Anti-PHKB antibodies are used in the immunodetection of the protein phosphorylase kinase regulatory subunit beta. In humans, the canonical protein has a reported length of 1093 amino acid residues and a mass of 124.9 kDa. Its subcellular localization is in the cell membrane. Alternative splicing is reported to yield 4 different isoforms for this protein. A member of the Phosphorylase b kinase regulatory chain protein family, it is known to be involved with protein phosphorylation. Post-translational modifications have been described, including phosphorylation. Synonyms for this target antigen include phosphorylase kinase beta-subunit, phosphorylase kinase subunit beta, phosphorylase kinase, beta, and phosphorylase b kinase regulatory subunit beta.