N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-(glycine)-D-alanyl-D-alanine-diphosphoundecaprenyl-N-acetylglucosamine:glycine transferase
2.0 gly_c + lip2g_c ⇌ 2.0 h2o_c + lip2g3_c