PYGL encodes the human gene, Phosphorylase, glycogen, liver. It may also be known as: Glycogen phosphorylase, liver form; Glycogen phosphorylase, liver form ; Hers disease; glycogen storage disease type VI; GSD6. The encoded protein is an enzyme with an amino acid length of 847 and a mass of 97.1 kDa. Other isoforms may exist. PYGL is a member of the Glycogen phosphorylase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.