L-arginyl-[protein] + S-adenosyl-L-methionine = N(omega)-methyl-L-arginyl-[protein] + S-adenosyl-L-homocysteine + H(+)
l-arginyl-[protein] + s-adenosyl-l-methionine = n(omega)-methyl-l-arginyl-[protein] + s-adenosyl-l-homocysteine + h(+)
"type III protein arginine methyltransferase"
"type iii protein arginine methyltransferase"