1qxc - Revision history

OCA at 09:19, 6 December 2023

OCA — Wed, 06 Dec 2023 09:19:49 GMT

←Older revision		Revision as of 09:19, 6 December 2023
Line 1:		Line 1:

	==NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture==		==NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture==
-	<StructureSection load='1qxc' size='340' side='right'caption='[[1qxc~~]], [[NMR_Ensembles_of_Models \| 19 NMR models~~]]' scene=''>	+	<StructureSection load='1qxc' size='340' side='right'caption='[[1qxc]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QXC FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QXC FirstGlance]. <br>
-	</td></tr><tr id='~~related~~'><td class="sblockLbl"><b>[[~~Related_structure~~\|~~Related~~:]]</b></td><td class="sblockDat"~~><div style~~=~~'overflow: auto; max-height: 3em;'>[[1iyt\|1iyt]]</div~~></td></tr>	+	</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models\|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [https://pdbe.org/1qxc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [https://www.ebi.ac.uk/pdbsum/1qxc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qxc ProSAT]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [https://pdbe.org/1qxc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [https://www.ebi.ac.uk/pdbsum/1qxc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qxc ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
-	[[https://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Defects in APP are the cause of Alzheimer disease type 1 (AD1) [MIM:[https://omim.org/entry/104300 104300]]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:8476439</ref> <ref>PMID:15201367</ref> <ref>PMID:1671712</ref> <ref>PMID:1908231</ref> <ref>PMID:1678058</ref> <ref>PMID:1944558</ref> <ref>PMID:1925564</ref> <ref>PMID:1415269</ref> <ref>PMID:1303239</ref> <ref>PMID:1302033</ref> <ref>PMID:1303275</ref> <ref>PMID:8267572</ref> <ref>PMID:8290042</ref> <ref>PMID:8577393</ref> <ref>PMID:9328472</ref> <ref>PMID:9754958</ref> <ref>PMID:10097173</ref> <ref>PMID:10631141</ref> <ref>PMID:10665499</ref> <ref>PMID:10867787</ref> <ref>PMID:11063718</ref> <ref>PMID:11311152</ref> <ref>PMID:11528419</ref> <ref>PMID:12034808</ref> <ref>PMID:15365148</ref> <ref>PMID:15668448</ref> Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[https://omim.org/entry/605714 605714]]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, recurrent strokes, cerebral ischemia, cerebral infarction, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, leukoencephalopathy, and occipital calcifications.<ref>PMID:10821838</ref> <ref>PMID:2111584</ref> <ref>PMID:11409420</ref> <ref>PMID:12654973</ref> <ref>PMID:16178030</ref>	+	[https://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN] Defects in APP are the cause of Alzheimer disease type 1 (AD1) [MIM:[https://omim.org/entry/104300 104300]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:8476439</ref> <ref>PMID:15201367</ref> <ref>PMID:1671712</ref> <ref>PMID:1908231</ref> <ref>PMID:1678058</ref> <ref>PMID:1944558</ref> <ref>PMID:1925564</ref> <ref>PMID:1415269</ref> <ref>PMID:1303239</ref> <ref>PMID:1302033</ref> <ref>PMID:1303275</ref> <ref>PMID:8267572</ref> <ref>PMID:8290042</ref> <ref>PMID:8577393</ref> <ref>PMID:9328472</ref> <ref>PMID:9754958</ref> <ref>PMID:10097173</ref> <ref>PMID:10631141</ref> <ref>PMID:10665499</ref> <ref>PMID:10867787</ref> <ref>PMID:11063718</ref> <ref>PMID:11311152</ref> <ref>PMID:11528419</ref> <ref>PMID:12034808</ref> <ref>PMID:15365148</ref> <ref>PMID:15668448</ref> Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[https://omim.org/entry/605714 605714]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, recurrent strokes, cerebral ischemia, cerebral infarction, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, leukoencephalopathy, and occipital calcifications.<ref>PMID:10821838</ref> <ref>PMID:2111584</ref> <ref>PMID:11409420</ref> <ref>PMID:12654973</ref> <ref>PMID:16178030</ref>
	== Function ==		== Function ==
-	[[https://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>	+	[https://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
	== Publication Abstract from PubMed ==		== Publication Abstract from PubMed ==
Line 27:		Line 27:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
		+	[[Category: Homo sapiens]]
	[[Category: Large Structures]]		[[Category: Large Structures]]
-	[[Category: Armenante~~, M R~~]]	+	[[Category: Armenante MR]]
-	[[Category: Guerrini, R]]	+	[[Category: D'Ursi AM]]
-	[[Category: Picone, D]]	+	[[Category: Guerrini R]]
-	[[Category: Salvadori, S]]	+	[[Category: Picone D]]
-	[[Category: Sorrentino, G]]	+	[[Category: Salvadori S]]
-	~~[[Category: Ursi, A M.D]]~~	+	[[Category: Sorrentino G]]
-	~~[[Category: Protein binding~~]]	+

