3bqp - Revision history

OCA at 08:22, 19 January 2022

2022-01-19T08:22:32Z

←Older revision		Revision as of 08:22, 19 January 2022
Line 1:		Line 1:

	==Crystal Structure of Human Saposin D (orthorhombic)==		==Crystal Structure of Human Saposin D (orthorhombic)==
-	<StructureSection load='3bqp' size='340' side='right' caption='[[3bqp]], [[Resolution\|resolution]] 1.30Å' scene=''>	+	<StructureSection load='3bqp' size='340' side='right'caption='[[3bqp]], [[Resolution\|resolution]] 1.30Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[3bqp]] is a 2 chain structure with sequence from [~~http~~://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=3BQP FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[3bqp]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BQP FirstGlance]. <br>
-	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
-	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[3bqq\|3bqq]]</td></tr>	+	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3bqq\|3bqq]]</div></td></tr>
-	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PSAP; ([~~http~~://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>	+	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PSAP; ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3bqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bqp OCA], [~~http~~://pdbe.org/3bqp PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=3bqp RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/3bqp PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=3bqp 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=3bqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bqp OCA], [https://pdbe.org/3bqp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3bqp RCSB], [https://www.ebi.ac.uk/pdbsum/3bqp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3bqp ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
-	[[~~http~~://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] Defects in PSAP are the cause of combined saposin deficiency (CSAPD) [MIM:[~~http~~://omim.org/entry/611721 611721]]; also known as prosaposin deficiency. CSAPD is due to absence of all saposins, leading to a fatal storage disorder with hepatosplenomegaly and severe neurological involvement.<ref>PMID:1371116</ref> <ref>PMID:11309366</ref> Defects in PSAP saposin-B region are the cause of leukodystrophy metachromatic due to saposin-B deficiency (MLD-SAPB) [MIM:[~~http~~://omim.org/entry/249900 249900]]. MLD-SAPB is an atypical form of metachromatic leukodystrophy. It is characterized by tissue accumulation of cerebroside-3-sulfate, demyelination, periventricular white matter abnormalities, peripheral neuropathy. Additional neurological features include dysarthria, ataxic gait, psychomotr regression, seizures, cognitive decline and spastic quadriparesis. Defects in PSAP saposin-C region are the cause of atypical Gaucher disease (AGD) [MIM:[~~http~~://omim.org/entry/610539 610539]]. Affected individuals have marked glucosylceramide accumulation in the spleen without having a deficiency of glucosylceramide-beta glucosidase characteristic of classic Gaucher disease, a lysosomal storage disorder.<ref>PMID:2060627</ref> <ref>PMID:17919309</ref> Defects in PSAP saposin-A region are the cause of atypical Krabbe disease (AKRD) [MIM:[~~http~~://omim.org/entry/611722 611722]]. AKRD is a disorder of galactosylceramide metabolism. AKRD features include progressive encephalopathy and abnormal myelination in the cerebral white matter resembling Krabbe disease.<ref>PMID:15773042</ref> Note=Defects in PSAP saposin-D region are found in a variant of Tay-Sachs disease (GM2-gangliosidosis).	+	[[https://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] Defects in PSAP are the cause of combined saposin deficiency (CSAPD) [MIM:[https://omim.org/entry/611721 611721]]; also known as prosaposin deficiency. CSAPD is due to absence of all saposins, leading to a fatal storage disorder with hepatosplenomegaly and severe neurological involvement.