Alterations at Arg(76) of human connexin 46, a residue associated with cataract formation, cause loss of gap junction formation but preserve hemichannel function.
Abrams CK, Peinado A, Mahmoud R, Bocarsly M, Zhang H, Chang P, Botello-Smith WM, Freidin MM, Luo Y. Am J Physiol Cell Physiol. 2018 Nov 1; 315(5):C623-C635. Epub 2018 Jul 25.