Phospholipase C activity in plasma membranes isolated from lapine synovial cells in monolayer culture

Plasma membranes were isolated from lapine synovial cells grown in monolayer culture using discontinuous sucrose gradient centrifugation techniques. 5′nucleotidase was detected in great abundance while glucose-6 phosphate dehydrogenase and cytochrome oxidase were present at low to undetectable level...

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Veröffentlicht in:Biochemical and biophysical research communications 1983-08, Vol.115 (1), p.331-338
Hauptverfasser: Rothenberg, R.J., Moskowitz, R.W., Malemud, C.J.
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container_title Biochemical and biophysical research communications
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creator Rothenberg, R.J.
Moskowitz, R.W.
Malemud, C.J.
description Plasma membranes were isolated from lapine synovial cells grown in monolayer culture using discontinuous sucrose gradient centrifugation techniques. 5′nucleotidase was detected in great abundance while glucose-6 phosphate dehydrogenase and cytochrome oxidase were present at low to undetectable levels. Plasma membranes incubated at 37°C for 60 min with [3H]-arachidonyl-phosphatidylinositol/phosphatidylserine synthesized [3H]-diacylglycerides. Little if any [3H]-diacylglyceride synthesis was measured when [3H]-arachidonyl-phosphatidylcholine or [3H]-arachidonyl-phosphatidylethanolamine were used as substrates. These results are consistent with a plasma membrane-associated phosphatidylinositol-specific phospholipase C from lapine synovial cells in culture.
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source MEDLINE; Elsevier ScienceDirect Journals
subjects Animals
Cell Fractionation
Cell Membrane - enzymology
Cell Membrane - ultrastructure
Cells, Cultured
Centrifugation, Density Gradient
Female
Kinetics
phospholipase C
Phospholipases - metabolism
Rabbits
Synovial Membrane - enzymology
synovium
Type C Phospholipases - metabolism
title Phospholipase C activity in plasma membranes isolated from lapine synovial cells in monolayer culture
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