<ref>PMID:1371116</ref> <ref>PMID:11309366</ref> Defects in PSAP saposin-B region are the cause of leukodystrophy metachromatic due to saposin-B deficiency (MLD-SAPB) [MIM:[https://omim.org/entry/249900 249900]]. MLD-SAPB is an atypical form of metachromatic leukodystrophy. It is characterized by tissue accumulation of cerebroside-3-sulfate, demyelination, periventricular white matter abnormalities, peripheral neuropathy. Additional neurological features include dysarthria, ataxic gait, psychomotr regression, seizures, cognitive decline and spastic quadriparesis. Defects in PSAP saposin-C region are the cause of atypical Gaucher disease (AGD) [MIM:[https://omim.org/entry/610539 610539]]. Affected individuals have marked glucosylceramide accumulation in the spleen without having a deficiency of glucosylceramide-beta glucosidase characteristic of classic Gaucher disease, a lysosomal storage disorder.<ref>PMID:2060627</ref> <ref>PMID:17919309</ref> Defects in PSAP saposin-A region are the cause of atypical Krabbe disease (AKRD) [MIM:[https://omim.org/entry/611722 611722]]. AKRD is a disorder of galactosylceramide metabolism. AKRD features include progressive encephalopathy and abnormal myelination in the cerebral white matter resembling Krabbe disease.<ref>PMID:15773042</ref> Note=Defects in PSAP saposin-D region are found in a variant of Tay-Sachs disease (GM2-gangliosidosis).
	== Function ==		== Function ==
-	[[~~http~~://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] The lysosomal degradation of sphingolipids takes place by the sequential action of specific hydrolases. Some of these enzymes require specific low-molecular mass, non-enzymic proteins: the sphingolipids activator proteins (coproteins). Saposin-A and saposin-C stimulate the hydrolysis of glucosylceramide by beta-glucosylceramidase (EC 3.2.1.45) and galactosylceramide by beta-galactosylceramidase (EC 3.2.1.46). Saposin-C apparently acts by combining with the enzyme and acidic lipid to form an activated complex, rather than by solubilizing the substrate. Saposin-B stimulates the hydrolysis of galacto-cerebroside sulfate by arylsulfatase A (EC 3.1.6.8), GM1 gangliosides by beta-galactosidase (EC 3.2.1.23) and globotriaosylceramide by alpha-galactosidase A (EC 3.2.1.22). Saposin-B forms a solubilizing complex with the substrates of the sphingolipid hydrolases. Saposin-D is a specific sphingomyelin phosphodiesterase activator (EC 3.1.4.12).	+	[[https://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] The lysosomal degradation of sphingolipids takes place by the sequential action of specific hydrolases. Some of these enzymes require specific low-molecular mass, non-enzymic proteins: the sphingolipids activator proteins (coproteins). Saposin-A and saposin-C stimulate the hydrolysis of glucosylceramide by beta-glucosylceramidase (EC 3.2.1.45) and galactosylceramide by beta-galactosylceramidase (EC 3.2.1.46). Saposin-C apparently acts by combining with the enzyme and acidic lipid to form an activated complex, rather than by solubilizing the substrate. Saposin-B stimulates the hydrolysis of galacto-cerebroside sulfate by arylsulfatase A (EC 3.1.6.8), GM1 gangliosides by beta-galactosidase (EC 3.2.1.23) and globotriaosylceramide by alpha-galactosidase A (EC 3.2.1.22). Saposin-B forms a solubilizing complex with the substrates of the sphingolipid hydrolases. Saposin-D is a specific sphingomyelin phosphodiesterase activator (EC 3.1.4.12).
	== Evolutionary Conservation ==		== Evolutionary Conservation ==
	[[Image:Consurf_key_small.gif\|200px\|right]]		[[Image:Consurf_key_small.gif\|200px\|right]]
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	</StructureSection>		</StructureSection>
	[[Category: Human]]		[[Category: Human]]
		+	[[Category: Large Structures]]
	[[Category: Popovic, K]]		[[Category: Popovic, K]]
	[[Category: Prive, G G]]		[[Category: Prive, G G]]

