UDP-N-acetyl-alpha-D-glucosamine = UDP-N-acetyl-alpha-D-mannosamine
udp-n-acetyl-alpha-d-glucosamine = udp-n-acetyl-alpha-d-mannosamine
"UDP-N-acetyl-D-glucosamine 2-epimerase"
"udp-n-acetyl-d-glucosamine 2-epimerase"