Expression of wild-type SHP1 had a very small effect on the TCR-induced tyrosine phosphorylation of ZAP-70 and Syk , even when SHP1 was overexpressed 20 - 100-fold over endogenous SHP1 .
expression of wild-type shp1 had a very small effect on the tcr-induced tyrosine phosphorylation of zap-70 and syk , even when shp1 was overexpressed 20 - 100-fold over endogenous shp1 .
O O B-protein_molecule B-protein_molecule O O O O O O O B-other_name B-amino_acid_monomer O O B-protein_molecule O B-protein_molecule O O O B-protein_molecule O O O O O O B-protein_molecule B-protein_molecule O