Molecular function

Catalysis of the reaction: an (omega-1)-ethyl long-chain fatty acid + O2 + reduced [NADPH-hemoprotein reductase] = an (omega-1)-hydroxy-long-chain fatty acid + H+ + H2O + oxidized [NADPH-hemoprotein reductase. A long-chain fatty acid has an aliphatic tail containing 13 to 22 carbons.

cytochrome P450 fatty acid omega-1 hydroxylase activity

While there is not universal consensus on the lengths of short-, medium-, long- and very-long-chain fatty acids, the GO uses the definitions in ChEBI (see CHEBI:26666, CHEBI:59554, CHEBI:15904 and CHEBI:27283).