View source for 1cpo


==CHLOROPEROXIDASE==
<StructureSection load='1cpo' size='340' side='right'caption='[[1cpo]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1cpo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Leptoxyphium_fumago Leptoxyphium fumago]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CPO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CPO 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]] 1.9&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ARB:BETA-L-ARABINOSE'>ARB</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene>, <scene name='pdbligand=XYS:XYLOPYRANOSE'>XYS</scene></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=1cpo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cpo OCA], [https://pdbe.org/1cpo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cpo RCSB], [https://www.ebi.ac.uk/pdbsum/1cpo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cpo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PRXC_LEPFU PRXC_LEPFU] Catalyzes peroxidative halogenations involved in the biosynthesis of clardariomycin (2,2-dichloro-1,3-cyclo-pentenedione). The enzyme also has potent catalase activity and in the absence of halide ion, acts as a peroxidase similar to plant peroxidases.
== 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/cp/1cpo_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1cpo ConSurf].
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== Publication Abstract from PubMed ==
BACKGROUND: Chloroperoxidase (CPO) is a versatile heme-containing enzyme that exhibits peroxidase, catalase and cytochrome P450-like activities in addition to catalyzing halogenation reactions. The structure determination of CPO was undertaken to help elucidate those structural features that enable the enzyme to exhibit these multiple activities. RESULTS: Despite functional similarities with other heme enzymes, CPO folds into a novel tertiary structure dominated by eight helical segments. The catalytic base, required to cleave the peroxide O-O bond, is glutamic acid rather than histidine as in other peroxidases. CPO contains a hydrophobic patch above the heme that could be the binding site for substrates that undergo P450-like reactions. The crystal structure also shows extensive glycosylation with both N- and O-linked glycosyl chains. CONCLUSIONS: The proximal side of the heme in CPO resembles cytochrome P450 because a cysteine residue serves as an axial heme ligand, whereas the distal side of the heme is 'peroxidase-like' in that polar residues form the peroxide-binding site. Access to the heme pocket is restricted to the distal face such that small organic substrates can interact with the iron-linked oxygen atom which accounts for the P450-like reactions catalyzed by chloroperoxidase.

The crystal structure of chloroperoxidase: a heme peroxidase--cytochrome P450 functional hybrid.,Sundaramoorthy M, Terner J, Poulos TL Structure. 1995 Dec 15;3(12):1367-77. PMID:8747463<ref>PMID:8747463</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 1cpo" style="background-color:#fffaf0;"></div>

==See Also==
*[[Haloperoxidase|Haloperoxidase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Leptoxyphium fumago]]
[[Category: Poulos TL]]
[[Category: Sundaramoorthy M]]