This entry represents the helical domain of Nup120 from S. pombe referred to as the irregular helical bundle (IHB) [1,2], which makes extensive contacts with the propeller and helical bundle at the N-terminal. Nup120 functions as a component of the nuclear pore complex (NPC). Deletion of this gene causes clustering of NPCs at one side of the nuclear envelope, moderate nucleolar fragmentation and slower cell growth.

1: Molecular basis for Nup37 and ELY5/ELYS recruitment to the nuclear pore complex. Bilokapic S, Schwartz TU; Proc Natl Acad Sci U S A. 2012;109:15241-15246. PMID:22955883

2: Structural evolution of the membrane-coating module of the nuclear pore complex. Liu X, Mitchell JM, Wozniak RW, Blobel G, Fan J; Proc Natl Acad Sci U S A. 2012;109:16498-16503. PMID:23019579