UDP-2,4-diacetamido-2,4,6-trideoxy-beta-L-altropyranose hydrolase (, PseG, UDP-6-deoxy-AltdiNAc hydrolase, Cj1312) is an enzyme with systematic name UDP-2,4-bis(acetamido)-2,4,6-trideoxy-beta-L-altropyranose hydrolase. This enzyme catalyses the following chemical reaction
The enzyme is involved in biosynthesis of pseudaminic acid.