Pygb encodes the human gene, Phosphorylase, glycogen; brain. It may also be known as: Glycogen phosphorylase, brain form; Glycogen phosphorylase, brain form ; GPBB. The encoded protein is an enzyme with an amino acid length of 843 and a mass of 96.7 kDa. Other isoforms may exist. Pygb is a member of the Glycogen phosphorylase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.