The N-terminal domain of Acyl-CoA dehydrogenase is an all-alpha domain.

1: Three-dimensional structure of butyryl-CoA dehydrogenase from Megasphaera elsdenii. Djordjevic S, Pace CP, Stankovich MT, Kim JJ; Biochemistry. 1995;34:2163-2171. PMID:7857927

2: 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;90:7523-7527. PMID:8356049