Nup170(aa979-1502), S.cerevisiae

Experimental Data Snapshot

  • Resolution: 3.20 Å
  • R-Value Free: 0.324 
  • R-Value Work: 0.307 
  • R-Value Observed: 0.307 

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Architectural nucleoporins Nup157/170 and Nup133 are structurally related and descend from a second ancestral element.

Whittle, J.R.Schwartz, T.U.

(2009) J Biol Chem 284: 28442-28452

  • DOI: https://doi.org/10.1074/jbc.M109.023580
  • Primary Citation of Related Structures:  
    3I4R, 3I5P, 3I5Q

  • PubMed Abstract: 

    The nuclear pore complex (NPC) constitutes one of the largest protein assemblies in the eukaryotic cell and forms the exclusive gateway to the nucleus. The stable, approximately 15-20-MDa scaffold ring of the NPC is built from two multiprotein complexes arranged around a central 8-fold axis. Here we present crystal structures of two large architectural units, yNup170(979-1502) and hNup107(658-925) x hNup133(517-1156), each a constituent of one of the two multiprotein complexes. Conservation of domain arrangement and of tertiary structure suggests that Nup157/170 and Nup133 derived from a common ancestor. Together with the previously established ancestral coatomer element (ACE1), these two elements constitute the major alpha-helical building blocks of the NPC scaffold and define its branched, lattice-like architecture, similar to vesicle coats like COPII. We hypothesize that the extant NPC evolved early during eukaryotic evolution from a rudimentary structure composed of several identical copies of a few ancestral elements, later diversified and specified by gene duplication.

  • Organizational Affiliation

    Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139. Electronic address: tus@mit.edu.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleoporin NUP170525Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: NLE3NUP170YBL0725YBL079W
Find proteins for P38181 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P38181 
Go to UniProtKB:  P38181
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP38181
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.20 Å
  • R-Value Free: 0.324 
  • R-Value Work: 0.307 
  • R-Value Observed: 0.307 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.37α = 90
b = 121.37β = 90
c = 256.729γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-08-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance