Catalysis of the addition of a second methyl group to methylated peptidyl-arginine. Methylation is on the same terminal nitrogen (omega nitrogen) residue that was previously methylated, resulting in asymmetrical peptidyl-N(omega),N(omega)-dimethylated arginine residues. (Gene Ontology, GO_0035242)
7 genes performing the protein-arginine omega-n asymmetric methyltransferase activity molecular function from the curated GO Molecular Function Annotations dataset.
