Possible role in transport between endoplasmic reticulum and Golgi. May form a heteromeric complex composed of ERGIC1, ERGIC2 and ERGIC3 (PubMed:31142615). Within the complex, the interaction with ERGIC3 is direct (PubMed:31142615). Interacts with ERGIC3/ERV46 (PubMed:15308636). Cycles between the endoplasmic reticulum and the Golgi. N-glycosylated. The disease is caused by variants affecting the gene represented in this entry. Belongs to the ERGIC family. Extended N-terminus.