MICROTUBULE-ASSOCIATED PROTEIN-1A IS THE FIBROBLAST HMW MAP UNDERGOING MITOGEN-STIMULATED SERINE PHOSPHORYLATION

被引:9
作者
ERICKSON, AK
RAY, LB
STURGILL, TW
机构
[1] UNIV VIRGINIA,SCH MED,DEPT MED,CHARLOTTESVILLE,VA 22908
[2] UNIV VIRGINIA,SCH MED,DEPT PHARMACOL,CHARLOTTESVILLE,VA 22908
关键词
D O I
10.1016/0006-291X(90)90884-P
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A variety of antibodies to microtubule-associated protein (MAP) have been used to demonstrate that phosphorylation of a 350 kDa microtubule-associated protein is stimulated 2-3 fold by epidermal growth factor or serum in quiescent 3T3-L1 fibroblasts and by insulin in 3T3-L1 adipocytes. Phosphorylation occurs on serine residues, and is maximal by 15-20 min. The phosphoprotein has been identified as MAP1A by specific immunoprecipitation with a well-characterized monoclonal antibody. © 1990.
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页码:827 / 832
页数:6
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