OCA at 10:05, 15 September 2021

OCA — Wed, 15 Sep 2021 10:05:45 GMT

←Older revision		Revision as of 10:05, 15 September 2021
Line 3:		Line 3:
	<StructureSection load='1qxc' size='340' side='right'caption='[[1qxc]], [[NMR_Ensembles_of_Models \| 19 NMR models]]' scene=''>		<StructureSection load='1qxc' size='340' side='right'caption='[[1qxc]], [[NMR_Ensembles_of_Models \| 19 NMR models]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=1QXC FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QXC FirstGlance]. <br>
-	</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[1iyt\|1iyt]]</td></tr>	+	</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1iyt\|1iyt]]</div></td></tr>
-	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [~~http~~://pdbe.org/1qxc PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/1qxc PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=1qxc ProSAT]</span></td></tr>	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [https://pdbe.org/1qxc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [https://www.ebi.ac.uk/pdbsum/1qxc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qxc ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
-	[[~~http~~://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Defects in APP are the cause of Alzheimer disease type 1 (AD1) [MIM:[~~http~~://omim.org/entry/104300 104300]]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:8476439</ref> <ref>PMID:15201367</ref> <ref>PMID:1671712</ref> <ref>PMID:1908231</ref> <ref>PMID:1678058</ref> <ref>PMID:1944558</ref> <ref>PMID:1925564</ref> <ref>PMID:1415269</ref> <ref>PMID:1303239</ref> <ref>PMID:1302033</ref> <ref>PMID:1303275</ref> <ref>PMID:8267572</ref> <ref>PMID:8290042</ref> <ref>PMID:8577393</ref> <ref>PMID:9328472</ref> <ref>PMID:9754958</ref> <ref>PMID:10097173</ref> <ref>PMID:10631141</ref> <ref>PMID:10665499</ref> <ref>PMID:10867787</ref> <ref>PMID:11063718</ref> <ref>PMID:11311152</ref> <ref>PMID:11528419</ref> <ref>PMID:12034808</ref> <ref>PMID:15365148</ref> <ref>PMID:15668448</ref> Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[~~http~~://omim.org/entry/605714 605714]]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, recurrent strokes, cerebral ischemia, cerebral infarction, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, leukoencephalopathy, and occipital calcifications.<ref>PMID:10821838</ref> <ref>PMID:2111584</ref> <ref>PMID:11409420</ref> <ref>PMID:12654973</ref> <ref>PMID:16178030</ref>	+	[[https://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Defects in APP are the cause of Alzheimer disease type 1 (AD1) [MIM:[https://omim.org/entry/104300 104300]]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:8476439</ref> <ref>PMID:15201367</ref> <ref>PMID:1671712</ref> <ref>PMID:1908231</ref> <ref>PMID:1678058</ref> <ref>PMID:1944558</ref> <ref>PMID:1925564</ref> <ref>PMID:1415269</ref> <ref>PMID:1303239</ref> <ref>PMID:1302033</ref> <ref>PMID:1303275</ref> <ref>PMID:8267572</ref> <ref>PMID:8290042</ref> <ref>PMID:8577393</ref> <ref>PMID:9328472</ref> <ref>PMID:9754958</ref> <ref>PMID:10097173</ref> <ref>PMID:10631141</ref> <ref>PMID:10665499</ref> <ref>PMID:10867787</ref> <ref>PMID:11063718</ref> <ref>PMID:11311152</ref> <ref>PMID:11528419</ref> <ref>PMID:12034808</ref> <ref>PMID:15365148</ref> <ref>PMID:15668448</ref> Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[https://omim.org/entry/605714 605714]]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, recurrent strokes, cerebral ischemia, cerebral infarction, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, leukoencephalopathy, and occipital calcifications.<ref>PMID:10821838</ref> <ref>PMID:2111584</ref> <ref>PMID:11409420</ref> <ref>PMID:12654973</ref> <ref>PMID:16178030</ref>
	== Function ==		== Function ==
-	[[~~http~~://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>	+	[[https://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
	== Publication Abstract from PubMed ==		== Publication Abstract from PubMed ==

OCA at 11:43, 4 December 2019

OCA — Wed, 04 Dec 2019 11:43:20 GMT

←Older revision		Revision as of 11:43, 4 December 2019
Line 1:		Line 1:

	==NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture==		==NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture==
-	<StructureSection load='1qxc' size='340' side='right' caption='[[1qxc]], [[NMR_Ensembles_of_Models \| 19 NMR models]]' scene=''>	+	<StructureSection load='1qxc' size='340' side='right'caption='[[1qxc]], [[NMR_Ensembles_of_Models \| 19 NMR models]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXC FirstGlance]. <br>		<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXC FirstGlance]. <br>
Line 22:		Line 22:

	==See Also==		==See Also==
-	*[[Amyloid precursor protein\|Amyloid precursor protein]]	+	*[[Amyloid precursor protein 3D structures\|Amyloid precursor protein 3D structures]]
	== References ==		== References ==
	<references/>		<references/>
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
		+	[[Category: Large Structures]]
	[[Category: Armenante, M R]]		[[Category: Armenante, M R]]
	[[Category: Guerrini, R]]		[[Category: Guerrini, R]]

OCA at 08:07, 28 February 2018

OCA — Wed, 28 Feb 2018 08:07:46 GMT

←Older revision		Revision as of 08:07, 28 February 2018
Line 1:		Line 1:
		+
	==NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture==		==NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture==
	<StructureSection load='1qxc' size='340' side='right' caption='[[1qxc]], [[NMR_Ensembles_of_Models \| 19 NMR models]]' scene=''>		<StructureSection load='1qxc' size='340' side='right' caption='[[1qxc]], [[NMR_Ensembles_of_Models \| 19 NMR models]]' scene=''>
Line 4:		Line 5:
	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXC FirstGlance]. <br>		<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXC FirstGlance]. <br>
	</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[1iyt\|1iyt]]</td></tr>		</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[1iyt\|1iyt]]</td></tr>
-	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [http://pdbe.org/1qxc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [http://www.ebi.ac.uk/pdbsum/1qxc PDBsum]</span></td></tr>	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [http://pdbe.org/1qxc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [http://www.ebi.ac.uk/pdbsum/1qxc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1qxc ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==

OCA at 04:17, 11 September 2015

OCA — Fri, 11 Sep 2015 04:17:32 GMT

←Older revision		Revision as of 04:17, 11 September 2015
Line 4:		Line 4:
	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXC FirstGlance]. <br>		<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXC FirstGlance]. <br>
	</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[1iyt\|1iyt]]</td></tr>		</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[1iyt\|1iyt]]</td></tr>
-	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [http://www.ebi.ac.uk/pdbsum/1qxc PDBsum]</span></td></tr>	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [http://pdbe.org/1qxc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [http://www.ebi.ac.uk/pdbsum/1qxc PDBsum]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
Line 18:		Line 18:
	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
	</div>		</div>
		+	<div class="pdbe-citations 1qxc" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==

OCA at 12:42, 18 December 2014

OCA — Thu, 18 Dec 2014 12:42:28 GMT

←Older revision		Revision as of 12:42, 18 December 2014
Line 1:		Line 1:
-	~~{{STRUCTURE_1qxc\| PDB=1qxc \| SCENE= }}~~	+	==NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture==
-	===NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture===	+	<StructureSection load='1qxc' size='340' side='right' caption='[[1qxc]], [[NMR_Ensembles_of_Models \| 19 NMR models]]' scene=''>
-	~~{{ABSTRACT_PUBMED_15293994}}~~	+	== Structural highlights ==
		+	<table><tr><td colspan='2'>[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXC FirstGlance]. <br>
		+	</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[1iyt\|1iyt]]</td></tr>
		+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qxc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxc OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1qxc RCSB], [http://www.ebi.ac.uk/pdbsum/1qxc PDBsum]</span></td></tr>
		+	</table>
		+	== Disease ==
		+	[[http://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Defects in APP are the cause of Alzheimer disease type 1 (AD1) [MIM:[http://omim.org/entry/104300 104300]]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:8476439</ref> <ref>PMID:15201367</ref> <ref>PMID:1671712</ref> <ref>PMID:1908231</ref> <ref>PMID:1678058</ref> <ref>PMID:1944558</ref> <ref>PMID:1925564</ref> <ref>PMID:1415269</ref> <ref>PMID:1303239</ref> <ref>PMID:1302033</ref> <ref>PMID:1303275</ref> <ref>PMID:8267572</ref> <ref>PMID:8290042</ref> <ref>PMID:8577393</ref> <ref>PMID:9328472</ref> <ref>PMID:9754958</ref> <ref>PMID:10097173</ref> <ref>PMID:10631141</ref> <ref>PMID:10665499</ref> <ref>PMID:10867787</ref> <ref>PMID:11063718</ref> <ref>PMID:11311152</ref> <ref>PMID:11528419</ref> <ref>PMID:12034808</ref> <ref>PMID:15365148</ref> <ref>PMID:15668448</ref> Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[http://omim.org/entry/605714 605714]]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, recurrent strokes, cerebral ischemia, cerebral infarction, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, leukoencephalopathy, and occipital calcifications.<ref>PMID:10821838</ref> <ref>PMID:2111584</ref> <ref>PMID:11409420</ref> <ref>PMID:12654973</ref> <ref>PMID:16178030</ref>
		+	== Function ==
		+	[[http://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>
		+	<div style="background-color:#fffaf0;">
		+	== Publication Abstract from PubMed ==
		+	The design of molecules able to interact with the amyloid peptides either as inhibitors of fibril formation or as inhibitors of amyloid membrane pore formation represents one of the most relevant approaches in the development of anti-Alzheimer therapies. Abeta-(25-35), sequence GSNKGAIIGLM, is a highly toxic synthetic derivative of amyloid beta-peptides (Abeta-peptides), which forms fibrillary aggregates. Here, we report the NMR and CD investigation of Abeta-(25-35) in a membrane-mimicking environment and in isotropic mixtures of water and fluoro-alcohols to scan its conformational properties as a function of the medium. The analysis of the 3D structures in the mentioned conditions indicates a propensity of the peptide to behave as a typical transmembrane helix in the lipidic environment. In media characterized by different polarity, it loses the structural regularity at specific points of the sequence as a function of the environment. Furthermore, a comparison with the solution structure of full-length amyloid peptides suggests a role for the 25-27 kink region, which appears to be a general feature of all peptides under the solution conditions explored.

-	~~==Disease==~~	+	Solution structure of amyloid beta-peptide (25-35) in different media.,D'Ursi AM, Armenante MR, Guerrini R, Salvadori S, Sorrentino G, Picone D J Med Chem. 2004 Aug 12;47(17):4231-8. PMID:15293994<ref>PMID:15293994</ref>
-	~~[[http://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Defects in APP are the cause~~ of ~~Alzheimer disease type 1 (AD1) [MIM:[http://omim.org/entry/104300 104300]]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral~~ amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-~~APP 40-42~~ peptide (~~s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C~~-~~terminal fragments (CTFs~~) ~~and the caspase-cleaved products such as C31 derived from APP, are also implicated~~ in ~~neuronal death~~.<ref>PMID:8476439</ref><ref>PMID:15201367</ref><ref>PMID:1671712</ref><ref>PMID:1908231</ref><ref>PMID:1678058</ref><ref>PMID:1944558</ref><ref>PMID:1925564</ref><ref>PMID:1415269</ref><ref>PMID:1303239</ref><ref>PMID:1302033</ref><ref>PMID:1303275</ref><ref>PMID:8267572</ref><ref>PMID:8290042</ref><ref>PMID:8577393</ref><ref>PMID:9328472</ref><ref>PMID:9754958</ref><ref>PMID:10097173</ref><ref>PMID:10631141</ref><ref>PMID:10665499</ref><ref>PMID:10867787</ref><ref>PMID:11063718</ref><ref>PMID:11311152</ref><ref>PMID:11528419</ref><ref>PMID:12034808</ref><ref>PMID:15365148</ref><ref>PMID:15668448</ref> Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[http://omim.org/entry/605714 605714]]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, ~~recurrent strokes~~, ~~cerebral ischemia~~, ~~cerebral infarction~~, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, ~~leukoencephalopathy~~, ~~and occipital calcifications~~.~~<ref>PMID~~:~~10821838</ref><ref>~~PMID:~~2111584</ref><ref>PMID:11409420</ref><ref>PMID:12654973</ref>~~<ref>PMID:~~16178030~~</ref>	+

-	~~==Function==~~	+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	~~[[http:~~/~~/www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth~~, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the ~~extracellular matrix such as heparin and collagen I and IV~~. ~~The splice isoforms that contain the BPTI domain possess protease inhibitor activity~~. ~~Induces a AGER-dependent pathway that involves activation~~ of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<~~ref~~>~~PMID:9168929~~</~~ref~~><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref>	+	</div>
-		+
-	~~==About this Structure==~~	+
-	~~[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA].~~	+

	==See Also==		==See Also==
	*[[Amyloid precursor protein\|Amyloid precursor protein]]		*[[Amyloid precursor protein\|Amyloid precursor protein]]
-		+	== References ==
-	==~~Reference~~==	+	<references/>
-	~~<ref group="xtra">PMID:015293994</ref>~~<references ~~group="xtra"~~/><~~references~~/>	+	__TOC__
-	[[Category: Armenante, M R.]]	+	</StructureSection>
-	[[Category: Guerrini, R.]]	+	[[Category: Armenante, M R]]
-	[[Category: Picone, D.]]	+	[[Category: Guerrini, R]]
-	[[Category: Salvadori, S.]]	+	[[Category: Picone, D]]
-	[[Category: Sorrentino, G.]]	+	[[Category: Salvadori, S]]
-	[[Category: Ursi, A M.D.]]	+	[[Category: Sorrentino, G]]
		+	[[Category: Ursi, A M.D]]
	[[Category: Protein binding]]		[[Category: Protein binding]]

OCA at 22:27, 24 March 2013

OCA — Sun, 24 Mar 2013 22:27:45 GMT

←Older revision		Revision as of 22:27, 24 March 2013
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-	[[Image:1qxc.png\|left\|200px]]
-
	{{STRUCTURE_1qxc\| PDB=1qxc \| SCENE= }}		{{STRUCTURE_1qxc\| PDB=1qxc \| SCENE= }}
-
	===NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture===		===NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture===
		+	{{ABSTRACT_PUBMED_15293994}}

-	~~{{ABSTRACT_PUBMED_15293994}}~~	+	==Disease==
		+	[[http://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Defects in APP are the cause of Alzheimer disease type 1 (AD1) [MIM:[http://omim.org/entry/104300 104300]]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:8476439</ref><ref>PMID:15201367</ref><ref>PMID:1671712</ref><ref>PMID:1908231</ref><ref>PMID:1678058</ref><ref>PMID:1944558</ref><ref>PMID:1925564</ref><ref>PMID:1415269</ref><ref>PMID:1303239</ref><ref>PMID:1302033</ref><ref>PMID:1303275</ref><ref>PMID:8267572</ref><ref>PMID:8290042</ref><ref>PMID:8577393</ref><ref>PMID:9328472</ref><ref>PMID:9754958</ref><ref>PMID:10097173</ref><ref>PMID:10631141</ref><ref>PMID:10665499</ref><ref>PMID:10867787</ref><ref>PMID:11063718</ref><ref>PMID:11311152</ref><ref>PMID:11528419</ref><ref>PMID:12034808</ref><ref>PMID:15365148</ref><ref>PMID:15668448</ref> Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[http://omim.org/entry/605714 605714]]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, recurrent strokes, cerebral ischemia, cerebral infarction, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, leukoencephalopathy, and occipital calcifications.<ref>PMID:10821838</ref><ref>PMID:2111584</ref><ref>PMID:11409420</ref><ref>PMID:12654973</ref><ref>PMID:16178030</ref>
		+
		+	==Function==
		+	[[http://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref> N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref><ref>PMID:11544248</ref><ref>PMID:11943163</ref><ref>PMID:19225519</ref><ref>PMID:19901339</ref>

	==About this Structure==		==About this Structure==
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	==Reference==		==Reference==
-	<ref group="xtra">PMID:015293994</ref><references group="xtra"/>	+	<ref group="xtra">PMID:015293994</ref><references group="xtra"/><references/>
	[[Category: Armenante, M R.]]		[[Category: Armenante, M R.]]
	[[Category: Guerrini, R.]]		[[Category: Guerrini, R.]]

OCA at 15:56, 20 October 2012

OCA — Sat, 20 Oct 2012 15:56:19 GMT

←Older revision		Revision as of 15:56, 20 October 2012
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	==About this Structure==		==About this Structure==
-	[[1qxc]] is a 1 chain structure ~~of [[Amyloid precursor protein]]~~. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA].	+	[[1qxc]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA].

	==See Also==		==See Also==

OCA: Protected "1qxc" [edit=sysop:move=sysop]

OCA — Thu, 26 Jul 2012 19:58:51 GMT

Protected "1qxc" [edit=sysop:move=sysop]

←Older revision

Revision as of 19:58, 26 July 2012

OCA at 19:58, 26 July 2012

OCA — Thu, 26 Jul 2012 19:58:49 GMT

←Older revision		Revision as of 19:58, 26 July 2012
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-	{{Seed}}
	[[Image:1qxc.png\|left\|200px]]		[[Image:1qxc.png\|left\|200px]]

-	<!--
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	{{STRUCTURE_1qxc\| PDB=1qxc \| SCENE= }}		{{STRUCTURE_1qxc\| PDB=1qxc \| SCENE= }}

	===NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture===		===NMR structure of the fragment 25-35 of beta amyloid peptide in 20/80 v:v hexafluoroisopropanol/water mixture===

-
-	<!--
-	The line below this paragraph, {{ABSTRACT_PUBMED_15293994}}, adds the Publication Abstract to the page
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	{{ABSTRACT_PUBMED_15293994}}		{{ABSTRACT_PUBMED_15293994}}

	==About this Structure==		==About this Structure==
-	~~1QXC~~ is a [[~~Single~~ protein]] ~~structure~~. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA].	+	[[1qxc]] is a 1 chain structure of [[Amyloid precursor protein]]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXC OCA].
		+
		+	==See Also==
		+	*[[Amyloid precursor protein\|Amyloid precursor protein]]

	==Reference==		==Reference==
-	~~Solution structure of amyloid beta-peptide (25-35) in different media., D'Ursi AM, Armenante MR, Guerrini R, Salvadori S, Sorrentino G, Picone D, J Med Chem. 2004 Aug 12;47(17):4231-8.~~ PMID:~~[http:~~//~~www.ncbi.nlm.nih.gov/pubmed/15293994 15293994]~~	+	<ref group="xtra">PMID:015293994</ref><references group="xtra"/>
-	~~[[Category: Single protein]]~~	+
	[[Category: Armenante, M R.]]		[[Category: Armenante, M R.]]
	[[Category: Guerrini, R.]]		[[Category: Guerrini, R.]]
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	[[Category: Ursi, A M.D.]]		[[Category: Ursi, A M.D.]]
	[[Category: Protein binding]]		[[Category: Protein binding]]
-
-	''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 19:58:08 2008''