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1g5n

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Revision as of 10:48, 13 September 2017

ANNEXIN V COMPLEX WITH HEPARIN OLIGOSACCHARIDES

Structural highlights

1g5n is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ANXA5_RAT] This protein is an anticoagulant protein that acts as an indirect inhibitor of the thromboplastin-specific complex, which is involved in the blood coagulation cascade.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

BACKGROUND: Annexin V, an abundant anticoagulant protein, has been proposed to exert its effects by self-assembling into highly ordered arrays on phospholipid membranes to form a protective anti-thrombotic shield at the cell surface. The protein exhibits very high-affinity calcium-dependent interactions with acidic phospholipid membranes, as well as specific binding to glycosaminoglycans (GAGs) such as heparin and heparan sulfate, a major component of cell surface proteoglycans. At present, there is no structural information to elucidate this interaction or the role it may play in annexin V function at the cell surface. RESULTS: We report the 1.9 A crystal structure of annexin V in complex with heparin-derived tetrasaccharides. This structure represents the first of a heparin oligosaccharide binding to a protein where calcium ions are essential for the interaction. Two distinct GAG binding sites are situated on opposite protein surfaces. Basic residues at each site were identified from the structure and site-directed mutants were prepared. The heparin binding properties of these mutants were measured by surface plasmon resonance. The results confirm the roles of these mutated residues in heparin binding, and the kinetic and thermodynamic data define the functionally distinct character of each distal binding surface. CONCLUSION: The annexin V molecule, as it self-assembles into an organized array on the membrane surface, can bind the heparan sulfate components of cell surface proteoglycans. A novel model is presented in which proteoglycan heparan sulfate could assist in the localization of annexin V to the cell surface membrane and/or stabilization of the entire molecular assembly to promote anticoagulation.

Annexin V--heparin oligosaccharide complex suggests heparan sulfate--mediated assembly on cell surfaces.,Capila I, Hernaiz MJ, Mo YD, Mealy TR, Campos B, Dedman JR, Linhardt RJ, Seaton BA Structure. 2001 Jan 10;9(1):57-64. PMID:11342135^[1]

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

References

↑ Capila I, Hernaiz MJ, Mo YD, Mealy TR, Campos B, Dedman JR, Linhardt RJ, Seaton BA. Annexin V--heparin oligosaccharide complex suggests heparan sulfate--mediated assembly on cell surfaces. Structure. 2001 Jan 10;9(1):57-64. PMID:11342135

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1g5n"

@@ Line 1: / Line 1: @@
 ==ANNEXIN V COMPLEX WITH HEPARIN OLIGOSACCHARIDES==
 <StructureSection load='1g5n' size='340' side='right' caption='[[1g5n]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1g5n]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G5N OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1G5N FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1g5n]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G5N OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1G5N FirstGlance]. <br>
-</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=IDS:2-O-SULFO-ALPHA-L-IDOPYRANURONIC+ACID'>IDS</scene>, <scene name='pdbligand=SGN:N,O6-DISULFO-GLUCOSAMINE'>SGN</scene></td></tr>
+</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=IDS:2-O-SULFO-ALPHA-L-IDOPYRANURONIC+ACID'>IDS</scene>, <scene name='pdbligand=SGN:N,O6-DISULFO-GLUCOSAMINE'>SGN</scene>, <scene name='pdbligand=UAP:4-DEOXY-2-O-SULFO-ALPHA-L-THREO-HEX-4-ENOPYRANURONIC+ACID'>UAP</scene></td></tr>
-<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UAP:4-DEOXY-2-O-SULFO-ALPHA-L-THREO-HEX-4-ENOPYRANURONIC+ACID'>UAP</scene></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=1g5n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g5n OCA], [http://pdbe.org/1g5n PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1g5n RCSB], [http://www.ebi.ac.uk/pdbsum/1g5n PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1g5n ProSAT]</span></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LC5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat])</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=1g5n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g5n OCA], [http://pdbe.org/1g5n PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1g5n RCSB], [http://www.ebi.ac.uk/pdbsum/1g5n PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 17: @@
     <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].
+</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=1g5n ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">
@@ Line 36: / Line 35: @@
 __TOC__
 </StructureSection>
-[[Category: Buffalo rat]]
 [[Category: Campos, B]]
 [[Category: Capila, I]]

1g5n

From Proteopedia

Revision as of 10:48, 13 September 2017

ANNEXIN V COMPLEX WITH HEPARIN OLIGOSACCHARIDES

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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