3B9W:
reference: The 1.3-A resolution structure of Nitrosomonas europaea Rh50 and mechanistic implications for NH3 transport by Rhesus family proteins., Lupo D, Li XD, Durand A, Tomizaki T, Cherif-Zahar B, Matassi G, Merrick M, Winkler FK, Proc Natl Acad Sci U S A. 2007 Nov 21;. PMID: 18032606

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