4qj5
From Proteopedia
(Difference between revisions)
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<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=4qj5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qj5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4qj5 RCSB], [http://www.ebi.ac.uk/pdbsum/4qj5 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=4qj5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qj5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4qj5 RCSB], [http://www.ebi.ac.uk/pdbsum/4qj5 PDBsum]</span></td></tr> | ||
</table> | </table> | ||
| + | == Function == | ||
| + | [[http://www.uniprot.org/uniprot/GNAQ_MOUSE GNAQ_MOUSE]] Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. Regulates B-cell selection and survival and is required to prevent B-cell-dependent autoimmunity. Regulates chemotaxis of BM-derived neutrophils and dendritic cells (in vitro).<ref>PMID:17938235</ref> <ref>PMID:20624888</ref> [[http://www.uniprot.org/uniprot/PLCB3_HUMAN PLCB3_HUMAN]] The production of the second messenger molecules diacylglycerol (DAG) and inositol 1,4,5-trisphosphate (IP3) is mediated by activated phosphatidylinositol-specific phospholipase C enzymes. | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Phospholipase C beta (PLCbeta) enzymes are dramatically activated by heterotrimeric G proteins. Central to this response is the robust autoinhibition of PLCbeta by the X-Y linker region within its catalytic core and by the Halpha2' helix in the C-terminal extension of the enzyme. The molecular mechanism of each and their mutual dependence are poorly understood. Herein, it is shown that distinct regions within the X-Y linker have specific roles in regulating activity. Most important, an acidic stretch within the linker stabilizes a lid that occludes the active site, consistent with crystal structures of variants lacking this region. Inhibition by the Halpha2' helix is independent of the X-Y linker and likely regulates activity by limiting membrane interaction of the catalytic core. Full activation of PLCbeta thus requires multiple independent molecular events induced by membrane association of the catalytic core and by the binding of regulatory proteins. | ||
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| + | Molecular Mechanisms of Phospholipase C beta3 Autoinhibition.,Lyon AM, Begley JA, Manett TD, Tesmer JJ Structure. 2014 Nov 25. pii: S0969-2126(14)00335-9. doi:, 10.1016/j.str.2014.10.008. PMID:25435326<ref>PMID:25435326</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Phosphoinositide phospholipase C]] | [[Category: Phosphoinositide phospholipase C]] | ||
| - | [[Category: Lyon, A M | + | [[Category: Lyon, A M]] |
| - | [[Category: Tesmer, J J.G | + | [[Category: Tesmer, J J.G]] |
[[Category: C2 domain]] | [[Category: C2 domain]] | ||
[[Category: Calcium binding]] | [[Category: Calcium binding]] | ||
Revision as of 10:51, 24 December 2014
Structure of a fragment of human phospholipase C-beta3 delta472-581, bound to IP3 and in complex with Galphaq
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Categories: Phosphoinositide phospholipase C | Lyon, A M | Tesmer, J J.G | C2 domain | Calcium binding | Ef hand | G-protein signaling | Gtp binding | Gtp hydrolysis | Gtp-binding protein alpha subunit | Lipase | Membrane | Ph domain | Phospholipase c beta | Phospholipid | Signaling protein-hydrolase complex | Tim barrel domain
