5J4I:
reference: Insights into the molecular basis for substrate binding and specificity of the wild-type L-arginine/agmatine antiporter AdiC., Ilgu H, Jeckelmann JM, Gapsys V, Ucurum Z, de Groot BL, Fotiadis D, Proc Natl Acad Sci U S A. 2016 Aug 31. pii: 201605442. PMID: 27582465

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