a 2,3-saturated acyl-CoA + FAD + H(+) => a (2E)-enoyl-CoA + FADH2
a 2,3-saturated acyl-coa + fad + h(+) => a (2e)-enoyl-coa + fadh2
a 2,3-saturated acyl-CoA + FAD + H(+) => a (2E)-enoyl-CoA + FADH2
a 2,3-saturated acyl-coa + fad + h(+) => a (2e)-enoyl-coa + fadh2