Linked Life Data

66234

Source:http://linkedlifedata.com/resource/pubmed/id/66234

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1977-5-27
pubmed:abstractText
Three forms of the RNA-dependent DNA polymerase were isolated from highly purified avian sarcoma virus B77 grown in duck embryo fibroblasts, using sequential chromatography on DEAE-cellulose, phosphocellulose, and poly(U)-cellulose. One form, which sedimented with about 5.2 S, contained only one species of polypeptide, with a molecular weight of 63,000; a second sedimented with about 7.8 S and contained only one species of polypeptide with a molecular weight of 81,000; and a third form, which sedimented with about 7.3 S, contained two species of polypeptides with molecular weights of 63,000 and 81,000. The molecular constitution of the three enzyme forms were therefore alpha, beta2, and alphabeta. All three possessed almost the same specific activity with poly(rA)-oligo(dT) as the primer-template. Forms alpha and alphabeta of avian sarcoma virus DNA polymerase have already been described in the literature; form beta2 is a new form. All three forms possessed ribonuclease H activity, the relative specific activities of the alpha, beta2, and alphabeta forms being about 1:4:5. All three enzyme forms were inhibited by antiserum to the alphabeta form, but whereas the alpha and alphabeta forms could be inhibited about 95%, the maximum degree of inhibition of the beta2 form was about 80%. The three enzyme forms also differed with respect to heat stability at 46 degrees, the monomeric alpha form of the enzyme being only about one-half as stable as the two dimeric forms.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
252
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2281-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1977
pubmed:articleTitle
RNA-dependent DNA polymerase of avian sarcoma virus B77. I. Isolation and partial characterization of the alpha, beta2, and alphabeta forms of the enzyme.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.