BIOCHEMISTRY Correction for “Arginine substitution of a cysteine in transmembrane helix M8 converts Na+,K+-ATPase to an electroneutral pump similar to H+,K+-ATPase,” by Rikke Holm, Jaanki Khandelwal, Anja P. Einholm, Jens P. Andersen, Pablo Artigas, and Bente Vilsen, which appeared in issue 2, January 10, 2017, of Proc Natl Acad Sci USA (114:316–321; first published December 27, 2016; 10.1073/pnas.1617951114).
The authors wish to note the following: “A paper by Poulsen et al. (1) previously suggested that the arginine present in H+,K+-ATPase at the position corresponding to C932 of Na+,K+-ATPase functions as an internal counter-ion. This suggestion is in excellent agreement with the experimental data and resulting conclusion in our paper.” The full ref. 1 appears below.
1. Poulsen H, et al. (2010) Neurological disease mutations compromise a C-terminal ion pathway in the Na(+)/K(+)-ATPase. Nature 467(7311):99–102.