(3R)-hydroxybutanoyl-[ACP] => (2E)-butenoyl-[ACP] + H2O
(3r)-hydroxybutanoyl-[acp] => (2e)-butenoyl-[acp] + h2o
(3R)-hydroxybutanoyl-[ACP] => (2E)-butenoyl-[ACP] + H2O
(3r)-hydroxybutanoyl-[acp] => (2e)-butenoyl-[acp] + h2o