3mde: Difference between revisions
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[[Image:3mde.jpg|left|200px]] | [[Image:3mde.jpg|left|200px]] | ||
'''CRYSTAL STRUCTURES OF MEDIUM CHAIN ACYL-COA DEHYDROGENASE FROM PIG LIVER MITOCHONDRIA WITH AND WITHOUT SUBSTRATE''' | {{Structure | ||
|PDB= 3mde |SIZE=350|CAPTION= <scene name='initialview01'>3mde</scene>, resolution 2.4Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=CO8:OCTANOYL-COENZYME+A'>CO8</scene> and <scene name='pdbligand=FAD:FLAVIN-ADENINE DINUCLEOTIDE'>FAD</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Acyl-CoA_dehydrogenase Acyl-CoA dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.3.99.3 1.3.99.3] | |||
|GENE= | |||
}} | |||
'''CRYSTAL STRUCTURES OF MEDIUM CHAIN ACYL-COA DEHYDROGENASE FROM PIG LIVER MITOCHONDRIA WITH AND WITHOUT SUBSTRATE''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
3MDE is a [ | 3MDE is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MDE OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structures of medium-chain acyl-CoA dehydrogenase from pig liver mitochondria with and without substrate., Kim JJ, Wang M, Paschke R, Proc Natl Acad Sci U S A. 1993 Aug 15;90(16):7523-7. PMID:[http:// | Crystal structures of medium-chain acyl-CoA dehydrogenase from pig liver mitochondria with and without substrate., Kim JJ, Wang M, Paschke R, Proc Natl Acad Sci U S A. 1993 Aug 15;90(16):7523-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8356049 8356049] | ||
[[Category: Acyl-CoA dehydrogenase]] | [[Category: Acyl-CoA dehydrogenase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: oxidoreductase]] | [[Category: oxidoreductase]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 19:05:57 2008'' | ||
Revision as of 20:06, 20 March 2008
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| , resolution 2.4Å | |||||||
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| Ligands: | and | ||||||
| Activity: | Acyl-CoA dehydrogenase, with EC number 1.3.99.3 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURES OF MEDIUM CHAIN ACYL-COA DEHYDROGENASE FROM PIG LIVER MITOCHONDRIA WITH AND WITHOUT SUBSTRATE
OverviewOverview
The three-dimensional structure of medium-chain acyl-CoA dehydrogenase from pig mitochondria in the native form and that of a complex of the enzyme and a substrate (product) have been solved and refined by x-ray crystallographic methods at 2.4-A resolution to R factors of 0.172 and 0.173, respectively. The overall polypeptide folding and the quaternary structure of the tetramer are essentially unchanged upon binding of the ligand, octanoyl (octenoyl)-CoA. The ligand binds to the enzyme at the rectus (re) face of the FAD in the crevice between the two alpha-helix domains and the beta-sheet domain of the enzyme. The fatty acyl chain of the thioester substrate is buried inside of the polypeptide and the 3'-AMP moiety is close to the surface of the tetrameric enzyme molecule. The alkyl chain displaces the tightly bound water molecules found in the native enzyme and the carbonyl oxygen of the thioester interacts with the ribityl 2'-hydroxyl group of the FAD and the main-chain carbonyl oxygen of Glu-376. The C alpha--C beta of the fatty acyl moiety lies between the flavin and the gamma-carboxylate of Glu-376, supporting the role of Glu-376 as the base that abstracts the alpha proton in the alpha--beta dehydrogenation reaction catalyzed by the enzyme. Trp-166 and Met-165 are located at the sinister (si) side of the flavin ring at the surface of the enzyme, suggesting that they might be involved in the interactions with electron transferring flavoprotein. Lys-304, the prevalent mutation site found in patients with medium-chain acyl-CoA dehydrogenase deficiency, is located approximately 20 A away from the active site of the enzyme.
About this StructureAbout this Structure
3MDE is a Single protein structure of sequence from Sus scrofa. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structures of medium-chain acyl-CoA dehydrogenase from pig liver mitochondria with and without substrate., Kim JJ, Wang M, Paschke R, Proc Natl Acad Sci U S A. 1993 Aug 15;90(16):7523-7. PMID:8356049
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