The function of PECR (peroxisomal trans-2-enoyl-CoA reductase, ENSG00000115425) is as follows. Participates in chain elongation of fatty acids. Catalyzes the reduction of trans-2-enoyl-CoAs of varying chain lengths from 6:1 to 16:1, having maximum activity with 10:1 CoA. Has no 2,4-dienoyl-CoA reductase activity. .