1JWJ:
reference: Structures of tetrahydrobiopterin binding-site mutants of inducible nitric oxide synthase oxygenase dimer and implicated roles of Trp457., Aoyagi M, Arvai AS, Ghosh S, Stuehr DJ, Tainer JA, Getzoff ED, Biochemistry 2001 Oct 30;40(43):12826-32. PMID: 11669619

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