Concept #1: Insulin Receptor

Example #1: Insulin binds to a receptor that:

Practice: The insulin receptor is an example of a _______:

Concept #2: INSR Substrates (IRS)

Practice: Insulin binds to a receptor that:

I. Is coupled to a G protein.
II. Possesses tyrosine kinase activity.
III. Possesses serine/threonine phosphatase activity.
IV. Interacts with the adapter protein IRS-1.

Practice: Which of the following is TRUE concerning the interaction between the insulin receptor and IRS-1: