Tetrahydrobiopterin scavenges superoxide in dopaminergic neurons.
Nakamura K, Bindokas VP, Kowlessur D, Elas M, Milstien S, Marks JD, Halpern HJ, Kang UJ. Tetrahydrobiopterin scavenges superoxide in dopaminergic neurons. J Biol Chem. 2001 Sep 14; 276(37):34402-7.