View source for 5lpx


==Crystal structure of PKC phosphorylation-mimicking mutant (S26E) Annexin A2==
<StructureSection load='5lpx' size='340' side='right'caption='[[5lpx]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5lpx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5LPX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5LPX FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></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=5lpx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5lpx OCA], [https://pdbe.org/5lpx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5lpx RCSB], [https://www.ebi.ac.uk/pdbsum/5lpx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5lpx ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ANXA2_HUMAN ANXA2_HUMAN] Calcium-regulated membrane-binding protein whose affinity for calcium is greatly enhanced by anionic phospholipids. It binds two calcium ions with high affinity. May be involved in heat-stress response.
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== Publication Abstract from PubMed ==
Annexin A2 (ANXA2) has a versatile role in membrane-associated functions including membrane aggregation, endo- and exocytosis, and it is regulated by post-translational modifications and protein-protein interactions through the unstructured N-terminal domain (NTD). Our sequence analysis revealed a short motif responsible for clamping the NTD to the C-terminal core domain (CTD). Structural studies indicated that the flexibility of the NTD and CTD are interrelated and oppositely regulated by Tyr24 phosphorylation and Ser26Glu phosphomimicking mutation. The crystal structure of the ANXA2-S100A4 complex showed that asymmetric binding of S100A4 induces dislocation of the NTD from the CTD and, similar to the Ser26Glu mutation, unmasks the concave side of ANXA2. In contrast, pTyr24 anchors the NTD to the CTD and hampers the membrane-bridging function. This inhibition can be restored by S100A4 and S100A10 binding. Based on our results we provide a structural model for regulation of ANXA2-mediated membrane aggregation by NTD phosphorylation and S100 binding.

Regulation of the Equilibrium between Closed and Open Conformations of Annexin A2 by N-Terminal Phosphorylation and S100A4-Binding.,Ecsedi P, Kiss B, Gogl G, Radnai L, Buday L, Koprivanacz K, Liliom K, Leveles I, Vertessy B, Jeszenoi N, Hetenyi C, Schlosser G, Katona G, Nyitray L Structure. 2017 Aug 1;25(8):1195-1207.e5. doi: 10.1016/j.str.2017.06.001. Epub, 2017 Jun 29. PMID:28669632<ref>PMID:28669632</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5lpx" style="background-color:#fffaf0;"></div>

==See Also==
*[[Annexin 3D structures|Annexin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Ecsedi P]]
[[Category: Gogl G]]
[[Category: Kiss B]]
[[Category: Nyitray L]]