7BMU

p62PH in cesium chloride (0.25 M CsCl in protein buffer)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.165 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Cesium based phasing of macromolecules: a general easy to use approach for solving the phase problem.

Koelmel, W.Kuper, J.Kisker, C.

(2021) Sci Rep 11: 17038-17038

  • DOI: https://doi.org/10.1038/s41598-021-95186-1
  • Primary Citation of Related Structures:  
    7BMO, 7BMP, 7BMQ, 7BMR, 7BMS, 7BMT, 7BMU, 7BMV, 7BMW, 7BMX, 7BMY, 7BMZ

  • PubMed Abstract: 

    Over the last decades the phase problem in macromolecular x-ray crystallography has become more controllable as methods and approaches have diversified and improved. However, solving the phase problem is still one of the biggest obstacles on the way of successfully determining a crystal structure. To overcome this caveat, we have utilized the anomalous scattering properties of the heavy alkali metal cesium. We investigated the introduction of cesium in form of cesium chloride during the three major steps of protein treatment in crystallography: purification, crystallization, and cryo-protection. We derived a step-wise procedure encompassing a "quick-soak"-only approach and a combined approach of CsCl supplement during purification and cryo-protection. This procedure was successfully applied on two different proteins: (i) Lysozyme and (ii) as a proof of principle, a construct consisting of the PH domain of the TFIIH subunit p62 from Chaetomium thermophilum for de novo structure determination. Usage of CsCl thus provides a versatile, general, easy to use, and low cost phasing strategy.


  • Organizational Affiliation

    Rudolf Virchow Center, University of Würzburg, Würzburg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RNA polymerase II transcription factor B 73 kDa subunit-like protein135Thermochaetoides thermophila DSM 1495Mutation(s): 0 
Gene Names: CTHT_0001260
UniProt
Find proteins for G0RZ08 (Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719))
Explore G0RZ08 
Go to UniProtKB:  G0RZ08
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupG0RZ08
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.165 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.462α = 90
b = 106.517β = 90
c = 75.899γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
REFMACphasing
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyKI 562/11-2

Revision History  (Full details and data files)

  • Version 1.0: 2021-10-06
    Type: Initial release
  • Version 1.1: 2024-06-19
    Changes: Data collection