Source:http://linkedlifedata.com/resource/umls/id/C1324918
GO: Catalysis of the reaction: N-acetyl-D-glucosaminyldiphosphoundecaprenol + UDP-N-acetyl-D-mannosamine = N-acetyl-beta-D-mannosaminyl-1,4-N-acetyl-D-glucosaminyldiphosphoundecaprenol + UDP. [EC:2.4.1.187, MetaCyc:2.4.1.187-RXN]