PRKAR1B is a symbol for the gene, Protein kinase, cAMP-dependent, regulatory subunit type I beta, in humans. Other names include: cAMP-dependent protein kinase type I-beta regulatory subunit; PRKAR1; protein kinase, cAMP-dependent, regulatory, type I, beta. The encoded protein has an amino acid length of 381 and a mass of 43.1 kDa. Other isoforms may exist. PRKAR1B is a member of the CAMP-dependent kinase regulatory chain family. This gene shares homology with other species, including: Zebrafish, Chicken.