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  • Title: Studies on triglyceride lipases from rat adipose tissue.
    Author: Matsumura S, Matsuda T, Matsuo M, Kumon A, Sudo K.
    Journal: J Biochem; 1976 Aug; 80(2):351-9. PubMed ID: 12145.
    Abstract:
    A new assay procedure for triglyceride lipase [EC 3.1.1.3] was developed in which radioactive triolein was dissolved in ethanol and directly added to the reaction mixture in the absence of serum and albumin. In the rat adipose tissue there appeared to be a triglyceride lipase measurable with this assay in addition to the two previously defined lipases, lipoprotein lipase [EC 3.1.1.34] and hormone-sensitive lipase. The enzyme was active in the absence of serum and was strongly inhibited by albumin. The molecular weight was estimated to be about 42,000. Adenosine 3',5'-monophosphate-dependent protein kinase [EC 2.7.1.27] was unable to activate the enzyme. The three species of lipases mentioned above behaved differently upon chromatography on a Sepharose 4B column, and were distinguishable from each other in their physical and kinetic properties. The physiological roles of the new species of lipase remain to be explored.
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