Tyrosine-specific protein kinase activity associated with p105 of avian sarcoma virus PRCII.
Tyrosine-specific protein kinase activity associated with p105 of avian sarcoma virus PRCII.
复制标题
与禽肉瘤病毒 PRCII 的 p105 相关的酪氨酸特异性蛋白激酶活性。
DOI:
10.1016/0042-6822(81)90493-1
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发表时间:
1981
期刊:
影响因子:
3.7
通讯作者:
Vogt,PK
中科院分区:
文献类型:
--
作者:
Neil,JC;Ghysdael,J;Vogt,PK
A protein kinase activity was found to be associated with the transformation-specific polyprotein (p105) of avian sarcoma virus PRCII. The kinase was detected in immune complexes with antisera reactive with thegagsequences of p105. Addition of [γ-32P]ATP to these complexes resulted in phosphorylation of p105 and, with some sera, phosphorylation of immunoglobulin heavy chain. Phosphoamino acid analysis showed that phosphotyrosine was the major product of thein vitrokinase reaction and the major phosphoamino acid of p105 extracted from32P-labeled cells. The same tryptic peptides of p105 were found to be labeled by thein vitrokinase reaction and by32P labeling of PRCII-transformed cells. These phosphopeptides were not found in Pr76gagThus, like Rous sarcoma virus, PRCII has an associated tyrosine-specific protein kinase which may be responsible for its transforming activity.
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