Errata The authors have identified that corrections must be made to the representative images in Fig. 2A of the original manuscript  (D2 GAPDH), 2D (D2 and D4 NFATc1 and GAPDH) and 2E (GAPDH). The appropriate images have been added to the corrected figure. The figure caption remains unchanged from the original publication. Transparency Document The Transparency document associated with this article can be found, in online version.