This is the C-termainl half of a family of nucleoporin proteins. Nucleoporins are the main components of the nuclear pore complex in eukaryotic cells, and mediate bidirectional nucleocytoplasmic transport, especially of mRNA and proteins. Two nucleoporin classes are known: one is characterised by the FG repeat Pfam:PF03093; the other is represented by this family, and lacks any repeats. RNA undergoing nuclear export first encounters the basket of the nuclear pore and many nucleoporins are accessible on the basket side of the pore [2].

1: Localization of a human nucleoporin 155 gene (NUP155) to the 5p13 region and cloning of its cDNA. Zhang X, Yang H, Corydon MJ, Zhang X, Pedersen S, Korenberg JR, Chen XN, Laporte J, Gregersen N, Niebuhr E, Liu G, Bolund L; Genomics 1999;57:144-151. PMID:10191094

2: Novel vertebrate nucleoporins Nup133 and Nup160 play a role in mRNA export. Vasu S, Shah S, Orjalo A, Park M, Fischer WH, Forbes DJ; J Cell Biol 2001;155:339-354. PMID:11684705