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Title: Rapid purification of enzymes of fatty acid biosynthesis from rat adipose tissue. Author: Ramakrishna S, Benjamin WB. Journal: Prep Biochem; 1983; 13(5):475-88. PubMed ID: 6142454. Abstract: Acetyl CoA carboxylase, ATP-citrate lyase and fatty acid synthetase were purified to homogeneity by a simple procedure. The purification method consists of polymerization of acetyl CoA carboxylase with citrate followed by avidin-Sepharose affinity chromatography. ATP-citrate lyase and fatty acid synthetase were isolated as by-products of acetyl CoA carboxylase purification and are separated from each other by chromatography on DE-52. ATP-citrate lyase was further purified by CoA-agarose affinity chromatography and fatty acid synthetase was purified on Bio-Gel A-1.5m. Purified ATP-citrate lyase, acetyl CoA carboxylase and fatty acid synthetase had specific activities of 9.9, 2.8 and 1.8 U/mg respectively with an over all recovery of 30, 25 and 50% respectively. Using these purified enzymes, we found that ATP-citrate lyase and acetyl CoA carboxylase were phosphorylated in vitro by both cAMP-dependent protein kinase and ATP-citrate lyase kinase whereas fatty acid synthetase was not phosphorylated by these protein kinases.[Abstract] [Full Text] [Related] [New Search]