Antibody to the nonapeptide Glu-Glu-Glu-Glu-Tyr-Met-Pro-Met-Glu is specific for polyoma middle T antigen and inhibits in vitro kinase activity

Autor: B, Schaffhausen, T L, Benjamin, L, Pike, J, Casnellie, E, Krebs
Rok vydání: 1982
Předmět:
Zdroj: The Journal of biological chemistry. 257(21)
ISSN: 0021-9258
Popis: Middle T antigen of polyoma virus has an associated tyrosine kinase activity which phosphorylates tyrosine residue 315 on middle T in immunoprecipitates. A peptide representing the sequence of middle T from residue 311 to 319 has been synthesized. This peptide acts as a weak inhibitor of the kinase reaction. An antiserum has been raised against this peptide after conjugation to bovine serum albumin. The antibody is middle T-specific. Middle T antigen precipitated by this serum is largely inactive in the kinase reaction. Dissociation of the immune complex with peptide releases middle T in a kinase-active form.
Databáze: OpenAIRE