4FDD

Crystal structure of KAP beta2-PY-NLS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural and energetic basis of ALS-causing mutations in the atypical proline-tyrosine nuclear localization signal of the Fused in Sarcoma protein (FUS).

Zhang, Z.C.Chook, Y.M.

(2012) Proc.Natl.Acad.Sci.USA 109: 12017-12021

  • DOI: 10.1073/pnas.1207247109

  • PubMed Abstract: 
  • Mutations in the proline/tyrosine-nuclear localization signal (PY-NLS) of the Fused in Sarcoma protein (FUS) cause amyotrophic lateral sclerosis (ALS). Here we report the crystal structure of the FUS PY-NLS bound to its nuclear import receptor Karyop ...

    Mutations in the proline/tyrosine-nuclear localization signal (PY-NLS) of the Fused in Sarcoma protein (FUS) cause amyotrophic lateral sclerosis (ALS). Here we report the crystal structure of the FUS PY-NLS bound to its nuclear import receptor Karyopherinβ2 (Kapβ2; also known as Transportin). The FUS PY-NLS occupies the structurally invariant C-terminal arch of Kapβ2, tracing a path similar to that of other characterized PY-NLSs. Unlike other PY-NLSs, which generally bind Kapβ2 in fully extended conformations, the FUS peptide is atypical as its central portion forms a 2.5-turn α-helix. The Kapβ2-binding epitopes of the FUS PY-NLS consist of an N-terminal PGKM hydrophobic motif, a central arginine-rich α-helix, and a C-terminal PY motif. ALS mutations are found almost exclusively within these epitopes. Each ALS mutation site makes multiple contacts with Kapβ2 and mutations of these residues decrease binding affinities for Kapβ2 (K(D) for wild-type FUS PY-NLS is 9.5 nM) up to ninefold. Thermodynamic analyses of ALS mutations in the FUS PY-NLS show that the weakening of FUS-Kapβ2 binding affinity, the degree of cytoplasmic mislocalization, and ALS disease severity are correlated.


    Related Citations: 
    • Structure of the nuclear transport complex karyopherin-beta2-Ran x GppNHp.
      Chook, Y.M.,Blobel, G.
      (1999) Nature 399: 230
    • Rules for nuclear localization sequence recognition by karyopherin beta 2.
      Lee, B.J.,Cansizoglu, A.E.,Louis, T.H.,Zhang, Z.C.,Chook, Y.M.
      (2006) Cell 126: 543
    • Structure-based design of a pathway-specific nuclear import inhibitor.
      Cansizoglu, A.E.,Lee, B.J.,Zhang, Z.C.,Fontoura, B.M.,M Chook, Y.
      (2007) Nat.Struct.Mol.Biol. 14: 452
    • Conformational heterogeneity of karyopherin beta2 is segmental.
      Cansizoglu, A.E.,Chook, Y.M.
      (2007) Structure 15: 1431


    Organizational Affiliation

    Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transportin-1
A
852Homo sapiensGene Names: TNPO1 (KPNB2, MIP1, TRN)
Find proteins for Q92973 (Homo sapiens)
Go to Gene View: TNPO1
Go to UniProtKB:  Q92973
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RNA-binding protein FUS
B
29Homo sapiensGene Names: FUS (TLS)
Find proteins for P35637 (Homo sapiens)
Go to Gene View: FUS
Go to UniProtKB:  P35637
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.208 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 128.720α = 90.00
b = 157.255β = 90.00
c = 67.543γ = 90.00
Software Package:
Software NamePurpose
HKL-3000data collection
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
REFMACrefinement
DENZOdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-18
    Type: Initial release
  • Version 1.1: 2012-12-12
    Type: Database references
  • Version 1.2: 2017-08-16
    Type: Refinement description, Source and taxonomy
  • Version 1.3: 2017-11-15
    Type: Refinement description