Induction of a novel long-chain acyl-CoA hydrolase in rat liver by administration of peroxisome proliferators
- PMID: 6115749
- DOI: 10.1111/j.1432-1033.1981.tb06356.x
Induction of a novel long-chain acyl-CoA hydrolase in rat liver by administration of peroxisome proliferators
Abstract
The activity of long-chain acyl-CoA hydrolase in rat liver was increased by the administration of peroxisome proliferators, such as ethyl p-chlorophenoxyisobutyrate, di(2-ethylhexyl)phthalate or acetylsalicylic acid. The induced activity was mainly confined in the soluble fluid after the subcellular fractionation. The enzyme was purified nearly to homogeneity from livers of rats treated with di(2-ethylhexyl)phthalate. The specific activity of the final preparation was 247 mumol palmitoyl-CoA hydrolyzed min-1 mg protein-1. The molecular weight of the native enzyme was estimated to be 150 000 by gel filtration and that of the subunits was 41 000 by sodium dodecyl sulfate/polyacrylamide gel electrophoresis. The activity of the enzyme was not increased but inhibited by bovine serum albumin or Triton X-100. The molecular and catalytic properties of the enzyme suggest that the induced enzyme was different from mitochondrial and microsomal long-chain acyl-CoA hydrolyses in liver.
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