Receptor for SEMA7A, for vaccinia virus semaphorin A39R and for herpesvirus Sema protein. Binding of semaphorins triggers cellular responses leading to the rearrangement of the cytoskeleton and to secretion of IL6 and IL8 (By similarity). Monomer. Homodimer. Interacts with SEMA7A (By similarity). Detected on dendritic cells, skin Langerhans cells and neutrophils (at protein level). No visible phenotype. Belongs to the plexin family.