Question

4. The S1 pocket of serine proteases

a. is where the proper substrate binds

b. is the catalytic triad

c. determines which amino acid side chain is bound

d. all of the are true

e. none of the above are true

5. With respect to aspartyl proteases

a. the use a zinc to make alkoxide

b. they use an activated hydroxyl made from water

c. they form a transient covalent bond with the peptide being cut

d. all the above are true

e. none of the above are true

6. With respect to restriction enzymes

a. their action is inhibited by methylases

b. only animals use them as a defense system

c. they act by cutting RNA at specific nucleotide sequences

d. all of the above are true

e. none of the above are true

Answer 1