Predicted to enable arginine-tRNA ligase activity. Predicted to be involved in arginyl-tRNA aminoacylation and mitochondrial translation. Predicted to be active in mitochondrion. Human ortholog(s) of this gene implicated in pontocerebellar hypoplasia type 6. Orthologous to human RARS2 (arginyl-tRNA synthetase 2, mitochondrial). [provided by Alliance of Genome Resources, Apr 2022]