UDP-N-acetyl-alpha-D-glucosamine = UDP-N-acetyl-alpha-D-mannosamine
udp-n-acetyl-alpha-d-glucosamine = udp-n-acetyl-alpha-d-mannosamine
"uridine diphosphate-N-acetylglucosamine-2'-epimerase"
"uridine diphosphate-n-acetylglucosamine-2'-epimerase"