Part of a membrane-cytoskeletal adapter complex that forms a bridge between the endoplasmic reticulum and the plasma membrane. Associates with microtubules. Homodimer or homooligomer (PubMed:24909329). Interacts with the cowpea mosaic virus (CPMV) NTP-binding protein (NTB) (PubMed:11907339). Interacts with NET3C (PubMed:24909329). Localizes to immobile punctate structures reminiscent of the ER-plasma membrane contact sites. Belongs to the VAMP-associated protein (VAP) (TC 9.B.17) family. Truncated N-terminus. Sequencing errors.