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| | ==Crystal structure of P450 2B4(H226Y) in complex with paroxetine== | | ==Crystal structure of P450 2B4(H226Y) in complex with paroxetine== |
| - | <StructureSection load='4jlt' size='340' side='right' caption='[[4jlt]], [[Resolution|resolution]] 2.14Å' scene=''> | + | <StructureSection load='4jlt' size='340' side='right'caption='[[4jlt]], [[Resolution|resolution]] 2.14Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4jlt]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/European_rabbit European rabbit]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JLT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4JLT FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4jlt]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JLT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4JLT FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=8PR:PAROXETINE'>8PR</scene>, <scene name='pdbligand=CM5:5-CYCLOHEXYL-1-PENTYL-BETA-D-MALTOSIDE'>CM5</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=8PR:PAROXETINE'>8PR</scene>, <scene name='pdbligand=CM5:5-CYCLOHEXYL-1-PENTYL-BETA-D-MALTOSIDE'>CM5</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2q6n|2q6n]], [[3kw4|3kw4]], [[2bdm|2bdm]], [[1suo|1suo]], [[3me6|3me6]], [[3mvr|3mvr]], [[3g5n|3g5n]], [[3r1a|3r1a]], [[3r1b|3r1b]], [[3g93|3g93]], [[1po5|1po5]], [[3uas|3uas]], [[4h1n|4h1n]], [[3tk3|3tk3]], [[3tmz|3tmz]]</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=4jlt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jlt OCA], [https://pdbe.org/4jlt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4jlt RCSB], [https://www.ebi.ac.uk/pdbsum/4jlt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4jlt ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CYP2B4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9986 European rabbit])</td></tr>
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| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Unspecific_monooxygenase Unspecific monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.14.1 1.14.14.1] </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=4jlt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jlt OCA], [http://pdbe.org/4jlt PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4jlt RCSB], [http://www.ebi.ac.uk/pdbsum/4jlt PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4jlt ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/CP2B4_RABIT CP2B4_RABIT]] Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. In the epoxidation of arachidonic acid it has a unique preference for the 5,6-olefin. | + | [https://www.uniprot.org/uniprot/CP2B4_RABIT CP2B4_RABIT] Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. In the epoxidation of arachidonic acid it has a unique preference for the 5,6-olefin. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | ==See Also== | | ==See Also== |
| - | *[[Cytochrome P450|Cytochrome P450]] | + | *[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: European rabbit]] | + | [[Category: Large Structures]] |
| - | [[Category: Unspecific monooxygenase]] | + | [[Category: Oryctolagus cuniculus]] |
| - | [[Category: Halpert, J R]] | + | [[Category: Halpert JR]] |
| - | [[Category: Pascual, J]] | + | [[Category: Pascual J]] |
| - | [[Category: Shah, M B]] | + | [[Category: Shah MB]] |
| - | [[Category: Stout, C D]] | + | [[Category: Stout CD]] |
| - | [[Category: Cyp 2b4]]
| + | |
| - | [[Category: Cytochrome p450 2b4]]
| + | |
| - | [[Category: Me protein]]
| + | |
| - | [[Category: Monooxygenase]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| - | [[Category: P450]]
| + | |
| Structural highlights
4jlt is a 1 chain structure with sequence from Oryctolagus cuniculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Ligands: | , , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
CP2B4_RABIT Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. In the epoxidation of arachidonic acid it has a unique preference for the 5,6-olefin.
Publication Abstract from PubMed
An X-ray crystal structure of CYP2B4 in complex with the drug paroxetine [(3S,4R)-3-[(2H-1,3-benzodioxol-5-yloxy)methyl]-4-(4-fluorophenyl)piperidine] was solved at 2.14 A resolution. The structure revealed a conformation intermediate to that of the recently solved complex with amlodipine and that of the more compact complex with 4-(4-chlorophenyl)imidazole in terms of the placement of the F-G cassette. Moreover, comparison of the new structure with 15 previously solved structures of CYP2B4 revealed some new insights into the determinants of active-site size and shape. The 2B4-paroxetine structure is nearly superimposable on a previously solved closed structure in a ligand-free state. Despite the overall conformational similarity among multiple closed structures, the active-site cavity volume of the paroxetine complex is enlarged. Further analysis of the accessible space and binding pocket near the heme reveals a new subchamber that resulted from the movement of secondary structural elements and rearrangements of active-site side chains. Overall, the results from the comparison of all 16 structures of CYP2B4 demonstrate a cluster of protein conformations that were observed in the presence or absence of various ligands.
A Structural Snapshot of CYP2B4 in Complex with Paroxetine Provides Insights into Ligand Binding and Clusters of Conformational States.,Shah MB, Kufareva I, Pascual J, Zhang Q, Stout CD, Halpert JR J Pharmacol Exp Ther. 2013 Jul;346(1):113-20. doi: 10.1124/jpet.113.204776. Epub , 2013 Apr 30. PMID:23633618[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Shah MB, Kufareva I, Pascual J, Zhang Q, Stout CD, Halpert JR. A Structural Snapshot of CYP2B4 in Complex with Paroxetine Provides Insights into Ligand Binding and Clusters of Conformational States. J Pharmacol Exp Ther. 2013 Jul;346(1):113-20. doi: 10.1124/jpet.113.204776. Epub , 2013 Apr 30. PMID:23633618 doi:10.1124/jpet.113.204776
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