Serine/threonine-protein phosphatase 4 regulatory subunit 2 (PPP4R2)

Regulatory subunit of serine/threonine-protein phosphatase 4 (PP4). May regulate the action of PPP4C at centrosomal microtubule organizing centers.

Its interaction with the SMN complex contributes to enhance the temporal localization of snRNPs, suggesting a role of PPP4C in maturation of spliceosomal snRNPs. The PPP4C-PPP4R2-PPP4R3A PP4 complex specifically dephosphorylates H2AFX phosphorylated on 'Ser-140' (gamma-H2AFX) generated during DNA replication and required for DNA double strand break repair.