1q6a: Difference between revisions

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-[[Image:1q6a.png|left|200px]]
+==Solution Structure of the C-terminal Domain of Thermosynechococcus elongatus KaiA (ThKaiA180C); Averaged Minimized Structure==
+<StructureSection load='1q6a' size='340' side='right' caption='[[1q6a]], [[NMR_Ensembles_of_Models | 1 NMR models]]' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1q6a]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermosynechococcus_elongatus_bp-1 Thermosynechococcus elongatus bp-1]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q6A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1Q6A FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KaiA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=197221 Thermosynechococcus elongatus BP-1])</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=1q6a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q6a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1q6a RCSB], [http://www.ebi.ac.uk/pdbsum/1q6a 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/q6/1q6a_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 ==
+KaiA is a two-domain circadian clock protein in cyanobacteria, acting as the positive element in a feedback loop that sustains the oscillation. The structure of the N-terminal domain of KaiA is that of a pseudo-receiver, similar to those of bacterial response regulators, which likely interacts with components of the clock-resetting pathway. The C-terminal domain of KaiA is highly conserved among cyanobacteria and enhances the autokinase activity of KaiC. Here we present the NMR structure of the C-terminal domain of KaiA from the thermophilic cyanobacterium Thermosynechococcus elongatus BP-1. This domain adopts a novel all alpha-helical homodimeric structure. Several mutations known to affect the period of the circadian oscillator are shown to be located at an exposed groove near the dimer interface. This NMR structure and a 21-A-resolution electron microscopy structure of the hexameric KaiC particle allow us to postulate a mode of KaiA-KaiC interaction, in which KaiA binds a linker region connecting two globular KaiC domains.
-{{STRUCTURE_1q6a|  PDB=1q6a  |  SCENE=  }}
+NMR structure of the KaiC-interacting C-terminal domain of KaiA, a circadian clock protein: implications for KaiA-KaiC interaction.,Vakonakis I, Sun J, Wu T, Holzenburg A, Golden SS, LiWang AC Proc Natl Acad Sci U S A. 2004 Feb 10;101(6):1479-84. Epub 2004 Jan 28. PMID:14749515<ref>PMID:14749515</ref>
-===Solution Structure of the C-terminal Domain of Thermosynechococcus elongatus KaiA (ThKaiA180C); Averaged Minimized Structure===
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-{{ABSTRACT_PUBMED_14749515}}
+==See Also==
+*[[Circadian clock protein|Circadian clock protein]]
-==About this Structure==
+== References ==
-[[1q6a]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermosynechococcus_elongatus_bp-1 Thermosynechococcus elongatus bp-1]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q6A OCA].
+<references/>
+__TOC__
-==Reference==
+</StructureSection>
-<ref group="xtra">PMID:014749515</ref><references group="xtra"/>
 [[Category: Thermosynechococcus elongatus bp-1]]
 [[Category: Golden, S S.]]