Gpb5, or Glycoprotein hormone beta 5, is a human gene encoded by GPHB5. It may also be known as: Glycoprotein hormone beta-5; Thyrostimulin subunit beta; B5; GPB5; ZLUT1. The encoded protein has an amino acid length of 130 and a mass of 14.2 kDa. Gpb5 is a member of the Glycoprotein hormones subunit beta family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.