Possible role in transport between endoplasmic reticulum and Golgi. Positively regulates trafficking of the secretory proteins alpha1-antitrypsin/SERPINA1 and HP/haptoglobin (By similarity).
Subcellular locations: Endoplasmic reticulum-Golgi intermediate compartment membrane, Golgi apparatus, Cis-Golgi network membrane, Endoplasmic reticulum membrane
Cycles between the endoplasmic reticulum and the Golgi.