Which of the Following Is NOT True About the Role

question 12

Multiple Choice

Which of the following is NOT true about the role of adapter proteins in the activation of Ras by receptor tyrosine kinases?

• A)Following dimerization and autophosphorylation of receptor tyrosine kinases,GRB2 and Sos proteins couple to the receptor.
• B)GRB2 and Sos proteins couple the receptor to the inactive Ras·GDP complex.
• C)GRB2 interacts with Sos via its SH3 domain.
• D)Sos acts as a GAP,which helps convert Ras·GDP to active Ras·GTP.

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Definitions:

Insulin Deficiency

A lack of the hormone insulin in the body, which is crucial for regulating blood glucose levels.

Type 1 Diabetes

A chronic condition where the pancreas produces little or no insulin, necessitating insulin administration for management.

Thyrotropin

Another term for thyroid-stimulating hormone (TSH), a hormone secreted by the pituitary gland to regulate the production of thyroid hormones.

Thyroid-Stimulating Hormone

A hormone produced by the pituitary gland that regulates the production of hormones by the thyroid gland.