7B51

Crystal structure of human CRM1 covalently modified by 2-mercaptoethanol at Cys528

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 

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Literature

Crystal structure of human CRM1, covalently modified by 2-mercaptoethanol on Cys528, in complex with RanGTP.

Shaikhqasem, A., Schmitt, K., Valerius, O., Ficner, R.

(2021) Acta Crystallogr F Struct Biol Commun 77: 70-78

  • DOI: https://doi.org/10.1107/S2053230X2100203X
  • Primary Citation of Related Structures:  
    7B51

  • PubMed Abstract: 

    CRM1 is a nuclear export receptor that has been intensively targeted over the last decade for the development of antitumor and antiviral drugs. Structural analysis of several inhibitor compounds bound to CRM1 revealed that their mechanism of action relies on the covalent modification of a critical cysteine residue (Cys528 in the human receptor) located in the nuclear export signal-binding cleft. This study presents the crystal structure of human CRM1, covalently modified by 2-mercaptoethanol on Cys528, in complex with RanGTP at 2.58 Å resolution. The results demonstrate that buffer components can interfere with the characterization of cysteine-dependent inhibitor compounds.

    • Organizational Affiliation: 

    Department for Molecular Structural Biology, Georg-August-Universität Göttingen, Justus-von-Liebig Weg 11, 37077 Göttingen, Germany.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GTP-binding nuclear protein RanA [auth B]182Homo sapiensMutation(s): 1 
Gene Names: RAN, ARA24, OK/SW-cl.81
UniProt & NIH Common Fund Data Resources
Find proteins for P62826 (Homo sapiens)
Explore P62826 
Go to UniProtKB:  P62826
PHAROS:  P62826
GTEx:  ENSG00000132341 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62826
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Exportin-1B [auth A]1,060Homo sapiensMutation(s): 3 
Gene Names: XPO1, CRM1
UniProt & NIH Common Fund Data Resources
Find proteins for O14980 (Homo sapiens)
Explore O14980 
Go to UniProtKB:  O14980
PHAROS:  O14980
GTEx:  ENSG00000082898 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO14980
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.111α = 90
b = 150.591β = 90
c = 231.969γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
German Research Foundation (DFG)Germany--

Revision History  (Full details and data files)

  • Version 1.0: 2021-03-10
    Type: Initial release
  • Version 1.1: 2021-03-17
    Changes: Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Database references, Refinement description