One of the amino acids has a side chain that connects to its amino group. It is often found in 'tight corners', and its structure is more constrained than that of other amino acids. Its presence sometimes puts a 'stop' to common protein shapes you'll be learning about.
Select one:
a. lysine
b. tryptophan
c. histidine
d. glutamine
e. proline

Question

One of the amino acids has a side chain that connects to its amino group. It is often found in 'tight corners', and its structure is more constrained than that of other amino acids. Its presence sometimes puts a 'stop' to common protein shapes you'll be learning about.
Select one:
a. lysine
b. tryptophan
c. histidine
d. glutamine
e. proline

caozeyuan · Answer

its proline, https://upload.wikimedia.org/wikipedia/commons/thumb/3/37/L-Proline_%28At_physiological_pH%29.svg/512px-L-Proline_%28At_physiological_pH%29.svg.png

caozeyuan · Answer

the NH2 is the amino group, which is linked to the side chain