OCA at 08:20, 31 October 2018

2018-10-31T08:20:17Z

←Older revision		Revision as of 08:20, 31 October 2018
Line 1:		Line 1:
		+
	==Crystal Structure of Human Saposin D (orthorhombic)==		==Crystal Structure of Human Saposin D (orthorhombic)==
	<StructureSection load='3bqp' size='340' side='right' caption='[[3bqp]], [[Resolution\|resolution]] 1.30Å' scene=''>		<StructureSection load='3bqp' size='340' side='right' caption='[[3bqp]], [[Resolution\|resolution]] 1.30Å' scene=''>
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	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[3bqq\|3bqq]]</td></tr>		<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[3bqq\|3bqq]]</td></tr>
	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PSAP; ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>		<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PSAP; ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3bqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bqp OCA], [http://pdbe.org/3bqp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3bqp RCSB], [http://www.ebi.ac.uk/pdbsum/3bqp 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=3bqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bqp OCA], [http://pdbe.org/3bqp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3bqp RCSB], [http://www.ebi.ac.uk/pdbsum/3bqp PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3bqp ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
Line 16:		Line 17:
	Check<jmol>		Check<jmol>
	<jmolCheckbox>		<jmolCheckbox>
-	<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bq/3bqp_consurf.spt"</scriptWhenChecked>	+	<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bq/3bqp_consurf.spt"</scriptWhenChecked>
	<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>		<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
	<text>to colour the structure by Evolutionary Conservation</text>		<text>to colour the structure by Evolutionary Conservation</text>

OCA at 05:03, 8 February 2016

2016-02-08T05:03:04Z

←Older revision		Revision as of 05:03, 8 February 2016
Line 2:		Line 2:
	<StructureSection load='3bqp' size='340' side='right' caption='[[3bqp]], [[Resolution\|resolution]] 1.30Å' scene=''>		<StructureSection load='3bqp' size='340' side='right' caption='[[3bqp]], [[Resolution\|resolution]] 1.30Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[3bqp]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Homo_sapiens Homo sapiens~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BQP FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[3bqp]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BQP FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[3bqq\|3bqq]]</td></tr>		<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[3bqq\|3bqq]]</td></tr>
-	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PSAP; ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 ~~Homo sapiens~~])</td></tr>	+	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PSAP; ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3bqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bqp OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3bqp RCSB], [http://www.ebi.ac.uk/pdbsum/3bqp 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=3bqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bqp OCA], [http://pdbe.org/3bqp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3bqp RCSB], [http://www.ebi.ac.uk/pdbsum/3bqp PDBsum]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
Line 20:		Line 20:
	<text>to colour the structure by Evolutionary Conservation</text>		<text>to colour the structure by Evolutionary Conservation</text>
	</jmolCheckbox>		</jmolCheckbox>
-	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/~~chain_selection~~.php?pdb_ID=~~2ata~~ ConSurf].	+	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3bqp ConSurf].
	<div style="clear:both"></div>		<div style="clear:both"></div>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
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	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 3bqp" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
Line 37:		Line 38:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
-	[[Category: ~~Homo sapiens~~]]	+	[[Category: Human]]
	[[Category: Popovic, K]]		[[Category: Popovic, K]]
	[[Category: Prive, G G]]		[[Category: Prive, G G]]

OCA at 09:47, 20 January 2015

2015-01-20T09:47:45Z

←Older revision		Revision as of 09:47, 20 January 2015
Line 38:		Line 38:
	</StructureSection>		</StructureSection>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
-	[[Category: Popovic, K.]]	+	[[Category: Popovic, K]]
-	[[Category: Prive, G G.]]	+	[[Category: Prive, G G]]
	[[Category: Acid ceramidase]]		[[Category: Acid ceramidase]]
	[[Category: Farber disease]]		[[Category: Farber disease]]

