3SFT

Crystal structure of Thermotoga maritima CheB methylesterase catalytic domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.203 

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This is version 1.1 of the entry. See complete history


Literature

An insight into the interaction mode between CheB and chemoreceptor from two crystal structures of CheB methylesterase catalytic domain

Cho, K.H.Crane, B.R.Park, S.Y.

(2011) Biochem Biophys Res Commun 411: 69-75

  • DOI: 10.1016/j.bbrc.2011.06.090
  • Primary Citation of Related Structures:  
    3SFT

  • PubMed Abstract: 
  • We have determined 2.2 Å resolution crystal structure of Thermotoga maritima CheB methylesterase domain to provide insight into the interaction mode between CheB and chemoreceptors. T. maritima CheB methylesterase domain has identical topology of a modified doubly-wound α/β fold that was observed from the previously reported Salmonella typhimurium counterpart, but the analysis of the electrostatic potential surface near the catalytic triad indicated considerable charge distribution difference ...

    We have determined 2.2 Å resolution crystal structure of Thermotoga maritima CheB methylesterase domain to provide insight into the interaction mode between CheB and chemoreceptors. T. maritima CheB methylesterase domain has identical topology of a modified doubly-wound α/β fold that was observed from the previously reported Salmonella typhimurium counterpart, but the analysis of the electrostatic potential surface near the catalytic triad indicated considerable charge distribution difference. As the CheB demethylation consensus sites of the chemoreceptors, the CheB substrate, are not uniquely conserved between T. maritima and S. typhimurium, such surfaces with differing electrostatic properties may reflect CheB regions that mediate protein-protein interaction. Via the computational docking of the two T. maritima and S. typhimurium CheB structures to the respective T. maritima and Escherichia coli chemoreceptors, we propose a CheB:chemoreceptor interaction mode.


    Organizational Affiliation

    School of Systems Biomedical Science, Soongsil University, Seoul, Republic of Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chemotaxis response regulator protein-glutamate methylesteraseA193Thermotoga maritimaMutation(s): 0 
Gene Names: cheB
EC: 3.1.1.61 (PDB Primary Data), 3.5.1.44 (UniProt)
UniProt
Find proteins for Q9WYN9 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q9WYN9 
Go to UniProtKB:  Q9WYN9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9WYN9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.203 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.467α = 90
b = 65.075β = 90
c = 78.353γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
AMoREphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-07-20
    Type: Initial release
  • Version 1.1: 2013-06-19
    Changes: Database references