O antigen group O:30 repeat unit synthesis by glycosyltransferase reactions (lumped)
gdpfuc_c + gdpacper_c + udcdpglcnac_b1_3_glc_c ⇌ 2.0 gdp_c + udcdpglcnac_b1_3_glc_a1_4_fuc_a1_3_acper_c