Regulator of membrane traffic from the Golgi apparatus towards the endoplasmic reticulum (ER). Has a low GTPase activity. Involved in COPI-independent retrograde transport from the Golgi to the ER. Recruits VPS13B isoform 2 to the Golgi membrane. Plays a role in neuron projection development.
Subcellular locations: Golgi apparatus membrane, Cytoplasmic vesicle, Secretory vesicle, Acrosome membrane
BICD2 facilitates its targeting to Golgi apparatus membrane.