1JN5

Structural basis for the recognition of a nucleoporin FG-repeat by the NTF2-like domain of TAP-p15 mRNA export factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.241 

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This is version 1.2 of the entry. See complete history


Literature

Structural basis for the recognition of a nucleoporin FG repeat by the NTF2-like domain of the TAP/p15 mRNA nuclear export factor.

Fribourg, S.Braun, I.C.Izaurralde, E.Conti, E.

(2001) Mol Cell 8: 645-656

  • DOI: 10.1016/s1097-2765(01)00348-3
  • Primary Citation of Related Structures:  
    1JKG, 1JN5

  • PubMed Abstract: 
  • TAP-p15 heterodimers have been implicated in the export of mRNAs through nuclear pore complexes (NPCs). We report a structural analysis of the interaction domains of TAP and p15 in a ternary complex with a Phe-Gly (FG) repeat of an NPC component. The ...

    TAP-p15 heterodimers have been implicated in the export of mRNAs through nuclear pore complexes (NPCs). We report a structural analysis of the interaction domains of TAP and p15 in a ternary complex with a Phe-Gly (FG) repeat of an NPC component. The TAP-p15 heterodimer is structurally similar to the homodimeric transport factor NTF2, but unlike NTF2, it is incompatible with either homodimerization or Ran binding. The NTF2-like heterodimer functions as a single structural unit in recognizing an FG repeat at a hydrophobic pocket present only on TAP and not on p15. This FG binding site interacts synergistically with a second site at the C terminus of TAP to mediate mRNA transport through the pore. In general, our findings suggest that FG repeats bind with a similar conformation to different classes of transport factors.


    Organizational Affiliation

    European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69117, Heidelberg, Germany



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
p15A140Homo sapiensMutation(s): 0 
Gene Names: NXT1
Find proteins for Q9UKK6 (Homo sapiens)
Explore Q9UKK6 
Go to UniProtKB:  Q9UKK6
NIH Common Fund Data Resources
PHAROS  Q9UKK6
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TAPB250Homo sapiensMutation(s): 0 
Gene Names: NXF1TAP
Find proteins for Q9UBU9 (Homo sapiens)
Explore Q9UBU9 
Go to UniProtKB:  Q9UBU9
NIH Common Fund Data Resources
PHAROS  Q9UBU9
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
FG-repeatC12N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.241 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.2α = 90
b = 105.2β = 90
c = 172.96γ = 120
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-10-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance