Possible role in transport between endoplasmic reticulum and Golgi. May form a heteromeric complex composed of ERGIC1, ERGIC2 and ERGIC3 (By similarity). Within the complex, the interaction with ERGIC3 is direct (By similarity). Interacts with ERGIC3/ERV46 (By similarity). Cycles between the endoplasmic reticulum and the Golgi. N-glycosylated. Belongs to the ERGIC family.