4CTI

Escherichia coli EnvZ histidine kinase catalytic part fused to Archaeoglobus fulgidus Af1503 HAMP domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.847 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.258 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystallographic Snapshot of the Escherichia Coli Envz Histidine Kinase in an Active Conformation.

Ferris, H.U.Coles, M.Lupas, A.N.Hartmann, M.D.

(2014) J.Struct.Biol. 186: 376

  • DOI: 10.1016/j.jsb.2014.03.014

  • PubMed Abstract: 
  • Sensor histidine kinases are important sensors of the extracellular environment and relay signals via conformational changes that trigger autophosphorylation of the kinase and subsequent phosphorylation of a response regulator. The exact mechanism an ...

    Sensor histidine kinases are important sensors of the extracellular environment and relay signals via conformational changes that trigger autophosphorylation of the kinase and subsequent phosphorylation of a response regulator. The exact mechanism and the regulation of this protein family are a matter of ongoing investigation. Here we present a crystal structure of a functional chimeric protein encompassing the entire catalytic part of the Escherichia coli EnvZ histidine kinase, fused to the HAMP domain of the Archaeoglobus fulgidus Af1503 receptor. The construct is thus equivalent to the full cytosolic part of EnvZ. The structure shows a putatively active conformation of the catalytic domain and gives insight into how this conformation could be brought about in response to sensory input. Our analysis suggests a sequential flip-flop autokinase mechanism.


    Organizational Affiliation

    Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, D-72076 Tübingen, Germany.,Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, D-72076 Tübingen, Germany. Electronic address: andrei.lupas@tuebingen.mpg.de.,Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, D-72076 Tübingen, Germany. Electronic address: marcus.hartmann@tuebingen.mpg.de.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
OSMOLARITY SENSOR PROTEIN ENVZ, AF1503
A, B, C, D
273Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126)Escherichia coli (strain K12)
This entity is chimeric
Mutation(s): 1 
Gene Names: envZ (ompB, perA, tpo)
EC: 2.7.13.3
Find proteins for O28769 (Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126))
Go to UniProtKB:  O28769
Find proteins for P0AEJ4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEJ4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.847 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.258 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 71.060α = 90.00
b = 76.620β = 107.03
c = 97.370γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
MOLREPphasing
XDSdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-09
    Type: Initial release
  • Version 1.1: 2014-06-11
    Type: Database references
  • Version 1.2: 2017-03-15
    Type: Source and taxonomy