CES5A is a symbol for the gene, Carboxylesterase 5A, in humans. Other names include: Carboxylesterase-like urinary excreted protein homolog; Cauxin; Carboxylesterase 5A ; CES4C1; CES5; CES7; HEL126. The encoded protein is an enzyme with an amino acid length of 575 and a mass of 63.9 kDa. Other isoforms may exist. CES5A is a member of the Type-B carboxylesterase/lipase family. This gene shares homology with other species, including: Mouse, Rat, Frog.