You Are Attempting to Crystallize the Head Group of a Myosin-Like

Multiple Choice

You are attempting to crystallize the head group of a myosin-like muscle protein from a newly discovered vertebrate organism. Assuming that the protein structure is similar to other vertebrate myosins, which enzymes should you use to remove the myosin-like head group from the rest of the myosin-like protein?

A) trypsin
B) myosinase
C) papain
D) both trypsin and myosinase
E) both trypsin and papain