Anti-protein kinase (cAMP-dependent, catalytic) inhibitor beta antibodies enable researchers to detect and measure the protein kinase (cAMP-dependent, catalytic) inhibitor beta antigen in biological samples. This target is a reported synonym of the PKIB gene, which encodes cAMP-dependent protein kinase inhibitor beta. The human version of protein kinase (cAMP-dependent, catalytic) inhibitor beta has a canonical amino acid length of 78 residues and a protein mass of 8.5 kilodaltons, although 2 isoforms have been identified. It is reported to be widely expressed in many tissue types. Other names for this target antigen include PRKACN2, PKI-beta, and cAMP-dependent protein kinase inhibitor 2.