1xo5
From Proteopedia
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<StructureSection load='1xo5' size='340' side='right'caption='[[1xo5]], [[Resolution|resolution]] 1.99Å' scene=''> | <StructureSection load='1xo5' size='340' side='right'caption='[[1xo5]], [[Resolution|resolution]] 1.99Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[1xo5]] is a 2 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[1xo5]] is a 2 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=1XO5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1XO5 FirstGlance]. <br> |
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.99Å</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1xo5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xo5 OCA], [https://pdbe.org/1xo5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1xo5 RCSB], [https://www.ebi.ac.uk/pdbsum/1xo5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1xo5 ProSAT]</span></td></tr> |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [ | + | [https://www.uniprot.org/uniprot/CIB1_HUMAN CIB1_HUMAN] May convert the inactive conformation of integrin alpha-IIb/beta3 to an active form through binding to the integrin cytoplasmic domain. Induces cell migration and spreading mediated through integrin (possibly via focal adhesion complexes). Functions as a negative regulator of stress activated MAP kinase (MAPK) signaling pathways. May play a role in regulation of apoptosis. Interacts with and up-regulates PTK2/FAK1 activity. Down regulates inositol 1,4,5-trisphosphate receptor-dependent calcium signaling. Participates in endomitotic cell cycle, a form of mitosis in which both karyokinesis and cytokinesis are interrupted and is a hallmark of megakaryocyte differentiation.<ref>PMID:12714504</ref> <ref>PMID:12881299</ref> <ref>PMID:15685448</ref> <ref>PMID:18627437</ref> <ref>PMID:19805025</ref> <ref>PMID:21264284</ref> |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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</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=1xo5 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=1xo5 ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | CIB1 (CIB) is an EF-hand-containing protein that binds multiple effector proteins, including the platelet alphaIIbbeta3 integrin and several serine/threonine kinases and potentially modulates their function. The crystal structure for Ca(2+)-bound CIB1 has been determined at 2.0 A resolution and reveals a compact alpha-helical protein containing four EF-hands, the last two of which bind calcium ions in the standard fashion seen in many other EF-hand proteins. CIB1 shares high structural similarity with calcineurin B and the neuronal calcium sensor (NCS) family of EF-hand-containing proteins. Most importantly, like calcineurin B and NCS proteins, which possess a large hydrophobic pocket necessary for ligand binding, CIB1 contains a hydrophobic pocket that has been implicated in ligand binding by previous mutational analysis. However, unlike several NCS proteins, Ca(2+)-bound CIB1 is largely monomeric whether bound to a relevant peptide ligand or ligand-free. Differences in structure, oligomeric state, and phylogeny define a new family of CIB1-related proteins that extends from arthropods to humans. | ||
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| - | Structural and biochemical characterization of CIB1 delineates a new family of EF-hand-containing proteins.,Gentry HR, Singer AU, Betts L, Yang C, Ferrara JD, Sondek J, Parise LV J Biol Chem. 2005 Mar 4;280(9):8407-15. Epub 2004 Dec 1. PMID:15574431<ref>PMID:15574431</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 1xo5" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Homo sapiens]] |
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Betts | + | [[Category: Betts L]] |
| - | [[Category: Ferrara | + | [[Category: Ferrara JD]] |
| - | [[Category: Gentry | + | [[Category: Gentry HR]] |
| - | [[Category: Parise | + | [[Category: Parise LV]] |
| - | [[Category: Singer | + | [[Category: Singer AU]] |
| - | [[Category: Sondek | + | [[Category: Sondek J]] |
| - | [[Category: Yang | + | [[Category: Yang C]] |
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Current revision
Crystal structure of CIB1, an EF-hand, integrin and kinase-binding protein
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Categories: Homo sapiens | Large Structures | Betts L | Ferrara JD | Gentry HR | Parise LV | Singer AU | Sondek J | Yang C
