3kki: Difference between revisions

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{{STRUCTURE_3kki| PDB=3kki | SCENE= }}
==PLP-Dependent Acyl-CoA transferase CqsA==
===PLP-Dependent Acyl-CoA transferase CqsA===
<StructureSection load='3kki' size='340' side='right' caption='[[3kki]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
{{ABSTRACT_PUBMED_19838203}}
== Structural highlights ==
<table><tr><td colspan='2'>[[3kki]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Vibrio_cholerae Vibrio cholerae]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3hqs 3hqs]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KKI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3KKI FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">cqsA, VC_A0523 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=666 Vibrio cholerae])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3kki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kki OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3kki RCSB], [http://www.ebi.ac.uk/pdbsum/3kki 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/kk/3kki_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 ==
Vibrio cholerae, the bacterium that causes the disease cholera, controls virulence factor production and biofilm development in response to two extracellular quorum-sensing molecules, called autoinducers. The strongest autoinducer, called CAI-1 (for cholera autoinducer-1), was previously identified as (S)-3-hydroxytridecan-4-one. Biosynthesis of CAI-1 requires the enzyme CqsA. Here, we determine the CqsA reaction mechanism, identify the CqsA substrates as (S)-2-aminobutyrate and decanoyl coenzyme A, and demonstrate that the product of the reaction is 3-aminotridecan-4-one, dubbed amino-CAI-1. CqsA produces amino-CAI-1 by a pyridoxal phosphate-dependent acyl-CoA transferase reaction. Amino-CAI-1 is converted to CAI-1 in a subsequent step via a CqsA-independent mechanism. Consistent with this, we find cells release &gt; or =100 times more CAI-1 than amino-CAI-1. Nonetheless, V. cholerae responds to amino-CAI-1 as well as CAI-1, whereas other CAI-1 variants do not elicit a quorum-sensing response. Thus, both CAI-1 and amino-CAI-1 have potential as lead molecules in the development of an anticholera treatment.


==Function==
The Vibrio cholerae quorum-sensing autoinducer CAI-1: analysis of the biosynthetic enzyme CqsA.,Kelly RC, Bolitho ME, Higgins DA, Lu W, Ng WL, Jeffrey PD, Rabinowitz JD, Semmelhack MF, Hughson FM, Bassler BL Nat Chem Biol. 2009 Dec;5(12):891-5. Epub 2009 Oct 18. PMID:19838203<ref>PMID:19838203</ref>
[[http://www.uniprot.org/uniprot/CQSA_VIBCH CQSA_VIBCH]] Required for the synthesis of the quorum-sensing autoinducer CAI-1 ((S)-3-hydroxytridecan-4-one) which probably functions as an intragenus signal.  


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
[[3kki]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Vibrio_cholerae Vibrio cholerae]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3hqs 3hqs]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KKI OCA].
</div>
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:019838203</ref><references group="xtra"/><references/>
__TOC__
</StructureSection>
[[Category: Vibrio cholerae]]
[[Category: Vibrio cholerae]]
[[Category: Hughson, F M.]]
[[Category: Hughson, F M]]
[[Category: Jeffrey, P D.]]
[[Category: Jeffrey, P D]]
[[Category: Kelly, R C.]]
[[Category: Kelly, R C]]
[[Category: Acyltransferase]]
[[Category: Acyltransferase]]
[[Category: Aminotransferase]]
[[Category: Aminotransferase]]
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[[Category: Quorum sensing]]
[[Category: Quorum sensing]]
[[Category: Transferase]]
[[Category: Transferase]]
[[Category: Vibrio cholerae]]
[[Category: Virulence]]
[[Category: Virulence]]
Retrieved from "https://proteopedia.org/3kki"