Nucleoporin essential for nuclear pore assembly and fusion, nuclear pore spacing, as well as structural integrity. Forms dimers and possibly higher-order oligomers. Preferential expressed in epithelial cells. In the kidney, expression was seen in both the epithelium derived from the ureteric tree and the mesenchyme-derived epithelium. In other tissues of 13-day-old embryos, expression was also confined to the epithelium. In nervous tissues, mainly expressed in the olfactory epithelium and walls of the lateral ventricle. Weak expression was seen in the heart. N-glycosylated, but not all potential glycosylation sites may be used. Contains high-mannose type oligosaccharides (By similarity). Phosphorylated at Ser-1880 in mitosis specifically; not phosphorylated in interphase. Belongs to the NUP210 family.