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3kqr

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Revision as of 03:12, 5 August 2016

The structure of serum amyloid p component bound to phosphoethanolamine

Structural highlights

3kqr is a 5 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	1gyk, 1lgn, 1sac, 2a3w, 2a3x, 2a3y
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[SAMP_HUMAN] Note=SAP is a precursor of amyloid component P which is found in basement membrane and associated with amyloid deposits.

Function

[SAMP_HUMAN] Can interact with DNA and histones and may scavenge nuclear material released from damaged circulating cells. May also function as a calcium-dependent lectin.

Publication Abstract from PubMed

The normal physiological roles of the phylogenetically conserved human plasma proteins C-reactive protein (CRP) and serum amyloid P component (SAP) are not known. Novel drugs targeting their ligand specificities are in clinical development as both proteins have significant pathophysiological effects, SAP in promoting amyloidosis and CRP in exacerbating ischemic injury. Both proteins bind to phosphoethanolamine and we show here that, under physiological conditions, phosphoethanolamine is bound with higher affinity by human SAP than by human CRP. An explanation is provided by X-ray crystal structures that show SAP residue Tyr74 allowing additional hydrophobic protein-ligand interactions compared with the equivalent Thr76 of CRP. Docking simulations show many more low energy positions for phosphoethanolamine bound by CRP than by SAP and are consistent with the crystallographic and functional binding results. These fundamental observations on structure-activity relationships will aid the design of improved pentraxin targeting drugs. Copyright (c) 2011 John Wiley & Sons, Ltd.

Structural basis of ligand specificity in the human pentraxins, C-reactive protein and serum amyloid P component.,Mikolajek H, Kolstoe SE, Pye VE, Mangione P, Pepys MB, Wood SP J Mol Recognit. 2011 Mar;24(2):371-7. doi: 10.1002/jmr.1090. PMID:21360619^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Mikolajek H, Kolstoe SE, Pye VE, Mangione P, Pepys MB, Wood SP. Structural basis of ligand specificity in the human pentraxins, C-reactive protein and serum amyloid P component. J Mol Recognit. 2011 Mar;24(2):371-7. doi: 10.1002/jmr.1090. PMID:21360619 doi:10.1002/jmr.1090

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3kqr"

@@ Line 1: / Line 1: @@
 ==The structure of serum amyloid p component bound to phosphoethanolamine==
 <StructureSection load='3kqr' size='340' side='right' caption='[[3kqr]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=OPE:PHOSPHORIC+ACID+MONO-(2-AMINO-ETHYL)+ESTER'>OPE</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1gyk|1gyk]], [[1lgn|1lgn]], [[1sac|1sac]], [[2a3w|2a3w]], [[2a3x|2a3x]], [[2a3y|2a3y]]</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=3kqr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kqr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3kqr RCSB], [http://www.ebi.ac.uk/pdbsum/3kqr 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=3kqr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kqr OCA], [http://pdbe.org/3kqr PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kqr RCSB], [http://www.ebi.ac.uk/pdbsum/3kqr PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3kqr ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 19: / Line 20: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3kqr" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

3kqr

From Proteopedia

Revision as of 03:12, 5 August 2016

The structure of serum amyloid p component bound to phosphoethanolamine

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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