3VR2:
reference: Rotation mechanism of Enterococcus hirae V1-ATPase based on asymmetric crystal structures., Arai S, Saijo S, Suzuki K, Mizutani K, Kakinuma Y, Ishizuka-Katsura Y, Ohsawa N, Terada T, Shirouzu M, Yokoyama S, Iwata S, Yamato I, Murata T, Nature. 2013 Jan 31;493(7434):703-7. doi: 10.1038/nature11778. Epub 2013 Jan 13. PMID: 23334411

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