This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
Vitamin K is involved in the post-translational modiffication of? 
Select and explain. 
A. Glutamate, B. Aspaate, C. Glycine, D. GABA
A: Glutamate
Answer: A: Glutamate 
Explanation: Vit K is involved in the gamma carboxylation of glutamate . From essential of medical pharmacology K D Tripati 7th edition Page no 613