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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1996-10-10
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pubmed:abstractText |
The purified enzyme hydrolyzed cholesteryl oleate, cholesteryl linoleate, and triolein at similar rates over a broad range of concentrations. Hydrolytic activity was relatively low with p-nitrophenyl acetate, but much higher with PNP-esters of the more lipophilic C4-C18 fatty acids, in sharp contrast to microsomal esterases which hydrolyze PNP-acetate more efficiently. Zn2+, Cu2+, Cd2+, Hg2+, and phenylmethylsulfonyl fluoride inhibited, whereas N-ethyl maleimide and iodoacetamide stimulated activity of the pure enzyme. Limited trypsin digestion selectively inhibited cholesteryl esterase activity with retention of activity toward PNP-octanoate, suggesting involvement of a trypsin-labile loop in the lipophilic substrate binding pocket.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0006-291X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
14
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pubmed:volume |
225
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
413-9
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pubmed:dateRevised |
2007-11-15
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pubmed:meshHeading |
pubmed-meshheading:8753777-Animals,
pubmed-meshheading:8753777-Catalysis,
pubmed-meshheading:8753777-Cholesterol Esters,
pubmed-meshheading:8753777-Cytosol,
pubmed-meshheading:8753777-Enzyme Activation,
pubmed-meshheading:8753777-Enzyme Inhibitors,
pubmed-meshheading:8753777-Hydrolysis,
pubmed-meshheading:8753777-Liver,
pubmed-meshheading:8753777-Male,
pubmed-meshheading:8753777-Rats,
pubmed-meshheading:8753777-Rats, Sprague-Dawley,
pubmed-meshheading:8753777-Sterol Esterase,
pubmed-meshheading:8753777-Substrate Specificity,
pubmed-meshheading:8753777-Taurocholic Acid
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pubmed:year |
1996
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pubmed:articleTitle |
Catalytic properties of the purified rat hepatic cytosolic cholesteryl ester hydrolase.
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pubmed:affiliation |
Department of Biochemistry and Molecular Biophysics, Virginia Commonwealth University, Richmond 23298-0614, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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