Enables identical protein binding activity. Predicted to be involved in L-proline biosynthetic process. Predicted to act upstream of or within cytidine deamination. Predicted to be located in cytosol; intercellular bridge; and mitotic spindle. Orthologous to human PYCR3 (pyrroline-5-carboxylate reductase 3). [provided by Alliance of Genome Resources, Apr 2022]