TOPP4 (Type one serine/threonine protein phosphatase 4); protein serine/threonine phosphatase. Identical to Serine/threonine-protein phosphatase PP1 isozyme 4 (TOPP4) [Arabidopsis Thaliana] (GB:P48484;GB:Q147H5); similar to TOPP2 (Type one serine/threonine protein phosphatase 2), protein serine/threonine phosphatase [Arabidopsis thaliana] (TAIR:AT5G59160.3); similar to TOPP2 (Type one serine/threonine protein phosphatase 2), protein serine/threonine phosphatase [Arabidopsis thaliana] (TAIR:AT5G59160.2); similar to TOPP2 (Type one serine/threonine protein phosphatase 2), protein serine/threonine phosphatase [Arabidopsis thaliana] (TAIR:AT5G59