1BK6

KARYOPHERIN ALPHA (YEAST) + SV40 T ANTIGEN NLS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.256 
  • R-Value Observed: 0.256 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystallographic analysis of the recognition of a nuclear localization signal by the nuclear import factor karyopherin alpha.

Conti, E.Uy, M.Leighton, L.Blobel, G.Kuriyan, J.

(1998) Cell 94: 193-204

  • DOI: 10.1016/s0092-8674(00)81419-1
  • Primary Citation of Related Structures:  
    1BK6, 1BK5

  • PubMed Abstract: 
  • Selective nuclear import is mediated by nuclear localization signals (NLSs) and cognate transport factors known as karyopherins or importins. Karyopherin alpha recognizes "classical" monopartite and bipartite NLSs. We report the crystal structure of ...

    Selective nuclear import is mediated by nuclear localization signals (NLSs) and cognate transport factors known as karyopherins or importins. Karyopherin alpha recognizes "classical" monopartite and bipartite NLSs. We report the crystal structure of a 50 kDa fragment of the 60 kDa yeast karyopherin alpha, in the absence and presence of a monopartite NLS peptide at 2.2 A and 2.8 A resolution, respectively. The structure shows a tandem array of ten armadillo repeats, organized in a right-handed superhelix of helices. Binding of the NLS peptide occurs at two sites within a helical surface groove that is lined by conserved residues. The structure reveals the determinants of NLS specificity and suggests a model for the recognition of bipartite NLSs.


    Organizational Affiliation

    Laboratories of Molecular Biophysics, The Rockefeller University, New York, New York 10021, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
KARYOPHERIN ALPHAAB422Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SRP1
Find proteins for Q02821 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q02821 
Go to UniProtKB:  Q02821
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
LARGE T ANTIGENCE6N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
LARGE T ANTIGENDF5N/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: 0.307 
  • R-Value Work: 0.256 
  • R-Value Observed: 0.256 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 161.12α = 90
b = 75.75β = 90
c = 84.46γ = 90
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: 1999-01-13
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance