2mpz

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Current revision (07:01, 1 May 2024) (edit) (undo)
 
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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2mpz]] is a 27 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=2MPZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2MPZ FirstGlance]. <br>
<table><tr><td colspan='2'>[[2mpz]] is a 27 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=2MPZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2MPZ FirstGlance]. <br>
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</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=2mpz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mpz OCA], [https://pdbe.org/2mpz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2mpz RCSB], [https://www.ebi.ac.uk/pdbsum/2mpz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2mpz ProSAT]</span></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solid-state NMR</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2mpz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mpz OCA], [https://pdbe.org/2mpz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2mpz RCSB], [https://www.ebi.ac.uk/pdbsum/2mpz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2mpz ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
== Disease ==
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== 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>
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== Publication Abstract from PubMed ==
 
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Determining the structures of amyloid fibrils is an important first step toward understanding the molecular basis of neurodegenerative diseases. For beta-amyloid (Abeta) fibrils, conventional solid-state NMR structure determination using uniform labeling is limited by extensive peak overlap. We describe the characterization of a distinct structural polymorph of Abeta using solid-state NMR, transmission electron microscopy (TEM), and Rosetta model building. First, the overall fibril arrangement is established using mass-per-length measurements from TEM. Then, the fibril backbone arrangement, stacking registry, and "steric zipper" core interactions are determined using a number of solid-state NMR techniques on sparsely (13)C-labeled samples. Finally, we perform Rosetta structure calculations with an explicitly symmetric representation of the system. We demonstrate the power of the hybrid Rosetta/NMR approach by modeling the in-register, parallel "Iowa" mutant (D23N) at high resolution (1.2A backbone rmsd). The final models are validated using an independent set of NMR experiments that confirm key features.
 
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Modeling an in-register, parallel "iowa" abeta fibril structure using solid-state NMR data from labeled samples with rosetta.,Sgourakis NG, Yau WM, Qiang W Structure. 2015 Jan 6;23(1):216-27. doi: 10.1016/j.str.2014.10.022. Epub 2014 Dec, 24. PMID:25543257<ref>PMID:25543257</ref>
 
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
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</div>
 
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<div class="pdbe-citations 2mpz" style="background-color:#fffaf0;"></div>
 
== References ==
== References ==
<references/>
<references/>

Current revision

Atomic model of the Abeta D23N "Iowa" mutant using solid-state NMR, EM and Rosetta modeling

PDB ID 2mpz

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