1w0f: Difference between revisions

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==Crystal structure of human cytochrome P450 3A4==
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<StructureSection load='1w0f' size='340' side='right'caption='[[1w0f]], [[Resolution|resolution]] 2.65&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1w0f]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W0F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1W0F FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.65&#8491;</td></tr>
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<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=STR:PROGESTERONE'>STR</scene></td></tr>
{{STRUCTURE_1w0f|  PDB=1w0f  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1w0f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1w0f OCA], [https://pdbe.org/1w0f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1w0f RCSB], [https://www.ebi.ac.uk/pdbsum/1w0f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1w0f ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CP3A4_HUMAN CP3A4_HUMAN] Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4-hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Acts as a 1,8-cineole 2-exo-monooxygenase. The enzyme also hydroxylates etoposide.<ref>PMID:11159812</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
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    <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=1w0f ConSurf].
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== Publication Abstract from PubMed ==
Cytochromes P450 (P450s) metabolize a wide range of endogenous compounds and xenobiotics, such as pollutants, environmental compounds, and drug molecules. The microsomal, membrane-associated, P450 isoforms CYP3A4, CYP2D6, CYP2C9, CYP2C19, CYP2E1, and CYP1A2 are responsible for the oxidative metabolism of more than 90% of marketed drugs. Cytochrome P450 3A4 (CYP3A4) metabolizes more drug molecules than all other isoforms combined. Here we report three crystal structures of CYP3A4: unliganded, bound to the inhibitor metyrapone, and bound to the substrate progesterone. The structures revealed a surprisingly small active site, with little conformational change associated with the binding of either compound. An unexpected peripheral binding site is identified, located above a phenylalanine cluster, which may be involved in the initial recognition of substrates or allosteric effectors.


===CRYSTAL STRUCTURE OF HUMAN CYTOCHROME P450 3A4===
Crystal structures of human cytochrome P450 3A4 bound to metyrapone and progesterone.,Williams PA, Cosme J, Vinkovic DM, Ward A, Angove HC, Day PJ, Vonrhein C, Tickle IJ, Jhoti H Science. 2004 Jul 30;305(5684):683-6. Epub 2004 Jul 15. PMID:15256616<ref>PMID:15256616</ref>


 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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{{ABSTRACT_PUBMED_15256616}}
 
==About this Structure==
[[1w0f]] is a 1 chain structure of [[Cytochrome P450]] with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1W0F OCA].


==See Also==
==See Also==
*[[Cytochrome P450]]
*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:15256616</ref><references group="xtra"/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Angove, H C.]]
[[Category: Large Structures]]
[[Category: Cosme, J.]]
[[Category: Angove HC]]
[[Category: Day, P J.]]
[[Category: Cosme J]]
[[Category: Jhoti, H.]]
[[Category: Day PJ]]
[[Category: Tickle, I J.]]
[[Category: Jhoti H]]
[[Category: Vinkovic, D M.]]
[[Category: Tickle IJ]]
[[Category: Vonrhein, C.]]
[[Category: Vinkovic DM]]
[[Category: Ward, A.]]
[[Category: Vonrhein C]]
[[Category: Williams, P A.]]
[[Category: Ward A]]
[[Category: Cytochrome p450]]
[[Category: Williams PA]]
[[Category: Electron transport]]
[[Category: Monooxygenase]]
[[Category: Nifedipine oxidase]]
[[Category: Oxidoreductase]]

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