ENT is an alias for the gene, 5'-nucleotidase, ecto (CD73), in humans. Other names include: CD antigen CD73; 5'-NT; 5'-nucleotidase; CALJA; CD73; E5NT; NT; eN; eNT. The encoded protein is an enzyme with an amino acid length of 574 and a mass of 63.4 kDa. Other isoforms may exist. ENT is a member of the 5'-nucleotidase family. This gene shares homology with other species, including: Mouse, Rat.