Fatty acid synthesis in intestinal mucosa of guinea pig

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Abstract
1. Acetate–CoA ligase, acetyl-CoA–carbon dioxide ligase and fatty acid synthetase were shown to be present in particle-free fractions of guinea-pig intestinal mucosa. 2. Each of these enzymes was partially purified by ammonium sulphate precipitation from the particle-free supernatant. 3. The incorporation of acetate and citrate into fatty acid was measured. 4. Gas–liquid radiochromatography was used to investigate the pattern of fatty acids synthesized. 5. The rate-limiting step in fatty acid synthesis was shown to be acetyl-CoA–carbon dioxide ligase.