sodium dodecylsulfate-polyacrylamide gel electrophoresis and subsequent autoradiography of [ 125i-tyr11 ] s-14 and [ leu8 , d-trp22 , 125i-tyr25 ] s-28 cross-linked to their binding sites following solubilization in the presence of 50 mm dtt revealed the presence of a single labelled protein of mr = 200,000 .
C0037659
s-14
C0074854
s-28