H
Antigen
Two alleles:
A glucosyltransferase called
L-fucosyltransferase
H
Product coded for by H genes::
and
h
Transfers L-fucose (Fuc) to
precursor molecule attaching it to
the terminal D-galactose molecule
Function of product coded for by H genes:
RBC
Gal
Gal
Glc
Fuc