View source for 2qo3

==Crystal Structure of [KS3][AT3] didomain from module 3 of 6-deoxyerthronolide B synthase==
<StructureSection load='2qo3' size='340' side='right' caption='[[2qo3]], [[Resolution|resolution]] 2.59&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2qo3]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"actinomyces_erythreus"_(sic)_waksman_1923 "actinomyces erythreus" (sic) waksman 1923]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2QO3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2QO3 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CER:(2S,+3R)-3-HYDROXY-4-OXO-7,10-TRANS,TRANS-DODECADIENAMIDE'>CER</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2hg4|2hg4]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">eryAII ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1836 "Actinomyces erythreus" (sic) Waksman 1923])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/6-deoxyerythronolide-B_synthase 6-deoxyerythronolide-B synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.94 2.3.1.94] </span></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=2qo3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2qo3 OCA], [http://pdbe.org/2qo3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2qo3 RCSB], [http://www.ebi.ac.uk/pdbsum/2qo3 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/qo/2qo3_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=2qo3 ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
We report the 2.6 A X-ray crystal structure of a 190 kDa homodimeric fragment from module 3 of the 6-deoxyerthronolide B synthase covalently bound to the inhibitor cerulenin. The structure shows two well-organized interdomain linker regions in addition to the full-length ketosynthase (KS) and acyltransferase (AT) domains. Analysis of the substrate-binding site of the KS domain suggests that a loop region at the homodimer interface influences KS substrate specificity. We also describe a model for the interaction of the catalytic domains with the acyl carrier protein (ACP) domain. The ACP is proposed to dock within a deep cleft between the KS and AT domains, with interactions that span both the KS homodimer and AT domain. In conjunction with other recent data, our results provide atomic resolution pictures of several catalytically relevant protein interactions in this remarkable family of modular megasynthases.

Structural and mechanistic analysis of protein interactions in module 3 of the 6-deoxyerythronolide B synthase.,Tang Y, Chen AY, Kim CY, Cane DE, Khosla C Chem Biol. 2007 Aug;14(8):931-43. PMID:17719492<ref>PMID:17719492</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2qo3" style="background-color:#fffaf0;"></div>

==See Also==
*[[6-deoxyerythronolide B synthase (DEBS)|6-deoxyerythronolide B synthase (DEBS)]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: 6-deoxyerythronolide-B synthase]]
[[Category: Cane, E D]]
[[Category: Chen, Y A]]
[[Category: Khosla, C]]
[[Category: Kim, C Y]]
[[Category: Tang, Y]]
[[Category: Acyltransferase]]
[[Category: Ketosynthase]]
[[Category: Phosphopantetheine]]
[[Category: Transferase]]