1t1d: Difference between revisions
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New page: left|200px<br /><applet load="1t1d" size="450" color="white" frame="true" align="right" spinBox="true" caption="1t1d, resolution 1.51Å" /> '''CRYSTAL STRUCTURE OF... |
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== | ==CRYSTAL STRUCTURE OF THE TETRAMERIZATION DOMAIN OF THE SHAKER POTASSIUM CHANNEL== | ||
The N-terminal, cytoplasmic tetramerization domain (T1) of voltage-gated | <StructureSection load='1t1d' size='340' side='right'caption='[[1t1d]], [[Resolution|resolution]] 1.51Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1t1d]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Aplysia_californica Aplysia californica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T1D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1T1D FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.51Å</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=1t1d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t1d OCA], [https://pdbe.org/1t1d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1t1d RCSB], [https://www.ebi.ac.uk/pdbsum/1t1d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1t1d ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q16968_APLCA Q16968_APLCA] | |||
== 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/t1/1t1d_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=1t1d ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The N-terminal, cytoplasmic tetramerization domain (T1) of voltage-gated K+ channels encodes molecular determinants for subfamily-specific assembly of alpha-subunits into functional tetrameric channels. Crystal structures of T1 tetramers from Shaw and Shaker subfamilies reveal a common four-layered scaffolding. Within layer 4, on the hypothetical membrane-facing side of the tetramer, the Shaw T1 tetramer contains four zinc ions; each is coordinated by a histidine and two cysteines from one monomer and by one cysteine from an adjacent monomer. The amino acids involved in coordinating the Zn2+ ion occur in a HX5CX20CC sequence motif that is highly conserved among all Shab, Shaw and Shal subfamily members, but is not found in Shaker subfamily members. We demonstrate by coimmunoprecipitation that a few characteristic residues in the subunit interface are crucial for subfamily-specific tetramerization of the T1 domains. | |||
Zn2+-binding and molecular determinants of tetramerization in voltage-gated K+ channels.,Bixby KA, Nanao MH, Shen NV, Kreusch A, Bellamy H, Pfaffinger PJ, Choe S Nat Struct Biol. 1999 Jan;6(1):38-43. PMID:9886290<ref>PMID:9886290</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1t1d" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Potassium channel 3D structures|Potassium channel 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Aplysia californica]] | [[Category: Aplysia californica]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Choe | [[Category: Choe S]] | ||
[[Category: Kreusch | [[Category: Kreusch A]] | ||
[[Category: Pfaffinger | [[Category: Pfaffinger PJ]] | ||
[[Category: Stevens | [[Category: Stevens CF]] | ||
Latest revision as of 06:23, 23 August 2023
CRYSTAL STRUCTURE OF THE TETRAMERIZATION DOMAIN OF THE SHAKER POTASSIUM CHANNEL
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