5M87:
reference: Structural and mechanistic basis of proton-coupled metal ion transport in the SLC11/NRAMP family., Ehrnstorfer IA, Manatschal C, Arnold FM, Laederach J, Dutzler R, Nat Commun. 2017 Jan 6;8:14033. doi: 10.1038/ncomms14033. PMID: 28059071

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