Abundant in the lateral nasal glands (PubMed:1915264, PubMed:1752363). Also present in the posterior septal and vomeronasal glands (PubMed:1752363). N-glycosylated (PubMed:1752363, PubMed:10049729). The N-glycans consist mainly of complex sialylated and fucosylated biantennary structures (PubMed:10049729). Truncated N-terminus.