Reaction: a medium-chain acyl-CoA + electron-transfer flavoprotein = a medium-chain trans-2,3-dehydroacyl-CoA + reduced electron-transfer flavoprotein
Glossary: a medium-chain acyl-CoA = an acyl-CoA thioester where the acyl chain contains 6 to 12 carbon atoms.
Other name(s): fatty acyl coenzyme A dehydrogenase (ambiguous); acyl coenzyme A dehydrogenase (ambiguous); acyl dehydrogenase (ambiguous); fatty-acyl-CoA dehydrogenase (ambiguous); acyl CoA dehydrogenase (ambiguous); general acyl CoA dehydrogenase (ambiguous); medium-chain acyl-coenzyme A dehydrogenase; acyl-CoA:(acceptor) 2,3-oxidoreductase (ambiguous); ACADM (gene name).
Systematic name: medium-chain acyl-CoA:electron-transfer flavoprotein 2,3-oxidoreductase
Comments: Contains FAD as prosthetic group. One of several enzymes that catalyse the first step in fatty acids β-oxidation. The enzyme from pig liver can accept substrates with acyl chain lengths of 4 to 16 carbon atoms, but is most active with C8 to C12 compounds . The enzyme from rat does not accept C16 at all and is most active with C6-C8 compounds . cf. EC 126.96.36.199, short-chain acyl-CoA dehydrogenase, EC 188.8.131.52, long-chain acyl-CoA dehydrogenase, and EC 184.108.40.206, very-long-chain acyl-CoA dehydrogenase.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:
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6. Kim, J.J., Wang, M. and Paschke, R. Crystal structures of medium-chain acyl-CoA dehydrogenase from pig liver mitochondria with and without substrate. Proc. Natl. Acad. Sci. USA 90 (1993) 7523-7527. [PMID: 8356049]
7. Peterson, K.L., Sergienko, E.E., Wu, Y., Kumar, N.R., Strauss, A.W., Oleson, A.E., Muhonen, W.W., Shabb, J.B. and Srivastava, D.K. Recombinant human liver medium-chain acyl-CoA dehydrogenase: purification, characterization, and the mechanism of interactions with functionally diverse C8-CoA molecules. Biochemistry 34 (1995) 14942-14953. [PMID: 7578106]
8. Toogood, H.S., van Thiel, A., Basran, J., Sutcliffe, M.J., Scrutton, N.S. and Leys, D. Extensive domain motion and electron transfer in the human electron transferring flavoprotein.medium chain Acyl-CoA dehydrogenase complex. J. Biol. Chem. 279 (2004) 32904-32912. [PMID: 15159392]