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2iu5
From Proteopedia
(Difference between revisions)
(New page: 200px<br /><applet load="2iu5" size="450" color="white" frame="true" align="right" spinBox="true" caption="2iu5, resolution 1.60Å" /> '''DIHYDROXYACETONE KIN...) |
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| - | [[Image:2iu5.gif|left|200px]]<br /><applet load="2iu5" size="450" color="white" frame="true" align="right" spinBox="true" | ||
| - | caption="2iu5, resolution 1.60Å" /> | ||
| - | '''DIHYDROXYACETONE KINASE OPERON ACTIVATOR DHAS'''<br /> | ||
| - | == | + | ==Dihydroxyacetone kinase operon activator DhaS== |
| - | Dihydroxyacetone (Dha) kinases are a novel family of kinases with | + | <StructureSection load='2iu5' size='340' side='right'caption='[[2iu5]], [[Resolution|resolution]] 1.60Å' scene=''> |
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[2iu5]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Lactococcus_lactis_subsp._lactis_Il1403 Lactococcus lactis subsp. lactis Il1403]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IU5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IU5 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]] 1.6Å</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=2iu5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2iu5 OCA], [https://pdbe.org/2iu5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2iu5 RCSB], [https://www.ebi.ac.uk/pdbsum/2iu5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2iu5 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/DHAS_LACLA DHAS_LACLA] In complex with DhaQ, upon activation by dihydroxyacetone, activates transcription of the dhaKLM operon. Binds the inverted repeat sequence 5'-GGACACATN(6)ATTTGTCC-3' located upstream of and partially overlapping with the -35 promoter sequence of the dhaKLM operon promoter. | ||
| + | == 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/iu/2iu5_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=2iu5 ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Dihydroxyacetone (Dha) kinases are a novel family of kinases with signaling and metabolic functions. Here we report the x-ray structures of the transcriptional activator DhaS and the coactivator DhaQ and characterize their function. DhaQ is a paralog of the Dha binding Dha kinase subunit; DhaS belongs to the family of TetR repressors although, unlike all known members of this family, it is a transcriptional activator. DhaQ and DhaS form a stable complex that in the presence of Dha activates transcription of the Lactococcus lactis dha operon. Dha covalently binds to DhaQ through a hemiaminal bond with a histidine and thereby induces a conformational change, which is propagated to the surface via a cantilever-like structure. DhaS binding protects an inverted repeat whose sequence is GGACACATN6ATTTGTCC and renders two GC base pairs of the operator DNA hypersensitive to DNase I cleavage. The proximal half-site of the inverted repeat partially overlaps with the predicted -35 consensus sequence of the dha promoter. | ||
| - | + | Regulation of the Dha operon of Lactococcus lactis: a deviation from the rule followed by the Tetr family of transcription regulators.,Christen S, Srinivas A, Bahler P, Zeller A, Pridmore D, Bieniossek C, Baumann U, Erni B J Biol Chem. 2006 Aug 11;281(32):23129-37. Epub 2006 Jun 7. PMID:16760471<ref>PMID:16760471</ref> | |
| - | + | ||
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | [[Category: Lactococcus lactis subsp. lactis | + | <div class="pdbe-citations 2iu5" style="background-color:#fffaf0;"></div> |
| - | [[Category: | + | == References == |
| - | [[Category: Baumann | + | <references/> |
| - | [[Category: Christen | + | __TOC__ |
| - | [[Category: Erni | + | </StructureSection> |
| - | [[Category: Srinivas | + | [[Category: Lactococcus lactis subsp. lactis Il1403]] |
| - | + | [[Category: Large Structures]] | |
| - | + | [[Category: Baumann U]] | |
| - | + | [[Category: Christen S]] | |
| - | + | [[Category: Erni B]] | |
| - | + | [[Category: Srinivas A]] | |
| - | + | ||
| - | + | ||
Current revision
Dihydroxyacetone kinase operon activator DhaS
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