1X13:
reference: X-ray Structure of Domain I of the Proton-pumping Membrane Protein Transhydrogenase from Escherichia coli., Johansson T, Oswald C, Pedersen A, Tornroth S, Okvist M, Karlsson BG, Rydstrom J, Krengel U, J Mol Biol 2005 Sep 16;352(2):299-312. PMID: 16083909

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