Linked Life Data

2127276

Source:http://linkedlifedata.com/resource/pubmed/id/2127276

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1991-4-8
pubmed:abstractText
We have previously reported the isolation of two forms of cytochrome P-450 (P-450) with omega-hydroxylase activities toward prostaglandin A (PGA) and fatty acids, designated as P-450ka-1 and P-450ka-2, from kidney cortex microsomes of rabbits treated with di(2-ethylhexyl)phthalate [Kusunose, E. et al. (1989) J. Biochem. 106, 194-196]. In the present work, we have purified and characterized two additional forms of rabbit kidney fatty acid omega-hydroxylase, designated as P-450kc and P-450kd. The purified P-450kc and P-450kd had specific contents of 13 and 16 nmol of P-450/mg of protein, with apparent molecular weights of 52,000 and 55,000 on sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), respectively. Both the forms showed absorption maxima at 450 nm in the carbon monoxide-difference spectra for their reduced forms. These P-450s efficiently catalyzed the omega- and (omega-1)-hydroxylation of fatty acids such as caprate, laurate, myristate, and palmitate, in a reconstituted system containing P-450, NADPH-P-450 reductase, and phosphatidylcholine. Cytochrome b5 stimulated the reactions to only a slight extent. They had no detectable activity toward PGA and several xenobiotics tested. The two P-450s showed different peptide map patterns after limited proteolysis with papain or Staphylococcus aureus V8 protease.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0021-924X
pubmed:author
pubmed:issnType
Print
pubmed:volume
108
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
544-8
pubmed:dateRevised
2007-12-19
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Purification and characterization of two forms of fatty acid omega-hydroxylase cytochrome P-450 from rabbit kidney cortex microsomes.
pubmed:affiliation
Toneyama Institute for Tuberculosis Research, Osaka City University Medical School.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't