OCA at 06:53, 10 October 2014

2014-10-10T06:53:17Z

←Older revision		Revision as of 06:53, 10 October 2014
Line 1:		Line 1:
-	~~{{STRUCTURE_3bqp\| PDB=3bqp \| SCENE= }}~~	+	==Crystal Structure of Human Saposin D (orthorhombic)==
-	===Crystal Structure of Human Saposin D (orthorhombic)===	+	<StructureSection load='3bqp' size='340' side='right' caption='[[3bqp]], [[Resolution\|resolution]] 1.30Å' scene=''>
-	~~{{ABSTRACT_PUBMED_18453694}}~~	+	== Structural highlights ==
-		+	<table><tr><td colspan='2'>[[3bqp]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BQP FirstGlance]. <br>
-	==Disease==	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
		+	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[3bqq\|3bqq]]</td></tr>
		+	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">PSAP; ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=3bqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bqp OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3bqp RCSB], [http://www.ebi.ac.uk/pdbsum/3bqp PDBsum]</span></td></tr>
		+	</table>
		+	== Disease ==
	[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] Defects in PSAP are the cause of combined saposin deficiency (CSAPD) [MIM:[http://omim.org/entry/611721 611721]]; also known as prosaposin deficiency. CSAPD is due to absence of all saposins, leading to a fatal storage disorder with hepatosplenomegaly and severe neurological involvement.<ref>PMID:1371116</ref> <ref>PMID:11309366</ref> Defects in PSAP saposin-B region are the cause of leukodystrophy metachromatic due to saposin-B deficiency (MLD-SAPB) [MIM:[http://omim.org/entry/249900 249900]]. MLD-SAPB is an atypical form of metachromatic leukodystrophy. It is characterized by tissue accumulation of cerebroside-3-sulfate, demyelination, periventricular white matter abnormalities, peripheral neuropathy. Additional neurological features include dysarthria, ataxic gait, psychomotr regression, seizures, cognitive decline and spastic quadriparesis. Defects in PSAP saposin-C region are the cause of atypical Gaucher disease (AGD) [MIM:[http://omim.org/entry/610539 610539]]. Affected individuals have marked glucosylceramide accumulation in the spleen without having a deficiency of glucosylceramide-beta glucosidase characteristic of classic Gaucher disease, a lysosomal storage disorder.<ref>PMID:2060627</ref> <ref>PMID:17919309</ref> Defects in PSAP saposin-A region are the cause of atypical Krabbe disease (AKRD) [MIM:[http://omim.org/entry/611722 611722]]. AKRD is a disorder of galactosylceramide metabolism. AKRD features include progressive encephalopathy and abnormal myelination in the cerebral white matter resembling Krabbe disease.<ref>PMID:15773042</ref> Note=Defects in PSAP saposin-D region are found in a variant of Tay-Sachs disease (GM2-gangliosidosis).		[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] Defects in PSAP are the cause of combined saposin deficiency (CSAPD) [MIM:[http://omim.org/entry/611721 611721]]; also known as prosaposin deficiency. CSAPD is due to absence of all saposins, leading to a fatal storage disorder with hepatosplenomegaly and severe neurological involvement.<ref>PMID:1371116</ref> <ref>PMID:11309366</ref> Defects in PSAP saposin-B region are the cause of leukodystrophy metachromatic due to saposin-B deficiency (MLD-SAPB) [MIM:[http://omim.org/entry/249900 249900]]. MLD-SAPB is an atypical form of metachromatic leukodystrophy. It is characterized by tissue accumulation of cerebroside-3-sulfate, demyelination, periventricular white matter abnormalities, peripheral neuropathy. Additional neurological features include dysarthria, ataxic gait, psychomotr regression, seizures, cognitive decline and spastic quadriparesis. Defects in PSAP saposin-C region are the cause of atypical Gaucher disease (AGD) [MIM:[http://omim.org/entry/610539 610539]]. Affected individuals have marked glucosylceramide accumulation in the spleen without having a deficiency of glucosylceramide-beta glucosidase characteristic of classic Gaucher disease, a lysosomal storage disorder.<ref>PMID:2060627</ref> <ref>PMID:17919309</ref> Defects in PSAP saposin-A region are the cause of atypical Krabbe disease (AKRD) [MIM:[http://omim.org/entry/611722 611722]]. AKRD is a disorder of galactosylceramide metabolism. AKRD features include progressive encephalopathy and abnormal myelination in the cerebral white matter resembling Krabbe disease.<ref>PMID:15773042</ref> Note=Defects in PSAP saposin-D region are found in a variant of Tay-Sachs disease (GM2-gangliosidosis).
		+	== Function ==
		+	[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] The lysosomal degradation of sphingolipids takes place by the sequential action of specific hydrolases. Some of these enzymes require specific low-molecular mass, non-enzymic proteins: the sphingolipids activator proteins (coproteins). Saposin-A and saposin-C stimulate the hydrolysis of glucosylceramide by beta-glucosylceramidase (EC 3.2.1.45) and galactosylceramide by beta-galactosylceramidase (EC 3.2.1.46). Saposin-C apparently acts by combining with the enzyme and acidic lipid to form an activated complex, rather than by solubilizing the substrate. Saposin-B stimulates the hydrolysis of galacto-cerebroside sulfate by arylsulfatase A (EC 3.1.6.8), GM1 gangliosides by beta-galactosidase (EC 3.2.1.23) and globotriaosylceramide by alpha-galactosidase A (EC 3.2.1.22). Saposin-B forms a solubilizing complex with the substrates of the sphingolipid hydrolases. Saposin-D is a specific sphingomyelin phosphodiesterase activator (EC 3.1.4.12).
		+	== Evolutionary Conservation ==
		+	[[Image:Consurf_key_small.gif\|200px\|right]]
		+	Check<jmol>
		+	<jmolCheckbox>
		+	<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bq/3bqp_consurf.spt"</scriptWhenChecked>
		+	<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
		+	<text>to colour the structure by Evolutionary Conservation</text>
		+	</jmolCheckbox>
		+	</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary\|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
		+	<div style="clear:both"></div>
		+	<div style="background-color:#fffaf0;">
		+	== Publication Abstract from PubMed ==
		+	Saposin D is a sphingolipid activator protein required for the lysosomal breakdown of ceramide to a fatty acid and sphingosine by acid ceramidase. The crystal structure of saposin D has been determined in two different crystal forms, resulting in a total of six crystallographically independent views of this small 80-amino-acid protein. All of the structures are highly similar and reveal the monomeric form of the saposin fold previously seen in the crystal structures of saposins A and C. Saposin D is slightly more compact than the related saposins A and C owing to a slight repositioning of the 'stem' and 'hairpin' regions of the protein.

