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1avh

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Revision as of 11:12, 22 November 2017

CRYSTAL AND MOLECULAR STRUCTURE OF HUMAN ANNEXIN V AFTER REFINEMENT. IMPLICATIONS FOR STRUCTURE, MEMBRANE BINDING AND ION CHANNEL FORMATION OF THE ANNEXIN FAMILY OF PROTEINS

Structural highlights

1avh is a 2 chain structure with sequence from Human. 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

Disease

[ANXA5_HUMAN] Defects in ANXA5 are associated with susceptibility to pregnancy loss, recurrent, type 3 (RPRGL3) [MIM:614391]. A common complication of pregnancy, resulting in spontaneous abortion before the fetus has reached viability. The term includes all miscarriages from the time of conception until 24 weeks of gestation. Recurrent pregnancy loss is defined as 3 or more consecutive spontaneous abortions.^[1]

Function

[ANXA5_HUMAN] 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

Two crystal forms (P6(3) and R3) of human annexin V have been crystallographically refined at 2.3 A and 2.0 A resolution to R-values of 0.184 and 0.174, respectively, applying very tight stereochemical restraints with deviations from ideal geometry of 0.01 A and 2 degrees. The three independent molecules (2 in P6(3), 1 in R3) are similar, with deviations in C alpha positions of 0.6 A. The polypeptide chain of 320 amino acid residues is folded into a planar cyclic arrangement of four repeats. The repeats have similar structures of five alpha-helical segments wound into a right-handed compact superhelix. Three calcium ion sites in repeats I, II and IV and two lanthanum ion sites in repeat I have been found in the R3 crystals. They are located at the convex face of the molecule opposite the N terminus. Repeat III has a different conformation at this site and no calcium bound. The calcium sites are similar to the phospholipase A2 calcium-binding site, suggesting analogy also in phospholipid interaction. The center of the molecule is formed by a channel of polar charged residues, which also harbors a chain of ordered water molecules conserved in the different crystal forms. Comparison with amino acid sequences of other annexins shows a high degree of similarity between them. Long insertions are found only at the N termini. Most conserved are the residues forming the metal-binding sites and the polar channel. Annexins V and VII form voltage-gated calcium ion channels when bound to membranes in vitro. We suggest that annexins bind with their convex face to membranes, causing local disorder and permeability of the phospholipid bilayers. Annexins are Janus-faced proteins that face phospholipid and water and mediate calcium transport.

Crystal and molecular structure of human annexin V after refinement. Implications for structure, membrane binding and ion channel formation of the annexin family of proteins.,Huber R, Berendes R, Burger A, Schneider M, Karshikov A, Luecke H, Romisch J, Paques E J Mol Biol. 1992 Feb 5;223(3):683-704. PMID:1311770^[2]

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

References

↑ Bogdanova N, Horst J, Chlystun M, Croucher PJ, Nebel A, Bohring A, Todorova A, Schreiber S, Gerke V, Krawczak M, Markoff A. A common haplotype of the annexin A5 (ANXA5) gene promoter is associated with recurrent pregnancy loss. Hum Mol Genet. 2007 Mar 1;16(5):573-8. Epub 2007 Mar 5. PMID:17339269 doi:10.1093/hmg/ddm017
↑ Huber R, Berendes R, Burger A, Schneider M, Karshikov A, Luecke H, Romisch J, Paques E. Crystal and molecular structure of human annexin V after refinement. Implications for structure, membrane binding and ion channel formation of the annexin family of proteins. J Mol Biol. 1992 Feb 5;223(3):683-704. PMID:1311770

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==CRYSTAL AND MOLECULAR STRUCTURE OF HUMAN ANNEXIN V AFTER REFINEMENT. IMPLICATIONS FOR STRUCTURE, MEMBRANE BINDING AND ION CHANNEL FORMATION OF THE ANNEXIN FAMILY OF PROTEINS==
 <StructureSection load='1avh' size='340' side='right' caption='[[1avh]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1avh]] 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=1AVH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1AVH 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=SO4:SULFATE+ION'>SO4</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=1avh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1avh OCA], [http://pdbe.org/1avh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1avh RCSB], [http://www.ebi.ac.uk/pdbsum/1avh 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=1avh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1avh OCA], [http://pdbe.org/1avh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1avh RCSB], [http://www.ebi.ac.uk/pdbsum/1avh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1avh ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 29: / Line 30: @@
 </div>
 <div class="pdbe-citations 1avh" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Annexin|Annexin]]
 == References ==
 <references/>

1avh

From Proteopedia

Revision as of 11:12, 22 November 2017

CRYSTAL AND MOLECULAR STRUCTURE OF HUMAN ANNEXIN V AFTER REFINEMENT. IMPLICATIONS FOR STRUCTURE, MEMBRANE BINDING AND ION CHANNEL FORMATION OF THE ANNEXIN FAMILY OF PROTEINS

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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