Proposed carbon flow of n-alkanes in Acinetobacter sp. strain M-1. Enzymes: 1, aldehyde dehydrogenase; 2, acyl-CoA synthetase; 3, acyl-CoA:ACP transacylase; 4, acyl-CoA dehydrogenase; 5, acyl-CoA reductase; 6, aldehyde reductase; 7, acyl-CoA:alcohol transacylase. R, acyl group; ACP, acyl carrier protein.