This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
3rk3
From Proteopedia
(Difference between revisions)
| Line 1: | Line 1: | ||
| - | [[ | + | ==Truncated SNARE complex with complexin== |
| + | <StructureSection load='3rk3' size='340' side='right' caption='[[3rk3]], [[Resolution|resolution]] 3.50Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3rk3]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RK3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3RK3 FirstGlance]. <br> | ||
| + | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3rk2|3rk2]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">VAMP2, SYB2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), Stx1a, Sap ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Rattus norvegicus]), SNAP25, SNAP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), CPLX1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=3rk3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3rk3 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3rk3 RCSB], [http://www.ebi.ac.uk/pdbsum/3rk3 PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Complexin prevents SNAREs from releasing neurotransmitters until an action potential arrives at the synapse. To understand the mechanism for this inhibition, we determined the structure of complexin bound to a mimetic of a prefusion SNAREpin lacking the portion of the v-SNARE that zippers last to trigger fusion. The 'central helix' of complexin is anchored to one SNARE complex, while its 'accessory helix' extends away at ~45 degrees and bridges to a second complex, occupying the vacant v-SNARE binding site to inhibit fusion. We expected the accessory helix to compete with the v-SNARE for t-SNARE binding but found instead that the interaction occurs intermolecularly. Thus, complexin organizes the SNAREs into a zigzag topology that, when interposed between the vesicle and plasma membranes, is incompatible with fusion. | ||
| - | + | Complexin cross-links prefusion SNAREs into a zigzag array.,Kummel D, Krishnakumar SS, Radoff DT, Li F, Giraudo CG, Pincet F, Rothman JE, Reinisch KM Nat Struct Mol Biol. 2011 Jul 24;18(8):927-33. doi: 10.1038/nsmb.2101. PMID:21785414<ref>PMID:21785414</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
==See Also== | ==See Also== | ||
*[[Complexin|Complexin]] | *[[Complexin|Complexin]] | ||
*[[Insulin-like growth factor|Insulin-like growth factor]] | *[[Insulin-like growth factor|Insulin-like growth factor]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Rattus norvegicus]] | [[Category: Rattus norvegicus]] | ||
| - | [[Category: Kuemmel, D | + | [[Category: Kuemmel, D]] |
| - | [[Category: Reinisch, K M | + | [[Category: Reinisch, K M]] |
[[Category: Membrane fusion]] | [[Category: Membrane fusion]] | ||
[[Category: Membrane protein-exocytosis complex]] | [[Category: Membrane protein-exocytosis complex]] | ||
[[Category: Membrane protein-exocytosis-transport protein complex]] | [[Category: Membrane protein-exocytosis-transport protein complex]] | ||
[[Category: Snare protein]] | [[Category: Snare protein]] | ||
Revision as of 12:04, 9 December 2014
Truncated SNARE complex with complexin
| |||||||||||
