Linked Life Data

6786332

Source:http://linkedlifedata.com/resource/pubmed/id/6786332

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1981-8-27
pubmed:abstractText
NADPH-cytochrome P-450 reductase (EC 1.6.2.4) preparations were purified to electrophoretic homogeneity from rat, rabbit, and human liver microsomes. These preparations had apparent monomer molecular weights (Mr's) of 72 000-74 000 and were catalytically active in reducing rat and rabbit liver cytochromes P-450 as well as cytochrome c. A form of the human liver reductase devoid of a peptide of about Mr 6000 was isolated in the absence of protease inhibitors; this enzyme catalyzed the reduction of cytochrome c but not cytochromes P-450. Rabbits were immunized with purified rat liver NADPH-cytochrome P-450 reductase and the resulting antibody preparation was used to examine the species specificity of the enzyme. Immunological differences among the three species were detected by using double-diffusion analysis, quantitative microcomplement fixation, and inhibition of enzyme activity. Microcomplement fixation techniques indicated immunological differences in both rat and human reductase preparations due to removal of a peptide of Mr 6000-8000; these differences were not detected by using double-diffusion analysis. The antibody inhibited rat liver microsomal d-benzphetamine N-demethylase activity to the same extent as NADPh-cytochrome c reductase activity, suggesting that the level of reductase controls the rate of this cytochrome P-450-mediated activity. On the other hand, the antibody was much less effective in inhibiting rat liver benzo[a]pyrene hydroxylase activity. The antibody exerted different effects in inhibiting d-benzphetamine N-demethylase and benzo[a]pyrene hydroxylase activities as compared to NADPH-cytochrome c reductase activity in human liver microsomes.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
28
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2379-85
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
Immunological comparison of rat, rabbit, and human liver NADPH-cytochrome P-450 reductases.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.