The Rockefeller University Press $30.00 J. Cell Biol. Vol. 206 No. 6 751–762 www.jcb.org/cgi/doi/10.1083/jcb.201312062 JCB 751 Correspondence to Kota Saito: [email protected] Abbreviations used in this paper: BFA, Brefeldin A; CT, C terminus; ERGIC, ER– Golgi intermediate compartment; GEF, guanine-nucleotide exchange factor; MBP, maltose-binding protein; qRT-PCR, quantitative RT-PCR; R...