((9Z)-hexadecenoyl-tetradecanoyl)-(Kdo)2-lipid A + holo-[ACP] => (9Z)-hexadecenoyl-(Kdo)2-lipid IVA (E. coli) + tetradecanoyl-[ACP]
((9z)-hexadecenoyl-tetradecanoyl)-(kdo)2-lipid a + holo-[acp] => (9z)-hexadecenoyl-(kdo)2-lipid iva (e. coli) + tetradecanoyl-[acp]