Predicted to enable DNA-directed 5'-3' RNA polymerase activity. Involved in maintenance of ER location. Located in neuronal cell body. Is expressed in brain; extraembryonic component; and genitourinary system. Orthologous to several human genes including GCOM1 (GCOM1, MYZAP-POLR2M combined locus). [provided by Alliance of Genome Resources, Apr 2022]