Whole cell extracts were prepared in 1% NP-40 lysis buffer containing protease and phosphatase inhibitors as described (8 (link)). Membranes were immunolabeled with anti-GLUT4 (sc-1608, Santa Cruz Biotech), anti-myc (9E10) (sc-40, Santa Cruz Biotech), anti-CRISPLD2 (NBP1–85143, Novus Biologicals) anti-adiponectin (Philipp Scherer) or anti-tubulin antibody (2148, Cell Signaling) and visualized with secondary antibodies conjugated with AlexaFluor 680 (Invitrogen). Fluorescence was quantified with a Li-Cor Odyssey imager (Li-Cor Biosciences, USA).