View source for 3buj


==Crystal Structure of CalO2==
<StructureSection load='3buj' size='340' side='right'caption='[[3buj]], [[Resolution|resolution]] 2.47&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3buj]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_15837 Atcc 15837]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BUJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BUJ FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">calO2 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1877 ATCC 15837])</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=3buj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3buj OCA], [https://pdbe.org/3buj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3buj RCSB], [https://www.ebi.ac.uk/pdbsum/3buj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3buj ProSAT]</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/bu/3buj_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=3buj ConSurf].
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== Publication Abstract from PubMed ==
Although bacterial iterative Type I polyketide synthases are now known to participate in the biosynthesis of a small set of diverse natural products, the subsequent downstream modification of the resulting polyketide products remains poorly understood. Toward this goal, we report the X-ray structure determination at 2.5 A resolution and preliminary characterization of the putative orsellenic acid P450 oxidase (CalO2) involved in calicheamicin biosynthesis. These studies represent the first crystal structure for a P450 involved in modifying a bacterial iterative Type I polyketide product and suggest the CalO2-catalyzed step may occur after CalO3-catalyzed iodination and may also require a coenzyme A- (CoA) or acyl carrier protein- (ACP) bound substrate. Docking studies also reveal a putative docking site within CalO2 for the CLM orsellinic acid synthase (CalO5) ACP domain which involves a well-ordered helix along the CalO2 active site cavity that is unique compared with other P450 structures.

Structural characterization of CalO2: a putative orsellinic acid P450 oxidase in the calicheamicin biosynthetic pathway.,McCoy JG, Johnson HD, Singh S, Bingman CA, Lei IK, Thorson JS, Phillips GN Jr Proteins. 2009 Jan;74(1):50-60. PMID:18561189<ref>PMID:18561189</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 3buj" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Atcc 15837]]
[[Category: Large Structures]]
[[Category: Bingman, C A]]
[[Category: Johnson, H D]]
[[Category: McCoy, J G]]
[[Category: Phillips, G N]]
[[Category: Singh, S]]
[[Category: Thorson, J S]]
[[Category: Heme]]
[[Category: Iron]]
[[Category: Metal binding protein]]
[[Category: Metal-binding]]
[[Category: Monooxygenase]]
[[Category: Oxidoreductase]]
[[Category: P450]]