Cystathionine lyase requires which cofactor ?: (A) Thymine, (B) Riboflavin, (C) Pyridoxine, (D) Niacin
Answer is C. Hydrolytic cleavage (hydrolysis) of cystathionine forms Homoserine plus cysteine.This reaction is catalyzed by the enzyme cystathionine lyase (cystathionase), which requires cofactor pyridoxal phosphate (active form of pyridoxin).