a) Name 2 specific proteins (or 2 specific types of protein) that bind to each other as part of their normal function AND describe in detail what happens as a result (what the proteins do once the tw bind each other, and what that causes to happen in the cell). b) Describe, in detail, all the intermolecular forces or properties that allow those 2 proteins (from part a, above) to bind together.

The normal sequence of a protein is: Met – Thr – Lys – His – Ser – Ser ... Mutations of the DNA have led to the following protein sequences. In each case, provide a specific explanation of the mutation or mutations that could have occurred. a. Met – Pro – Lys – His – Ser – Ser ... b. Met – Thr c. Met – Thr – Lys – Gln – Leu – Phe ...

8) Indicate which of the five major types of membrane protein (adhesion, enzymatic, recognition, receptor, and transport) is most likely to be involved in each of the situations described below: a) An oncologist wants to study the cells from a certain tumour that has been surgically removed from a patient. However, she must first treat the tumour with a solution affects a membrane protein on the tumour cells. Because of the effect of the solution on the membrane protein, the tumour tissue falls apart into individual cells. Type of membrane protein: b) Farmer Jebediah wakes up in the morning and makes himself an extra-strong coffee. The caffeine in the coffee attaches to a protein in the plasma membrane of his neurons, inducing a signal transduction cascade and causing Farmer Jebediah to be more alert Type of membrane protein:

Identify the following by describing their functions: EF-G, EF-Tu, EF-Ts, EF-P, and peptidyl transferase