Binding of Hormone to a Receptor Tyrosine Kinase Causes All

Question

Binding of hormone to a receptor tyrosine kinase causes all of the following,except:
A)dimerization of the receptor.
B)autophosphorylation of the receptor.
C)activation of Ras through an interaction with GRB2 and Sos.
D)hydrolysis of GTP bound to Ras.

Accepted Answer

The binding of hormone to a receptor tyrosine kinase activates Ras through an interaction with GRB2 and Sos, but does not cause hydrolysis of GTP bound to Ras. This hydrolysis occurs as a result of the intrinsic GTPase activity of Ras or through the action of RasGAP.