4FCI:
reference: Binding of the unreactive substrate analog L-2-amino-3-guanidinopropionic acid (dinor-L-arginine) to human arginase I., D'Antonio EL, Christianson DW, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2012 Aug;68(Pt 8):889-93. Epub , 2012 Jul 27. PMID: 22869115

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