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[[Image:1izo.gif|left|200px]]
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{{STRUCTURE_1izo|  PDB=1izo  |  SCENE=  }}
'''Cytochrome P450 BS beta Complexed with Fatty Acid'''


==Cytochrome P450 BS beta Complexed with Fatty Acid==
<StructureSection load='1izo' size='340' side='right'caption='[[1izo]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1izo]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IZO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IZO 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]] 2.1&#8491;</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>, <scene name='pdbligand=PAM:PALMITOLEIC+ACID'>PAM</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=1izo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1izo OCA], [https://pdbe.org/1izo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1izo RCSB], [https://www.ebi.ac.uk/pdbsum/1izo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1izo ProSAT], [https://www.topsan.org/Proteins/RSGI/1izo TOPSAN]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CYPC_BACSU CYPC_BACSU] Catalyzes the alpha- and beta-hydroxylation of myristic acid in the presence of hydrogen peroxide.
== 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/iz/1izo_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=1izo ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Cytochrome P450 isolated from Bacillus subtilis (P450(BSbeta); molecular mass, 48 kDa) catalyzes the hydroxylation of a long-chain fatty acid (e.g. myristic acid) at the alpha- and beta-positions using hydrogen peroxide as an oxidant. We report here on the crystal structure of ferric P450(BSbeta) in the substrate-bound form, determined at a resolution of 2.1 A. P450(BSbeta) exhibits a typical P450 fold. The substrate binds to a specific channel in the enzyme and is stabilized through hydrophobic interactions of its alkyl side chain with some hydrophobic residues on the enzyme as well as by electrostatic interaction of its terminal carboxylate with the Arg(242) guanidium group. These interactions are responsible for the site specificity of the hydroxylation site in which the alpha- and beta-positions of the fatty acid come into close proximity to the heme iron sixth site. The fatty acid carboxylate group interacts with Arg(242) in the same fashion as has been reported for the active site of chloroperoxidase, His(105)-Glu(183), which is an acid-base catalyst in the peroxidation reactions. On the basis of these observations, a possible mechanism for the hydroxylation reaction catalyzed by P450(BSbeta) is proposed in which the carboxylate of the bound-substrate fatty acid assists in the cleavage of the peroxide O-O bond.


==Overview==
Substrate recognition and molecular mechanism of fatty acid hydroxylation by cytochrome P450 from Bacillus subtilis. Crystallographic, spectroscopic, and mutational studies.,Lee DS, Yamada A, Sugimoto H, Matsunaga I, Ogura H, Ichihara K, Adachi S, Park SY, Shiro Y J Biol Chem. 2003 Mar 14;278(11):9761-7. Epub 2003 Jan 7. PMID:12519760<ref>PMID:12519760</ref>
Cytochrome P450 isolated from Bacillus subtilis (P450(BSbeta); molecular mass, 48 kDa) catalyzes the hydroxylation of a long-chain fatty acid (e.g. myristic acid) at the alpha- and beta-positions using hydrogen peroxide as an oxidant. We report here on the crystal structure of ferric P450(BSbeta) in the substrate-bound form, determined at a resolution of 2.1 A. P450(BSbeta) exhibits a typical P450 fold. The substrate binds to a specific channel in the enzyme and is stabilized through hydrophobic interactions of its alkyl side chain with some hydrophobic residues on the enzyme as well as by electrostatic interaction of its terminal carboxylate with the Arg(242) guanidium group. These interactions are responsible for the site specificity of the hydroxylation site in which the alpha- and beta-positions of the fatty acid come into close proximity to the heme iron sixth site. The fatty acid carboxylate group interacts with Arg(242) in the same fashion as has been reported for the active site of chloroperoxidase, His(105)-Glu(183), which is an acid-base catalyst in the peroxidation reactions. On the basis of these observations, a possible mechanism for the hydroxylation reaction catalyzed by P450(BSbeta) is proposed in which the carboxylate of the bound-substrate fatty acid assists in the cleavage of the peroxide O-O bond.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1IZO is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IZO OCA].
</div>
<div class="pdbe-citations 1izo" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Substrate recognition and molecular mechanism of fatty acid hydroxylation by cytochrome P450 from Bacillus subtilis. Crystallographic, spectroscopic, and mutational studies., Lee DS, Yamada A, Sugimoto H, Matsunaga I, Ogura H, Ichihara K, Adachi S, Park SY, Shiro Y, J Biol Chem. 2003 Mar 14;278(11):9761-7. Epub 2003 Jan 7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12519760 12519760]
*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bacillus subtilis]]
[[Category: Bacillus subtilis]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Adachi, S.]]
[[Category: Adachi S]]
[[Category: Ichihara, K.]]
[[Category: Ichihara K]]
[[Category: Lee, D S.]]
[[Category: Lee DS]]
[[Category: Matsunaga, I.]]
[[Category: Matsunaga I]]
[[Category: Ogura, H.]]
[[Category: Ogura H]]
[[Category: Park, S Y.]]
[[Category: Park SY]]
[[Category: RSGI, RIKEN Structural Genomics/Proteomics Initiative.]]
[[Category: Shiro Y]]
[[Category: Shiro, Y.]]
[[Category: Sugimoto H]]
[[Category: Sugimoto, H.]]
[[Category: Yamada A]]
[[Category: Yamada, A.]]
[[Category: Heme protein]]
[[Category: Protein-fatty acid complex]]
[[Category: Riken structural genomics/proteomics initiative]]
[[Category: Rsgi]]
[[Category: Structural genomic]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 20:37:47 2008''

Latest revision as of 06:14, 13 August 2026

Cytochrome P450 BS beta Complexed with Fatty Acid

1izo, resolution 2.10Å

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