3X3C:
reference: Structural basis for Na(+) transport mechanism by a light-driven Na(+) pump., Kato HE, Inoue K, Abe-Yoshizumi R, Kato Y, Ono H, Konno M, Hososhima S, Ishizuka T, Hoque MR, Kunitomo H, Ito J, Yoshizawa S, Yamashita K, Takemoto M, Nishizawa T, Taniguchi R, Kogure K, Maturana AD, Iino Y, Yawo H, Ishitani R, Kandori H, Nureki O, Nature. 2015 May 7;521(7550):48-53. doi: 10.1038/nature14322. Epub 2015 Apr 6. PMID: 25849775

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