TOPP3 (Type one serine/threonine protein phosphatase 3); protein serine/threonine phosphatase. Identical to Serine/threonine-protein phosphatase PP1 isozyme 3 (TOPP3) [Arabidopsis Thaliana] (GB:P48483;GB:Q9SH54); similar to TOPP7 (Type one serine/threonine protein phosphatase 7), protein serine/threonine phosphatase [Arabidopsis thaliana] (TAIR:AT4G11240.1); similar to Serine/threonine-protein phosphatase PP1 (GB:P48488); contains InterPro domain Metallophosphoesterase; (InterPro:IPR004843); contains InterPro domain Serine/threonine-specific protein phosphatase and bis(5-nucleosyl)-tetraphosphatase; (InterPro:IPR006186)