Predicted to enable several functions, including FFAT motif binding activity; protein dimerization activity; and tubulin binding activity. Predicted to be involved in several processes, including IRE1-mediated unfolded protein response; endoplasmic reticulum organization; and modulation by host of viral genome replication. Predicted to be located in Golgi apparatus; endoplasmic reticulum; and membrane. Predicted to be active in endoplasmic reticulum membrane and plasma membrane. Human ortholog(s) of this gene implicated in amyotrophic lateral sclerosis; amyotrophic lateral sclerosis type 8; autosomal dominant adult-onset proximal spinal muscular atrophy; and spinal muscular atrophy. Orthologous to human VAPB (VAMP associated protein B and C). [provided by Alliance of Genome Resources, Apr 2022]