In the version of this paper originally published, three references were accidentally omitted: Schwartz, J. C. et al. Cell Rep. 5, 918-925 (2013); Tundup, S. et al. FEBS Lett. 580, 1285-1293 (2006); and Itri, F. et al. Biochem. Biophys. Res. Commun. 492, 67-73 (2017). The PDF and HTML versions of the paper now include these as references 58, 59, and 60, respectively, and subsequent references have been renumbered accordingly.