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beta-hydroxyacyl-[acyl carrier protein] dehydratase FabA This enzyme, FabA, shows overlapping substrate specificity with FabZ with regard to chain length in fatty acid biosynthesis. It is commonly designated 3-hydroxydecanoyl-[acyl-carrier-protein] dehydratase (EC 4.2.1.60) as if it were specific for that chain length, but its specificity is broader; it is active even in the initiation of fatty acid biosynthesis. This enzyme can also isomerize trans-2-decenoyl-ACP to cis-3-decenoyl-ACP to bypass reduction by FabI and instead allow biosynthesis of unsaturated fatty acids. FabA cannot elongate unsaturated fatty acids. [Fatty acid and phospholipid metabolism, Biosynthesis]
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Jiyao W et al.(2023). "The conserved domain database in 2023.",