4.2.1.-

2-vinyl bacteriochlorophyllide hydratase (RefSeq)
Beta-hydroxyacyl-(acyl-carrier-protein) dehydratase (RefSeq)
putative beta-hydroxyacyl-(acyl-carrier-protein) dehydratase (FabZ-like) (RefSeq)
Mesaconyl-CoA hydratase (RefSeq)