6YTL:
reference: Cryo-EM structures and functional properties of CALHM channels of the human placenta., Drozdzyk K, Sawicka M, Bahamonde-Santos MI, Jonas Z, Deneka D, Albrecht C, Dutzler R, Elife. 2020 May 6;9. pii: 55853. doi: 10.7554/eLife.55853. PMID: 32374262

This OCA Structure page
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