Acyl carrier protein synthases (ACPS) are members of the family of phosphopantethienyl transferases responsible for the conversion of the inactive apo-Acyl carrier protein from fatty acid or polyketide biosynthesis into the active holo form through the post-translational addition of a 4'-phosphopantethiene chain derived from coenzyme A.
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Acyl carrier protein synthase Wikipedia(Text) CC BY-SA