Title : Cytosolic modulators of activities of microsomal enzymes of cholesterol biosynthesis. Effects of Acyl-CoA inhibition and cytosolic Z-protein.

Pub. Date : 1983 Mar 22

PMID : 6299366






8 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 Acyl-CoA inhibition of hydroxymethylglutaryl-CoA reductase as well as methyl sterol oxidase can be either prevented or reversed by the addition of purified Z-protein (fatty acid-binding protein). Fatty Acids transmembrane BAX inhibitor motif containing 4 Homo sapiens
2 Concomitantly, Z-protein addition decreases the extent of binding of radioactively labeled oleoyl-CoA to microsomal membranes. oleoyl-coenzyme A transmembrane BAX inhibitor motif containing 4 Homo sapiens
3 Free heme also inhibits hydroxymethylglutaryl-CoA reductase, and Z-protein reverses the extent of observed inhibition by binding heme analogous to the effect observed with acyl-CoAs. Heme transmembrane BAX inhibitor motif containing 4 Homo sapiens
4 Free heme also inhibits hydroxymethylglutaryl-CoA reductase, and Z-protein reverses the extent of observed inhibition by binding heme analogous to the effect observed with acyl-CoAs. Coenzyme A transmembrane BAX inhibitor motif containing 4 Homo sapiens
5 All these observations are consistent with the suggestion that, by binding acyl-CoAs and other enzyme effectors such as free heme, Z-protein modulates the effects of fluctuations of concentrations of major cellular metabolites. Heme transmembrane BAX inhibitor motif containing 4 Homo sapiens
6 Furthermore, because the concentration of Z-protein is very low in rapidly growing hepatomas, such tumors may be very poorly buffered against the effects of acyl-CoAs, free fatty acids, heme and other effectors that may vary markedly by either altered metabolism or release of metabolites from necrotic tumor tissue. Acyl Coenzyme A transmembrane BAX inhibitor motif containing 4 Homo sapiens
7 Furthermore, because the concentration of Z-protein is very low in rapidly growing hepatomas, such tumors may be very poorly buffered against the effects of acyl-CoAs, free fatty acids, heme and other effectors that may vary markedly by either altered metabolism or release of metabolites from necrotic tumor tissue. Fatty Acids, Nonesterified transmembrane BAX inhibitor motif containing 4 Homo sapiens
8 Furthermore, because the concentration of Z-protein is very low in rapidly growing hepatomas, such tumors may be very poorly buffered against the effects of acyl-CoAs, free fatty acids, heme and other effectors that may vary markedly by either altered metabolism or release of metabolites from necrotic tumor tissue. Heme transmembrane BAX inhibitor motif containing 4 Homo sapiens