-	~~==Function==~~	+	Structures of the human ceramide activator protein saposin D.,Popovic K, Prive GG Acta Crystallogr D Biol Crystallogr. 2008 May;64(Pt 5):589-94. Epub 2008, Apr 19. PMID:18453694<ref>PMID:18453694</ref>
-	~~[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] The lysosomal degradation~~ of ~~sphingolipids takes place by the sequential action of specific hydrolases. Some of these enzymes require specific low-molecular mass, non-enzymic proteins:~~ the ~~sphingolipids~~ activator ~~proteins (coproteins). Saposin-A and~~ saposin~~-C stimulate the hydrolysis of glucosylceramide by beta-glucosylceramidase (EC 3~~.~~2.1.45) and galactosylceramide by beta-galactosylceramidase (EC 3.2.1.46). Saposin-C apparently acts by combining with the enzyme and acidic lipid to form an activated complex~~, ~~rather than by solubilizing the substrate. Saposin-B stimulates the hydrolysis of galacto-cerebroside sulfate by arylsulfatase A (EC 3.1.6.8)~~, ~~GM1 gangliosides by beta-galactosidase (EC 3~~.~~2.1.23) and globotriaosylceramide by alpha-galactosidase A~~ (~~EC 3.2.1.22~~)~~. Saposin~~-~~B forms a solubilizing complex with the substrates of the sphingolipid hydrolases~~. ~~Saposin-D is a specific sphingomyelin phosphodiesterase activator (EC 3.1.4.12)~~.	+

