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Purification and Characterization of Cholesterol Esterase From Porcine Pancreas

W E Momsen, H L Brockman

Biochim Biophys Acta. 1976 Jan 18;486(1):103-13.

PMID: 12831

Abstract:

A protein catalyzing the hydrolysis of cholesterol esters and p-nitrophenyl acetate has been purified 200-fold from porcine pancreas. The enzyme is homogenous as judged by polyacrylamide gel electrophoresis and exhibits a molecular weight of 80 000 as determined by sodium dodecyl sulfate electrophoresis and gel filtration. Activity toward p-nitrophenylacetate exhibits a broad pH optimum and is influenced by a group with a pKa of 5.5--6.0. The enzyme is completely inhibited by diisopropylfluorophosphate at concentrations as low as 10(-5) M, suggesting that it is a serine esterase. Partial inhibition was observed with p-chloromercuribenzoate.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP9026000 Cholesterol Esterase from porcine pancreas Cholesterol Esterase from porcine pancreas 9026-00-0 Price
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