THE TYROSINE KINASE-ACTIVITY OF P56LCK IS INCREASED IN HUMAN T-CELLS ACTIVATED VIA CD2

被引：75
|
作者：
DANIELIAN, S [1 ]
FAGARD, R [1 ]
ALCOVER, A [1 ]
ACUTO, O [1 ]
FISCHER, S [1 ]
机构：
[1] INST PASTEUR,IMMUNOL MOLEC LAB,F-75724 PARIS 15,FRANCE
来源：
EUROPEAN JOURNAL OF IMMUNOLOGY | 1991年 / 21卷 / 08期
关键词：
D O I：
10.1002/eji.1830210828
中图分类号：
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号：
100102 ;
摘要：
An early biochemical event associated with T cell activation is tyrosine phosphorylation. We have previously shown that p56lck, a lymphocyte-specific protein tyrosine kinase, is hyperphosphorylated on serine and tyrosine residues 15 minutes after activation via CD2 with a concomitant shift to a higher molecular mass. We now demonstrate that the tyrosine kinase activity of p56lck is increased within seconds following CD2 triggering. This activity decreases thereafter correlating with the appearance of changes in phosphorylation previously described. These results suggest that p56lck may play an important role in the CD2 activation pathway.
引用
收藏
页码：1967 / 1970
页数：4
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