-	~~==About this Structure==~~	+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	~~[[3bqp]] is~~ a ~~2 chain structure with sequence from [http://en~~.~~wikipedia~~.~~org/wiki/Homo_sapiens Homo sapiens]~~. ~~Full crystallographic information is available from [http:~~/~~/oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA].~~	+	</div>

-	==~~Reference~~==	+	==See Also==
-	~~<ref group~~=~~"xtra">PMID:018453694</ref>~~<references ~~group="xtra"~~/><~~references~~/>	+	*[[Saposin\|Saposin]]
		+	== References ==
		+	<references/>
		+	__TOC__
		+	</StructureSection>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Popovic, K.]]		[[Category: Popovic, K.]]

OCA at 07:56, 30 June 2013

2013-06-30T07:56:55Z

←Older revision		Revision as of 07:56, 30 June 2013
Line 4:		Line 4:

	==Disease==		==Disease==
-	[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] Defects in PSAP are the cause of combined saposin deficiency (CSAPD) [MIM:[http://omim.org/entry/611721 611721]]; also known as prosaposin deficiency. CSAPD is due to absence of all saposins, leading to a fatal storage disorder with hepatosplenomegaly and severe neurological involvement.<ref>PMID:1371116</ref><ref>PMID:11309366</ref> Defects in PSAP saposin-B region are the cause of leukodystrophy metachromatic due to saposin-B deficiency (MLD-SAPB) [MIM:[http://omim.org/entry/249900 249900]]. MLD-SAPB is an atypical form of metachromatic leukodystrophy. It is characterized by tissue accumulation of cerebroside-3-sulfate, demyelination, periventricular white matter abnormalities, peripheral neuropathy. Additional neurological features include dysarthria, ataxic gait, psychomotr regression, seizures, cognitive decline and spastic quadriparesis. Defects in PSAP saposin-C region are the cause of atypical Gaucher disease (AGD) [MIM:[http://omim.org/entry/610539 610539]]. Affected individuals have marked glucosylceramide accumulation in the spleen without having a deficiency of glucosylceramide-beta glucosidase characteristic of classic Gaucher disease, a lysosomal storage disorder.<ref>PMID:2060627</ref><ref>PMID:17919309</ref> Defects in PSAP saposin-A region are the cause of atypical Krabbe disease (AKRD) [MIM:[http://omim.org/entry/611722 611722]]. AKRD is a disorder of galactosylceramide metabolism. AKRD features include progressive encephalopathy and abnormal myelination in the cerebral white matter resembling Krabbe disease.<ref>PMID:15773042</ref> Note=Defects in PSAP saposin-D region are found in a variant of Tay-Sachs disease (GM2-gangliosidosis).	+	[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] Defects in PSAP are the cause of combined saposin deficiency (CSAPD) [MIM:[http://omim.org/entry/611721 611721]]; also known as prosaposin deficiency. CSAPD is due to absence of all saposins, leading to a fatal storage disorder with hepatosplenomegaly and severe neurological involvement.<ref>PMID:1371116</ref> <ref>PMID:11309366</ref> Defects in PSAP saposin-B region are the cause of leukodystrophy metachromatic due to saposin-B deficiency (MLD-SAPB) [MIM:[http://omim.org/entry/249900 249900]]. MLD-SAPB is an atypical form of metachromatic leukodystrophy. It is characterized by tissue accumulation of cerebroside-3-sulfate, demyelination, periventricular white matter abnormalities, peripheral neuropathy. Additional neurological features include dysarthria, ataxic gait, psychomotr regression, seizures, cognitive decline and spastic quadriparesis. Defects in PSAP saposin-C region are the cause of atypical Gaucher disease (AGD) [MIM:[http://omim.org/entry/610539 610539]]. Affected individuals have marked glucosylceramide accumulation in the spleen without having a deficiency of glucosylceramide-beta glucosidase characteristic of classic Gaucher disease, a lysosomal storage disorder.<ref>PMID:2060627</ref> <ref>PMID:17919309</ref> Defects in PSAP saposin-A region are the cause of atypical Krabbe disease (AKRD) [MIM:[http://omim.org/entry/611722 611722]]. AKRD is a disorder of galactosylceramide metabolism. AKRD features include progressive encephalopathy and abnormal myelination in the cerebral white matter resembling Krabbe disease.<ref>PMID:15773042</ref> Note=Defects in PSAP saposin-D region are found in a variant of Tay-Sachs disease (GM2-gangliosidosis).

