3T98

Molecular Architecture of the Transport Channel of the Nuclear Pore Complex: Nup54/Nup58


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.253 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular architecture of the transport channel of the nuclear pore complex.

Solmaz, S.R.Chauhan, R.Blobel, G.Melcak, I.

(2011) Cell 147: 590-602

  • DOI: 10.1016/j.cell.2011.09.034
  • Primary Citation of Related Structures:  
    3T97, 3T98

  • PubMed Abstract: 
  • The nuclear pore complex encloses a central channel for nucleocytoplasmic transport, which is thought to consist of three nucleoporins, Nup54, Nup58, and Nup62. However, the structure and composition of the channel are elusive. We determined the crystal structures of the interacting domains between these nucleoporins and pieced together the molecular architecture of the mammalian transport channel ...

    The nuclear pore complex encloses a central channel for nucleocytoplasmic transport, which is thought to consist of three nucleoporins, Nup54, Nup58, and Nup62. However, the structure and composition of the channel are elusive. We determined the crystal structures of the interacting domains between these nucleoporins and pieced together the molecular architecture of the mammalian transport channel. Located in the channel midplane is a flexible Nup54⋅Nup58 ring that can undergo large rearrangements yielding diameter changes from ∼20 to ∼40 nm. Nup62⋅Nup54 triple helices project alternately up and down from either side of the midplane ring and form nucleoplasmic and cytoplasmic entries. The channel consists of as many as 224 copies of the three nucleoporins, amounting to a molar mass of 12.3 MDa and contributing 256 phenylalanine-glycine repeat regions. We propose that the occupancy of these repeat regions with transport receptors modulates ring diameter and transport activity.


    Organizational Affiliation

    Laboratory of Cell Biology, Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear pore complex protein Nup54A, C51Rattus norvegicusMutation(s): 0 
Gene Names: Nup54
UniProt
Find proteins for P70582 (Rattus norvegicus)
Explore P70582 
Go to UniProtKB:  P70582
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP70582
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nucleoporin Nup58/Nup45B93Rattus norvegicusMutation(s): 0 
Gene Names: Nupl1Nup58
UniProt
Find proteins for P70581 (Rattus norvegicus)
Explore P70581 
Go to UniProtKB:  P70581
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP70581
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.253 
  • Space Group: P 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.96α = 90
b = 54.96β = 90
c = 190.29γ = 90
Software Package:
Software NamePurpose
SHARPphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-02
    Type: Initial release
  • Version 1.1: 2011-11-09
    Changes: Database references