Bacterial Effector NleH2 Kinase Domain

Experimental Data Snapshot

  • Resolution: 2.27 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


NleH defines a new family of bacterial effector kinases.

Grishin, A.M.Cherney, M.Anderson, D.H.Phanse, S.Babu, M.Cygler, M.

(2014) Structure 22: 250-259

  • DOI: https://doi.org/10.1016/j.str.2013.11.006
  • Primary Citation of Related Structures:  
    4LRJ, 4LRK

  • PubMed Abstract: 

    Upon host cell infection, pathogenic Escherichia coli hijacks host cellular processes with the help of 20-60 secreted effector proteins that subvert cellular processes to create an environment conducive to bacterial survival. The NleH effector kinases manipulate the NF-κB pathway and prevent apoptosis. They show low sequence similarity to human regulatory kinases and contain two domains, the N-terminal, likely intrinsically unfolded, and a C-terminal kinase-like domain. We show that these effectors autophosphorylate on sites located predominantly in the N-terminal segment. The kinase domain displays a minimal kinase fold, but lacks an activation loop and the GHI subdomain. Nevertheless, all catalytically important residues are conserved. ATP binding proceeds with minimal structural rearrangements. The NleH structure is the first for the bacterial effector kinases family. NleHs and their homologous effector kinases form a new kinase family within the cluster of eukaryotic-like kinases that includes also Rio, Bud32, and KdoK families.

  • Organizational Affiliation

    Department of Biochemistry, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada. Electronic address: andrey.grishin@usask.ca.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Effector NleH2
A, B, C, D
167Escherichia coli O157:H7Mutation(s): 0 
Gene Names: ECs1814nleh2Z6021
Find proteins for Q8XAL6 (Escherichia coli O157:H7)
Explore Q8XAL6 
Go to UniProtKB:  Q8XAL6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8XAL6
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.27 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 145.288α = 90
b = 145.288β = 90
c = 83.456γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
MxDCdata collection
DENZOdata reduction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-01-22
    Type: Initial release
  • Version 1.1: 2014-10-08
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references