Which enzyme is involved in the degradation of homocysteine to methionine in the human body?

A Methionine synthase ✓
B Cystathionine beta-synthase
C Homocysteine methyltransferase
D Betaine-homocysteine methyltransferase

Explanation

Methionine synthase is an enzyme that catalyzes the conversion of homocysteine to methionine, using vitamin B12 as a cofactor.

Source

Biochemistry textbooks
Enzymes in Disease Biochemistry Amino Acid Metabolism Hard MEDICAL Confidence: high