Title : Solvent isotope effects for lipoprotein lipase catalyzed hydrolysis of water-soluble p-nitrophenyl esters.

Pub. Date : 1985 Jun 18

PMID : 4027237






4 Functional Relationships(s)
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1 Solvent deuterium isotope effects on the rates of lipoprotein lipase (LpL) catalyzed hydrolysis of the water-soluble esters p-nitrophenyl acetate (PNPA) and p-nitrophenyl butyrate (PNPB) have been measured and fall in the range 1.5-2.2. Esters lipoprotein lipase Homo sapiens
2 Solvent deuterium isotope effects on the rates of lipoprotein lipase (LpL) catalyzed hydrolysis of the water-soluble esters p-nitrophenyl acetate (PNPA) and p-nitrophenyl butyrate (PNPB) have been measured and fall in the range 1.5-2.2. Esters lipoprotein lipase Homo sapiens
3 Acta 711, 386-390], inhibits LpL-catalyzed hydrolysis of PNPB, with Ki = 6.9 microM at pH 7.36, 25 degrees C. This result and the solvent isotope effects for LpL-catalyzed hydrolysis of water-soluble esters are interpreted in terms of a proton transfer mechanism that is similar in many respects to that of the serine proteases. Esters lipoprotein lipase Homo sapiens
4 Acta 711, 386-390], inhibits LpL-catalyzed hydrolysis of PNPB, with Ki = 6.9 microM at pH 7.36, 25 degrees C. This result and the solvent isotope effects for LpL-catalyzed hydrolysis of water-soluble esters are interpreted in terms of a proton transfer mechanism that is similar in many respects to that of the serine proteases. Esters lipoprotein lipase Homo sapiens