Metabolism of N-acylethanolamine phospholipids by a mammalian phosphodiesterase of the phospholipase D type.
摘要:
Rat heart contains a membrane-bound phosphodiesterase of the phospholipase D type which catalyzes the hydrolysis of 1,2-diacyl-sn-glycero-3-phospho(N-acyl)ethanolamine to N-acylethanolamine and phosphatidic acid. The enzyme also hydrolyzes the corresponding alkenylacylglycerophospho(N-acyl)ethanolamine and N-acylethanolamine lysophospholipids but not phosphatidylcholine or phosphatidylethanolamine. The activity is highest in the microsomal fraction, does not require Ca2+ or Mg2+, and is stimulated by Triton X-100. Bile salts, other ionic detergents, and Zn2+ are inhibitory. Hydrolysis occurs over a wide pH range, with the activity at acid pH being stimulated by freezing and thawing. Other rat tissues also release N-acylethanolamine from N-acylethanolamine phospholipids.
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DOI:
10.1016/S0021-9258(17)44667-9
被引量:
年份:
1983
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