Predicted to enable several functions, including ATP binding activity; disordered domain specific binding activity; and identical protein binding activity. Involved in several processes, including animal organ development; pyrimidine nucleobase metabolic process; and response to ionizing radiation. Located in several cellular components, including cell projection; neuronal cell body; and nuclear envelope. Biomarker of visual epilepsy. Orthologous to human RRM1 (ribonucleotide reductase catalytic subunit M1). [provided by Alliance of Genome Resources, Apr 2022]