1k5w: Difference between revisions
New page: left|200px<br /><applet load="1k5w" size="450" color="white" frame="true" align="right" spinBox="true" caption="1k5w" /> '''THREE-DIMENSIONAL STRUCTURE OF THE SYNAPTOTA... |
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== | ==THREE-DIMENSIONAL STRUCTURE OF THE SYNAPTOTAGMIN 1 C2B-DOMAIN: SYNAPTOTAGMIN 1 AS A PHOSPHOLIPID BINDING MACHINE== | ||
Synaptotagmin 1 probably functions as a Ca2+ sensor in neurotransmitter | <StructureSection load='1k5w' size='340' side='right'caption='[[1k5w]]' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1k5w]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1K5W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1K5W FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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></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=1k5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k5w OCA], [https://pdbe.org/1k5w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1k5w RCSB], [https://www.ebi.ac.uk/pdbsum/1k5w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1k5w ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/SYT1_RAT SYT1_RAT] May have a regulatory role in the membrane interactions during trafficking of synaptic vesicles at the active zone of the synapse. It binds acidic phospholipids with a specificity that requires the presence of both an acidic head group and a diacyl backbone. A Ca(2+)-dependent interaction between synaptotagmin and putative receptors for activated protein kinase C has also been reported. It can bind to at least three additional proteins in a Ca(2+)-independent manner; these are neurexins, syntaxin and AP2. | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/k5/1k5w_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</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=1k5w ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Synaptotagmin 1 probably functions as a Ca2+ sensor in neurotransmitter release via its two C2-domains, but no common Ca2+-dependent activity that could underlie a cooperative action between them has been described. The NMR structure of the C2B-domain now reveals a beta sandwich that exhibits striking similarities and differences with the C2A-domain. Whereas the bottom face of the C2B-domain has two additional alpha helices that may be involved in specialized Ca2+-independent functions, the top face binds two Ca2+ ions and is remarkably similar to the C2A-domain. Consistent with these results, but in contrast to previous studies, we find that the C2B-domain binds phospholipids in a Ca2+-dependent manner similarly to the C2A-domain. These results suggest a novel view of synaptotagmin function whereby the two C2-domains cooperate in a common activity, Ca2+-dependent phospholipid binding, to trigger neurotransmitter release. | |||
Three-dimensional structure of the synaptotagmin 1 C2B-domain: synaptotagmin 1 as a phospholipid binding machine.,Fernandez I, Arac D, Ubach J, Gerber SH, Shin O, Gao Y, Anderson RG, Sudhof TC, Rizo J Neuron. 2001 Dec 20;32(6):1057-69. PMID:11754837<ref>PMID:11754837</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1k5w" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Synaptotagmin 3D structures|Synaptotagmin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Rattus norvegicus]] | [[Category: Rattus norvegicus]] | ||
[[Category: Anderson RGW]] | |||
[[Category: Anderson | [[Category: Arac D]] | ||
[[Category: Arac | [[Category: Fernandez I]] | ||
[[Category: Fernandez | [[Category: Gao Y]] | ||
[[Category: Gao | [[Category: Gerber SH]] | ||
[[Category: Gerber | [[Category: Rizo J]] | ||
[[Category: Rizo | [[Category: Shin O]] | ||
[[Category: Shin | [[Category: Sudhof TC]] | ||
[[Category: Sudhof | [[Category: Ubach J]] | ||
[[Category: Ubach | |||
