Nat. Chem. Biol. 7, 128–129 (2011); published online 14 February 2011; corrected after print 18 March 2011

In the version of this article initially published, the page numbers for the highlight entitled “GPCRs flip out” are incorrect. The correct citation is Curr. Biol. 21, 149–153 (2011). The image for this highlight was mistakenly run with another highlight, “Reduced to action.” The errors have been corrected in the HTML and PDF versions of the article.