protein-arginine omega-N asymmetric methyltransferase activity
protein-arginine omega-n asymmetric methyltransferase activity
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.