5Y0B:
reference: The cryo-EM structure of gastric H+,K+-ATPase with bound BYK99, a high-affinity member of K+-competitive, imidazo[1,2-a]pyridine inhibitors., Abe K, Shimokawa J, Naito M, Munson K, Vagin O, Sachs G, Suzuki H, Tani K, Fujiyoshi Y, Sci Rep. 2017 Jul 26;7(1):6632. doi: 10.1038/s41598-017-06698-8. PMID: 28747707

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