label: N-acetyl-beta-D-glucosaminyl-(1->4)-[hyaluronan](n) + UDP-alpha-D-glucuronate = [hyaluronan](n+1) + UDP + H(+)
label_lc: n-acetyl-beta-d-glucosaminyl-(1->4)-[hyaluronan](n) + udp-alpha-d-glucuronate = [hyaluronan](n+1) + udp + h(+)