PPP1CB (Protein Phosphatase 1 Catalytic Subunit Beta): PPP1CB is a gene that encodes a catalytic subunit of protein phosphatase 1 — an enzyme essential for regulating cellular processes through dephosphorylation. It plays critical roles in muscle contraction, glycogen metabolism, and cell division. Dysregulation of PPP1CB activity has been linked to various diseases, including heart conditions and certain cancers.