	==Function==		==Function==
Line 11:		Line 11:
	==About this Structure==		==About this Structure==
	[[3bqp]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA].		[[3bqp]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA].
-
-	==See Also==
-	*[[Saposin\|Saposin]]

	==Reference==		==Reference==

OCA at 05:08, 25 March 2013

2013-03-25T05:08:58Z

←Older revision		Revision as of 05:08, 25 March 2013
Line 1:		Line 1:
-	[[Image:3bqp.png\|left\|200px]]
-
	{{STRUCTURE_3bqp\| PDB=3bqp \| SCENE= }}		{{STRUCTURE_3bqp\| PDB=3bqp \| SCENE= }}
-
	===Crystal Structure of Human Saposin D (orthorhombic)===		===Crystal Structure of Human Saposin D (orthorhombic)===
		+	{{ABSTRACT_PUBMED_18453694}}

-	~~{{ABSTRACT_PUBMED_18453694}}~~	+	==Disease==
		+	[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] Defects in PSAP are the cause of combined saposin deficiency (CSAPD) [MIM:[http://omim.org/entry/611721 611721]]; also known as prosaposin deficiency. CSAPD is due to absence of all saposins, leading to a fatal storage disorder with hepatosplenomegaly and severe neurological involvement.<ref>PMID:1371116</ref><ref>PMID:11309366</ref> Defects in PSAP saposin-B region are the cause of leukodystrophy metachromatic due to saposin-B deficiency (MLD-SAPB) [MIM:[http://omim.org/entry/249900 249900]]. MLD-SAPB is an atypical form of metachromatic leukodystrophy. It is characterized by tissue accumulation of cerebroside-3-sulfate, demyelination, periventricular white matter abnormalities, peripheral neuropathy. Additional neurological features include dysarthria, ataxic gait, psychomotr regression, seizures, cognitive decline and spastic quadriparesis. Defects in PSAP saposin-C region are the cause of atypical Gaucher disease (AGD) [MIM:[http://omim.org/entry/610539 610539]]. Affected individuals have marked glucosylceramide accumulation in the spleen without having a deficiency of glucosylceramide-beta glucosidase characteristic of classic Gaucher disease, a lysosomal storage disorder.<ref>PMID:2060627</ref><ref>PMID:17919309</ref> Defects in PSAP saposin-A region are the cause of atypical Krabbe disease (AKRD) [MIM:[http://omim.org/entry/611722 611722]]. AKRD is a disorder of galactosylceramide metabolism. AKRD features include progressive encephalopathy and abnormal myelination in the cerebral white matter resembling Krabbe disease.<ref>PMID:15773042</ref> Note=Defects in PSAP saposin-D region are found in a variant of Tay-Sachs disease (GM2-gangliosidosis).
		+
		+	==Function==
		+	[[http://www.uniprot.org/uniprot/SAP_HUMAN SAP_HUMAN]] The lysosomal degradation of sphingolipids takes place by the sequential action of specific hydrolases. Some of these enzymes require specific low-molecular mass, non-enzymic proteins: the sphingolipids activator proteins (coproteins). Saposin-A and saposin-C stimulate the hydrolysis of glucosylceramide by beta-glucosylceramidase (EC 3.2.1.45) and galactosylceramide by beta-galactosylceramidase (EC 3.2.1.46). Saposin-C apparently acts by combining with the enzyme and acidic lipid to form an activated complex, rather than by solubilizing the substrate. Saposin-B stimulates the hydrolysis of galacto-cerebroside sulfate by arylsulfatase A (EC 3.1.6.8), GM1 gangliosides by beta-galactosidase (EC 3.2.1.23) and globotriaosylceramide by alpha-galactosidase A (EC 3.2.1.22). Saposin-B forms a solubilizing complex with the substrates of the sphingolipid hydrolases. Saposin-D is a specific sphingomyelin phosphodiesterase activator (EC 3.1.4.12).

	==About this Structure==		==About this Structure==
Line 14:		Line 16:

	==Reference==		==Reference==
-	<ref group="xtra">PMID:018453694</ref><references group="xtra"/>	+	<ref group="xtra">PMID:018453694</ref><references group="xtra"/><references/>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Popovic, K.]]		[[Category: Popovic, K.]]

OCA at 09:00, 20 October 2012

2012-10-20T09:00:30Z

←Older revision		Revision as of 09:00, 20 October 2012
Line 8:		Line 8:

	==About this Structure==		==About this Structure==
-	[[3bqp]] is a 2 chain structure ~~of [[Saposin]]~~ with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA].	+	[[3bqp]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA].

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

OCA: Protected "3bqp" [edit=sysop:move=sysop]

2012-07-25T21:29:17Z

Protected "3bqp" [edit=sysop:move=sysop]

←Older revision

Revision as of 21:29, 25 July 2012

OCA at 21:29, 25 July 2012

2012-07-25T21:29:15Z

←Older revision		Revision as of 21:29, 25 July 2012
Line 1:		Line 1:
-	{{Seed}}
	[[Image:3bqp.png\|left\|200px]]		[[Image:3bqp.png\|left\|200px]]

-	<!--
-	The line below this paragraph, containing "STRUCTURE_3bqp", creates the "Structure Box" on the page.
-	You may change the PDB parameter (which sets the PDB file loaded into the applet)
-	or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
-	or leave the SCENE parameter empty for the default display.
-	-->
	{{STRUCTURE_3bqp\| PDB=3bqp \| SCENE= }}		{{STRUCTURE_3bqp\| PDB=3bqp \| SCENE= }}

	===Crystal Structure of Human Saposin D (orthorhombic)===		===Crystal Structure of Human Saposin D (orthorhombic)===

-
-	<!--
-	The line below this paragraph, {{ABSTRACT_PUBMED_18453694}}, adds the Publication Abstract to the page
-	(as it appears on PubMed at http://www.pubmed.gov), where 18453694 is the PubMed ID number.
-	-->
	{{ABSTRACT_PUBMED_18453694}}		{{ABSTRACT_PUBMED_18453694}}

	==About this Structure==		==About this Structure==
-	~~3BQP~~ is a 2 ~~chains~~ structure of ~~sequences~~ from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA].	+	[[3bqp]] is a 2 chain structure of [[Saposin]] with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BQP OCA].
		+
		+	==See Also==
		+	*[[Saposin\|Saposin]]

	==Reference==		==Reference==
-	<ref group="xtra">PMID:~~18453694~~</ref><references group="xtra"/>	+	<ref group="xtra">PMID:018453694</ref><references group="xtra"/>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Popovic, K.]]		[[Category: Popovic, K.]]
Line 35:		Line 26:
	[[Category: Sphingolipid activator protein]]		[[Category: Sphingolipid activator protein]]
	[[Category: Sphingolipid metabolism]]		[[Category: Sphingolipid metabolism]]
-
-	''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Feb 16 19:00:23 2009''