Very-long-chain enoyl-CoA reductase (, TSC13 (gene name), CER10 (gene)) is an enzyme with systematic name very-long-chain acyl-CoA:NADP<sup>+</sup> oxidoreductase. This enzyme catalyses the following chemical reaction
This is the fourth component of the elongase, a microsomal protein complex responsible for extending palmitoyl-CoA and stearoyl-CoA.