Figure 5.
Identification of phosphoamino acids in the β subunit of the highly purified insulin receptor preparation. The purified receptor was incubated with [γ-32P]ATP in the absence or presence of 0.1 µM insulin for 30 min and then subjected to hydrolysis for analysis of phosphoamino acids by two-dimensional electrophoresis and autoradiography. Modified with permission from ref. 25.