1t1d
From Proteopedia
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| - | [[ | + | ==CRYSTAL STRUCTURE OF THE TETRAMERIZATION DOMAIN OF THE SHAKER POTASSIUM CHANNEL== |
| + | <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 [http://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 [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1T1D FirstGlance]. <br> | ||
| + | </td></tr><tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1t1d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t1d OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1t1d RCSB], [http://www.ebi.ac.uk/pdbsum/1t1d PDBsum]</span></td></tr> | ||
| + | <table> | ||
| + | == 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/chain_selection.php?pdb_ID=2ata 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> | |
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==See Also== | ==See Also== | ||
*[[Potassium Channel|Potassium Channel]] | *[[Potassium Channel|Potassium Channel]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Aplysia californica]] | [[Category: Aplysia californica]] | ||
[[Category: Choe, S.]] | [[Category: Choe, S.]] | ||
Revision as of 19:19, 28 September 2014
CRYSTAL STRUCTURE OF THE TETRAMERIZATION DOMAIN OF THE SHAKER POTASSIUM CHANNEL
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