4HB3

Crystal structure of CRM1(T539S)-Ran-RanBP1 with weakly bound unmodeled Leptomycin B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.243 

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This is version 1.5 of the entry. See complete history


Literature

Nuclear export inhibition through covalent conjugation and hydrolysis of Leptomycin B by CRM1.

Sun, Q.Carrasco, Y.P.Hu, Y.Guo, X.Mirzaei, H.Macmillan, J.Chook, Y.M.

(2013) Proc Natl Acad Sci U S A 110: 1303-1308

  • DOI: https://doi.org/10.1073/pnas.1217203110
  • Primary Citation of Related Structures:  
    4HAT, 4HAU, 4HAV, 4HAW, 4HAX, 4HAY, 4HAZ, 4HB0, 4HB2, 4HB3, 4HB4

  • PubMed Abstract: 

    The polyketide natural product Leptomycin B inhibits nuclear export mediated by the karyopherin protein chromosomal region maintenance 1 (CRM1). Here, we present 1.8- to 2.0-Å-resolution crystal structures of CRM1 bound to Leptomycin B and related inhibitors Anguinomycin A and Ratjadone A. Structural and complementary chemical analyses reveal an unexpected mechanism of inhibition involving covalent conjugation and CRM1-mediated hydrolysis of the natural products' lactone rings. Furthermore, mutagenesis reveals the mechanism of hydrolysis by CRM1. The nuclear export signal (NES)-binding groove of CRM1 is able to drive a chemical reaction in addition to binding protein cargoes for transport through the nuclear pore complex.


  • Organizational Affiliation

    Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9041, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GTP-binding nuclear protein Ran216Homo sapiensMutation(s): 0 
Gene Names: RANARA24OK/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  
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UniProt GroupP62826
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Ran-specific GTPase-activating protein 1140Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: YRB1CST20HTN1SFO1YDR002WYD8119.08
UniProt
Find proteins for P41920 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P41920 
Go to UniProtKB:  P41920
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UniProt GroupP41920
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Exportin-11,023Saccharomyces cerevisiaeMutation(s): 2 
Gene Names: CRM1KAP124XPO1YGR218WG8514
UniProt
Find proteins for P30822 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P30822 
Go to UniProtKB:  P30822
Entity Groups  
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UniProt GroupP30822
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.243 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.118α = 90
b = 106.118β = 90
c = 305.425γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-01-09
    Type: Initial release
  • Version 1.1: 2013-01-23
    Changes: Database references
  • Version 1.2: 2013-02-06
    Changes: Database references
  • Version 1.3: 2013-05-08
    Changes: Structure summary
  • Version 1.4: 2017-07-26
    Changes: Source and taxonomy
  • Version 1.5: 2024-02-28
    Changes: Data collection, Database references, Derived calculations