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== | ==THREE DIMENSIONAL STRUCTURE OF THE N-TERMINAL DOMAIN OF SYNTAXIN 1A== | ||
<StructureSection load='1br0' size='340' side='right'caption='[[1br0]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1br0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. The November 2013 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''SNARE Proteins'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2013_11 10.2210/rcsb_pdb/mom_2013_11]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BR0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BR0 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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1br0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1br0 OCA], [https://pdbe.org/1br0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1br0 RCSB], [https://www.ebi.ac.uk/pdbsum/1br0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1br0 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/STX1A_RAT STX1A_RAT] Potentially involved in docking of synaptic vesicles at presynaptic active zones. May play a critical role in neurotransmitter exocytosis. May mediate Ca(2+)-regulation of exocytosis acrosomal reaction in sperm. | |||
== 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/br/1br0_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=1br0 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Syntaxin 1A plays a central role in neurotransmitter release through multiple protein-protein interactions. We have used NMR spectroscopy to identify an autonomously folded N-terminal domain in syntaxin 1A and to elucidate its three-dimensional structure. This 120-residue N-terminal domain is conserved in plasma membrane syntaxins but not in other syntaxins, indicating a specific role in exocytosis. The domain contains three long alpha helices that form an up-and-down bundle with a left-handed twist. A striking residue conservation is observed throughout a long groove that is likely to provide a specific surface for protein-protein interactions. A highly acidic region binds to the C2A domain of synaptotagmin I in a Ca2+-dependent interaction that may serve as an electrostatic switch in neurotransmitter release. | Syntaxin 1A plays a central role in neurotransmitter release through multiple protein-protein interactions. We have used NMR spectroscopy to identify an autonomously folded N-terminal domain in syntaxin 1A and to elucidate its three-dimensional structure. This 120-residue N-terminal domain is conserved in plasma membrane syntaxins but not in other syntaxins, indicating a specific role in exocytosis. The domain contains three long alpha helices that form an up-and-down bundle with a left-handed twist. A striking residue conservation is observed throughout a long groove that is likely to provide a specific surface for protein-protein interactions. A highly acidic region binds to the C2A domain of synaptotagmin I in a Ca2+-dependent interaction that may serve as an electrostatic switch in neurotransmitter release. | ||
Three-dimensional structure of an evolutionarily conserved N-terminal domain of syntaxin 1A.,Fernandez I, Ubach J, Dulubova I, Zhang X, Sudhof TC, Rizo J Cell. 1998 Sep 18;94(6):841-9. PMID:9753330<ref>PMID:9753330</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
<div class="pdbe-citations 1br0" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Syntaxin 3D structures|Syntaxin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: RCSB PDB Molecule of the Month]] | |||
[[Category: Rattus norvegicus]] | [[Category: Rattus norvegicus]] | ||
[[Category: | [[Category: SNARE Proteins]] | ||
[[Category: Dubulova | [[Category: Dubulova I]] | ||
[[Category: Fernandez | [[Category: Fernandez I]] | ||
[[Category: Rizo | [[Category: Rizo J]] | ||
[[Category: Sudhof | [[Category: Sudhof TC]] | ||
[[Category: Ubach | [[Category: Ubach J]] | ||
[[Category: Zhang | [[Category: Zhang X]] | ||