1pq2
From Proteopedia
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|PDB= 1pq2 |SIZE=350|CAPTION= <scene name='initialview01'>1pq2</scene>, resolution 2.7Å | |PDB= 1pq2 |SIZE=350|CAPTION= <scene name='initialview01'>1pq2</scene>, resolution 2.7Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PLM:PALMITIC+ACID'>PLM</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene> |
| - | |ACTIVITY= [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] | + | |ACTIVITY= <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> |
|GENE= CYP2C8 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | |GENE= CYP2C8 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1dt6|1DT6]], [[1n6b|1N6B]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1pq2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pq2 OCA], [http://www.ebi.ac.uk/pdbsum/1pq2 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1pq2 RCSB]</span> | ||
}} | }} | ||
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[[Category: Wester, M R.]] | [[Category: Wester, M R.]] | ||
[[Category: Yano, J K.]] | [[Category: Yano, J K.]] | ||
| - | [[Category: HEM]] | ||
| - | [[Category: PLM]] | ||
| - | [[Category: PO4]] | ||
[[Category: cyp2c8]] | [[Category: cyp2c8]] | ||
[[Category: cytochrome p450]] | [[Category: cytochrome p450]] | ||
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[[Category: taxol 6-hydroxylase]] | [[Category: taxol 6-hydroxylase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:03:00 2008'' |
Revision as of 20:03, 30 March 2008
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| , resolution 2.7Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , | ||||||
| Gene: | CYP2C8 (Homo sapiens) | ||||||
| Activity: | Unspecific monooxygenase, with EC number 1.14.14.1 | ||||||
| Related: | 1DT6, 1N6B
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of Human Drug Metabolizing Cytochrome P450 2C8
Overview
A 2.7-Angstrom molecular structure of human microsomal cytochrome P450 2C8 (CYP2C8) was determined by x-ray crystallography. The membrane protein was modified for crystallization by replacement of the hydrophobic N-terminal transmembrane domain with a short hydrophilic sequence before residue 28. The structure of the native sequence is complete from residue 28 to the beginning of a C-terminal histidine tag used for purification. CYP2C8 is one of the principal hepatic drug-metabolizing enzymes that oxidizes therapeutic drugs such as taxol and cerivastatin and endobiotics such as retinoic acid and arachidonic acid. Consistent with the relatively large size of its preferred substrates, the active site volume is twice that observed for the structure of CYP2C5. The extended active site cavity is bounded by the beta1 sheet and helix F' that have not previously been implicated in substrate recognition by mammalian P450s. CYP2C8 crystallized as a symmetric dimer formed by the interaction of helices F, F', G', and G. Two molecules of palmitic acid are bound in the dimer interface. The dimer is observed in solution, and mass spectrometry confirmed the association of palmitic acid with the enzyme. This novel finding identifies a peripheral binding site in P450s that may contribute to drug-drug interactions in P450 metabolism.
About this Structure
1PQ2 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structure of human microsomal cytochrome P450 2C8. Evidence for a peripheral fatty acid binding site., Schoch GA, Yano JK, Wester MR, Griffin KJ, Stout CD, Johnson EF, J Biol Chem. 2004 Mar 5;279(10):9497-503. Epub 2003 Dec 15. PMID:14676196
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