What is the primary function of the glycosyltransferase enzyme in the context of ABO blood group system?

A To break down ABO antigens
B To synthesize ABO antigens ✓
C To degrade ABO antibodies
D To activate complement system

Explanation

Glycosyltransferase enzymes are responsible for adding specific sugar molecules to the precursor substance, resulting in the formation of A or B antigens on red blood cells.

Source

Medical Biochemistry textbook
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high