Predicted to enable UFM1 activating enzyme activity; protein homodimerization activity; and zinc ion binding activity. Predicted to be involved in several processes, including myeloid cell differentiation; protein K69-linked ufmylation; and reticulophagy. Predicted to be located in endoplasmic reticulum membrane. Predicted to be active in cytosol. Human ortholog(s) of this gene implicated in autosomal recessive spinocerebellar ataxia 24 and developmental and epileptic encephalopathy 44. Orthologous to human UBA5 (ubiquitin like modifier activating enzyme 5). [provided by Alliance of Genome Resources, Apr 2022]