3DET:
reference: Ion permeation through a Cl--selective channel designed from a CLC Cl-/H+ exchanger., Jayaram H, Accardi A, Wu F, Williams C, Miller C, Proc Natl Acad Sci U S A. 2008 Aug 12;105(32):11194-9. Epub 2008 Aug 4. PMID: 18678918

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