Guanylate Cyclase 1, soluble, beta 2, or Guanylate cyclase 1, soluble, beta 2 (pseudogene), is a human gene encoded by GUCY1B2. It may also be known as: Guanylate cyclase soluble subunit beta-2; GCS-beta-2; GC-SB2. The encoded protein is an enzyme with an amino acid length of 617 and a mass of 70.4 kDa. Other isoforms may exist. Guanylate Cyclase 1, soluble, beta 2 is a member of the Adenylyl cyclase class-4/guanylyl cyclase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog.