Required for endoplasmic reticulum (ER) network formation, shaping and remodeling; it links ER tubules to the cytoskeleton. May also enhance the cell surface expression of odorant receptors (By similarity). Interacts with OLFR992 (PubMed:15550249). Interacts with SPAST and ATL1. Interacts (via C-terminus) with microtubules (By similarity). Interacts with ZFYVE27 (PubMed:24668814). A small proportion is detected at the cell surface. Localizes to endoplasmic reticulum tubular network. Detected in olfactory sensory neurons of the olfactory epithelium, and in total brain. Belongs to the DP1 family.