Sec35p, a novel peripheral membrane protein, is required for ER to Golgi vesicle docking.
VanRheenen SM, Cao X, Lupashin VV, Barlowe C, Waters MG, J Cell Biol, 1998 Jun 1 - link

Initial docking of ER-derived vesicles requires Uso1p and Ypt1p but is independent of SNARE proteins.
Cao X, Ballew N, Barlowe C, EMBO J, 1998 Apr 15 - link