N(omega),N('omega)-dimethyl-L-arginine + pyruvate => 5-(3,3'-dimethylguanidino)-2-oxopentanoate + L-alanine
n(omega),n('omega)-dimethyl-l-arginine + pyruvate => 5-(3,3'-dimethylguanidino)-2-oxopentanoate + l-alanine