label: 3-O-{beta-D-GlcA-(1->3)-[beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)](n)-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl}-L-seryl-[protein] + UDP-N-acetyl-alpha-D-galactosamine => 3-O-{[beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)](n+1)-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl}-L-seryl-[protein] + UDP + H(+)
label_lc: 3-o-{beta-d-glca-(1->3)-[beta-d-galnac-(1->4)-beta-d-glca-(1->3)](n)-beta-d-galnac-(1->4)-beta-d-glca-(1->3)-beta-d-gal-(1->3)-beta-d-gal-(1->4)-beta-d-xyl}-l-seryl-[protein] + udp-n-acetyl-alpha-d-galactosamine => 3-o-{[beta-d-galnac-(1->4)-beta-d-glca-(1->3)](n+1)-beta-d-galnac-(1->4)-beta-d-glca-(1->3)-beta-d-gal-(1->3)-beta-d-gal-(1->4)-beta-d-xyl}-l-seryl-[protein] + udp + h(+)