5AVS:
reference: Sequential substitution of K(+) bound to Na(+),K(+)-ATPase visualized by X-ray crystallography., Ogawa H, Cornelius F, Hirata A, Toyoshima C, Nat Commun. 2015 Aug 10;6:8004. doi: 10.1038/ncomms9004. PMID: 26258479

This OCA Structure page
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