Enables protein C-terminus binding activity and transmembrane transporter binding activity. Predicted to be involved in cellular protein modification process; positive regulation of transcription, DNA-templated; and regulation of signal transduction. Predicted to act upstream of or within cellular response to transforming growth factor beta stimulus; negative regulation of BMP signaling pathway; and positive regulation of protein export from nucleus. Located in neuron projection. Orthologous to human PPM1A (protein phosphatase, Mg2+/Mn2+ dependent 1A). [provided by Alliance of Genome Resources, Apr 2022]