The 3-hydroxyacyl-CoA dehydratases HACD1 and HACD2 exhibit functional redundancy and are active in a wide range of fatty acid elongation pathways.
Sawai M, Uchida Y, Ohno Y, Miyamoto M, Nishioka C, Itohara S, Sassa T, Kihara A. J Biol Chem. 2017 Sep 15; 292(37):15538-15551. Epub 2017 Aug 7.