My protease has a globular structure with beta sheets alpha

My protease has a globular structure with beta sheets, alpha helix and many sharp turns. It has a pocket where it binds amino acids and it has a flexible hinge that is regulated to cover the pocket so the enzyme can be turned off. Match the amino acid to the MOST APPROPRIATE location in/on the enzyme.

open hinge closed hinge

  
cysteine

  
proline

  
glycine

  
histidine

  
phenylalanine

  
serine

A.  
none of these

B.  
a sharp fixed turn in the protein backbone

C.  
a flexible hinge

D.  
the active site

E.  
internal within the enzyme

F.  
external on the enzyme

Solution

Answer:-

B. Phenylalanine
a sharp fixed turn in the protein backbone

C. Glycine
a flexible hinge

D. Proline
the active site

E. Cystein
internal within the enzyme

F. Serine
external on the enzyme