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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1985-3-21
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pubmed:abstractText |
NADH-cytochrome b5 reductase from hog gastric microsomes was studied with respect to substrate dependence, optimum pH, thermal denaturation as well as anti-cytochrome b5 antibodies and different ions. The reduction of potassium ferricyanide by the enzyme was specific for NADH. Using potassium ferricyanide or trypsin-solubilized liver cytochrome b5 (Tb5) as substrates, enzyme activity was inhibited by ADP and to a lesser extent by ATP. Tb5- (but not ferricyanide-) reductase was activated by ionic strength up to 0.05 ion equivalent per liter and inhibited at higher strengths whatever the ion used (Cl-, Na+, Ca2+, Mg2+). Enzyme solubilization occurred with Triton X100. The solubilization increased the Tb5- (but not the ferricyanide-) reductase activity up to a Triton:protein ratio of 15. We therefore suggest that gastric microsomes contain a Triton soluble membrane-bound NADH cytochrome b5 reductase which is in many respects similar to the liver and red cell enzymes.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Cytochrome Reductases,
http://linkedlifedata.com/resource/pubmed/chemical/Cytochrome-B(5) Reductase,
http://linkedlifedata.com/resource/pubmed/chemical/Ferricyanides,
http://linkedlifedata.com/resource/pubmed/chemical/Octoxynol,
http://linkedlifedata.com/resource/pubmed/chemical/Polyethylene Glycols,
http://linkedlifedata.com/resource/pubmed/chemical/potassium ferricyanide
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pubmed:status |
MEDLINE
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pubmed:issn |
0305-0491
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
80
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
165-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3967486-Animals,
pubmed-meshheading:3967486-Cytochrome Reductases,
pubmed-meshheading:3967486-Cytochrome-B(5) Reductase,
pubmed-meshheading:3967486-Ferricyanides,
pubmed-meshheading:3967486-Microsomes,
pubmed-meshheading:3967486-Octoxynol,
pubmed-meshheading:3967486-Polyethylene Glycols,
pubmed-meshheading:3967486-Solubility,
pubmed-meshheading:3967486-Stomach,
pubmed-meshheading:3967486-Substrate Specificity,
pubmed-meshheading:3967486-Swine
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pubmed:year |
1985
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pubmed:articleTitle |
Gastric microsomal NADH-cytochrome b5 reductase: characterization and solubilization.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
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