Antigens

Question 1

added to the H antigen to form A antigen

Answer 1

N-acetylgalactosamine (GALNAC)

Question 2

added to the H antigen to form B antigen

Answer 2

D- Galactose

Question 3

enzyme that Adds GaLNAC to H antigen to form A

Answer 3

alpha-3-N-acetyl-D-Galactosamine transferase

Question 4

enzyme that adds Galactose to H antigen to form B antigen

Answer 4

alpha-3-D-galactosyl transferase

Question 5

what distinguishes a Type 2 chain from a Type 1

Answer 5

Connection between Gal and GALNAC

• Type 1 chain-> (beta 1-3 linkage)
• Type 2 chain-> (alpha 1-4 linkage)