Enoyl-CoA hydratase, mitochondrial (ECHS1)

Straight-chain enoyl-CoA thioesters from C4 up to at least C16 are processed, although with decreasing catalytic rate. Has high substrate specificity for crotonyl-CoA and moderate specificity for acryloyl-CoA, 3-methylcrotonyl-CoA and methacrylyl-CoA.

It is notable that binds tiglyl-CoA, but hydrates just a small quantity of this substrate. .