β-Hydroxydecanoylthioester dehydrase. Steric course at substrate C-2 and overall steric course of the enzyme–catalysed allylic rearrangement
Abstract
β-Hydroxydecanoylthioester dehydrase (Escherichia coli)catalyses the addition of a proton to the si face at C-2 of the N-acetylcysteinamine thioester of E-dec-2-enoic acid in isomerzing this substance to the corresponding Z-dec-3-enoic acid thioester with the result that the overall steric course of the allylic rearrangement is suprafacial.