Q. Choose the correct non-protein amino acid from the given option.
A) Hydroxyproline
B) Hydroxylysine
C) Cystine
D) $\gamma$-amino butyric acid
Explanation
Gamma amino butyric acid (GABA) is an inhibitory neurotransmitter in the human brain. It is a derivative of glutamic acid.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.