Native-SAD phasing for human EGFR kinase domain.

Experimental Data Snapshot

  • Resolution: 3.20 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.189 

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Multi-crystal native SAD analysis at 6 keV.

Liu, Q.Guo, Y.Chang, Y.Cai, Z.Assur, Z.Mancia, F.Greene, M.I.Hendrickson, W.A.

(2014) Acta Crystallogr D Biol Crystallogr 70: 2544-2557

  • DOI: https://doi.org/10.1107/S1399004714013376
  • Primary Citation of Related Structures:  
    4TKQ, 4TKR, 4TKS

  • PubMed Abstract: 

    Anomalous diffraction signals from typical native macromolecules are very weak, frustrating their use in de novo structure determination. Here, native SAD procedures are described to enhance signal to noise in anomalous diffraction by using multiple crystals in combination with synchrotron X-rays at 6 keV. Increased anomalous signals were obtained at 6 keV compared with 7 keV X-ray energy, which was used for previous native SAD analyses. A feasibility test of multi-crystal-based native SAD phasing was performed at 3.2 Å resolution for a known tyrosine protein kinase domain, and real-life applications were made to two novel membrane proteins at about 3.0 Å resolution. The three applications collectively serve to validate the robust feasibility of native SAD phasing at lower energy.

  • Organizational Affiliation

    Department of Physiology and Cellular Biophysics, Columbia University, New York, NY 10032, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Epidermal growth factor receptor332Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P00533 (Homo sapiens)
Explore P00533 
Go to UniProtKB:  P00533
PHAROS:  P00533
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00533
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.20 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.189 
  • Space Group: I 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 146.161α = 90
b = 146.161β = 90
c = 146.161γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-08
    Type: Initial release
  • Version 1.1: 2014-10-22
    Changes: Database references