4CHW:
reference: Ligand-induced structural changes in the cyclic nucleotide-modulated potassium channel MloK1., Kowal J, Chami M, Baumgartner P, Arheit M, Chiu PL, Rangl M, Scheuring S, Schroder GF, Nimigean CM, Stahlberg H, Nat Commun. 2014 Jan 28;5:3106. doi: 10.1038/ncomms4106. PMID: 24469021

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