Abstract
A procedure for the purification of carboxyl ester lipase from human pancreas has been developed. The determined N-terminal 10 amino acid residues of the purified enzyme, NH2-Ala-Lys-Leu-Gly-Ala-Val-Tyr-Thr-Glu-Gly, was identical to the terminal of human milk bile salt-activated lipase. The human pancreatic carboxyl ester lipase has an apparent molecular weight slightly smaller than that of human milk bile salt-activated lipase (105,000 vs 125,000) as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Thus, it is possible that the human pancreatic carboxyl ester lipase and human milk bile salt-activated lipase could be produced by the same gene by a different splice or post-translational modification. Alternatively, they could simply be the products of two closely related but separate genes.
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