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| | <StructureSection load='4usl' size='340' side='right'caption='[[4usl]], [[Resolution|resolution]] 1.65Å' scene=''> | | <StructureSection load='4usl' size='340' side='right'caption='[[4usl]], [[Resolution|resolution]] 1.65Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4usl]] 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=4USL OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4USL FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4usl]] 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=4USL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4USL 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=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</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=4usl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4usl OCA], [http://pdbe.org/4usl PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4usl RCSB], [http://www.ebi.ac.uk/pdbsum/4usl PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4usl ProSAT]</span></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=4usl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4usl OCA], [https://pdbe.org/4usl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4usl RCSB], [https://www.ebi.ac.uk/pdbsum/4usl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4usl ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/SORCN_HUMAN SORCN_HUMAN]] Calcium-binding protein that modulates excitation-contraction coupling in the heart. Contributes to calcium homeostasis in the heart sarcoplasmic reticulum. Modulates the activity of RYR2 calcium channels.<ref>PMID:17699613</ref> | + | [https://www.uniprot.org/uniprot/SORCN_HUMAN SORCN_HUMAN] Calcium-binding protein that modulates excitation-contraction coupling in the heart. Contributes to calcium homeostasis in the heart sarcoplasmic reticulum. Modulates the activity of RYR2 calcium channels.<ref>PMID:17699613</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Colotti, G]] | + | [[Category: Colotti G]] |
| - | [[Category: Fiorillo, A]] | + | [[Category: Fiorillo A]] |
| - | [[Category: Ilari, A]] | + | [[Category: Ilari A]] |
| - | [[Category: Endoplasmic reticulum stress]]
| + | |
| - | [[Category: Metal binding protein]]
| + | |
| - | [[Category: Penta ef-hands calcium binding protein]]
| + | |
| Structural highlights
Function
SORCN_HUMAN Calcium-binding protein that modulates excitation-contraction coupling in the heart. Contributes to calcium homeostasis in the heart sarcoplasmic reticulum. Modulates the activity of RYR2 calcium channels.[1]
Publication Abstract from PubMed
Sorcin is an essential penta-EF hand calcium binding protein, able to confer the multi-drug resistance phenotype to drug-sensitive cancer cells and to reduce Endoplasmic Reticulum stress and cell death. Sorcin silencing blocks cell cycle progression in mitosis and induces cell death by triggering apoptosis. Sorcin participates in the modulation of calcium homeostasis and in calcium-dependent cell signalling in normal and cancer cells. The molecular basis of Sorcin action is yet unknown. The X-ray structures of Sorcin in the apo (apoSor) and in calcium bound form (CaSor) reveal the structural basis of Sorcin action: calcium binding to the EF1-3 hands promotes a large conformational change, involving a movement of the long D-helix joining the EF1-EF2 sub-domain to EF3 and the opening of EF1. This movement promotes the exposure of a hydrophobic pocket, which can accommodate in CaSor the portion of its N-terminal domain displaying the consensus binding motif identified by phage display experiments. This domain inhibits the interaction of sorcin with PDCD6, a protein that carries the Sorcin consensus motif, co-localizes with Sorcin in the perinuclear region of the cell and in the midbody and is involved in the onset of apoptosis.
Structural basis of Sorcin-mediated calcium-dependent signal transduction.,Ilari A, Fiorillo A, Poser E, Lalioti VS, Sundell GN, Ivarsson Y, Genovese I, Colotti G Sci Rep. 2015 Nov 18;5:16828. doi: 10.1038/srep16828. PMID:26577048[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Franceschini S, Ilari A, Verzili D, Zamparelli C, Antaramian A, Rueda A, Valdivia HH, Chiancone E, Colotti G. Molecular basis for the impaired function of the natural F112L sorcin mutant: X-ray crystal structure, calcium affinity, and interaction with annexin VII and the ryanodine receptor. FASEB J. 2008 Jan;22(1):295-306. Epub 2007 Aug 15. PMID:17699613 doi:10.1096/fj.07-8988com
- ↑ Ilari A, Fiorillo A, Poser E, Lalioti VS, Sundell GN, Ivarsson Y, Genovese I, Colotti G. Structural basis of Sorcin-mediated calcium-dependent signal transduction. Sci Rep. 2015 Nov 18;5:16828. doi: 10.1038/srep16828. PMID:26577048 doi:http://dx.doi.org/10.1038/srep16828
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