Crystal structure of scaffolding protein TtCheW from Thermoanaerobacter tengcongensis

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 

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Crystal structure of scaffolding protein CheW from thermoanaerobacter tengcongensis.

Yao, W.Shi, L.Liang, D.C.

(2007) Biochem Biophys Res Commun 361: 1027-1032

  • DOI: https://doi.org/10.1016/j.bbrc.2007.07.130
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The crystal structure of the scaffolding protein CheW from Thermoanaerobacter tengcongensis (TtCheW) is reported with a resolution at 2.2A using molecular replacement. Based on the crystal structure TmCheA P4-P5-TmCheW from Thermotoga maritime reported by others, we modeled the TmCheA P4-P5-TtCheW complex and predicted that TtCheW is involved in a hydrophobic interaction with CheA, similar to that for TmCheW. We also found that the conserved motif "NxxGxIxP" from CheW plays an important role in CheA binding. The coincidence of the reported mutation sites related to CheW-MCP binding, and the predicted protein interaction region within the TtCheW molecule, suggest that CheW-MCP binding sites lie in the groove-shaped area between TtCheW and the CheA P4 domain within the assembled model.

  • Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, Beijing 100101, PR China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Chemotaxis signal transduction protein
A, B
165Caldanaerobacter subterraneus subsp. tengcongensis MB4Mutation(s): 0 
Find proteins for Q8RBV8 (Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM 11007 / NBRC 100824 / MB4))
Explore Q8RBV8 
Go to UniProtKB:  Q8RBV8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8RBV8
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.214α = 90
b = 62.235β = 115.37
c = 55.142γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-09-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.2: 2023-08-30
    Changes: Data collection, Database references, Refinement description