6D3S:
reference: Cryo-EM visualization of an active high open probability CFTR anion channel., Fay JF, Aleksandrov LA, Jensen T, Cui L, Kousouros JN, He L, Aleksandrov AA, Gingerich D, Riordan JR, Chen J, Biochemistry. 2018 Oct 3. doi: 10.1021/acs.biochem.8b00763. PMID: 30281975

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