| Literature DB >> 2415976 |
T Grussenmeyer, K H Scheidtmann, M A Hutchinson, W Eckhart, G Walter.
Abstract
Antibodies against synthetic peptides corresponding to the carboxyl-terminal six amino acids, Lys-Arg-Ser-Arg-His-Phe (KF), and an internal region, Glu-Glu-Glu-Glu-Tyr-Met-Pro-Met-Glu (EE), of polyoma virus medium T antigen were used successively to purify medium T antigen by affinity chromatography. Medium T antigen from cell extracts was first bound to anti-KF antibodies and released from the immune complex with excess KF peptide; then it was bound to anti-EE antibodies and released with excess EE peptide. Two proteins, pp60c-src and a new protein of approximately equal to 61,000 Da (61-kDa protein), were copurified because they formed complexes with medium T antigen. The 61-kDa protein-medium T antigen complex was detected in extracts from wild-type-infected and transformed cells but not from cells infected with NG59 virus, which has a mutation in the medium T gene and is transformation defective. Instead, NG59 medium T antigen formed a complex with another cellular protein of approximately equal to 72,000 Da.Entities:
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Year: 1985 PMID： 2415976 PMCID： PMC390888 DOI： 10.1073/pnas.82.23.7952
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205