using similar numbers of wheat germ agglutinin-agarose ( wga ) -purified insulin receptors with similar affinities for insulin , it was found that basal and insulin-stimulated phosphorylation of the synthetic tyrosine-specific kinase substrate poly ( glu , tyr ) 4:1 was similar in lean and obese rats fed sucrose or starch .
C0031715
phosphorylation
C0033681
tyrosine