Erratum: The Emerging Role of the Ubiquitin Proteasome in Pulmonary Biology and Disease

There are errors in the figures and accompanying legends in the article by Weathington and colleagues, published in the September 1, 2013, issue of the Journal (1). In the schematic Figures 1 and 2, the enzymes E1 and E2 were mislabeled as ligases. In addition, the figure legends also referred to E1 and E2 enzymes as ligases; however, E1 enzymes should have been termed “activating enzymes,” and E2 enzymes, “conjugating enzymes.” For the convenience of our readers, a corrected version of the article replaced the previous version on November 8, 2013.