1I5D

STRUCTURE OF CHEA DOMAIN P4 IN COMPLEX WITH TNP-ATP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.263 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Nucleotide binding by the histidine kinase CheA.

Bilwes, A.M.Quezada, C.M.Croal, L.R.Crane, B.R.Simon, M.I.

(2001) Nat.Struct.Mol.Biol. 8: 353-360

  • DOI: 10.1038/86243
  • Primary Citation of Related Structures:  1I58, 1I59, 1I5A, 1I5B, 1I5C

  • PubMed Abstract: 
  • To probe the structural basis for protein histidine kinase (PHK) catalytic activity and the prospects for PHK-specific inhibitor design, we report the crystal structures for the nucleotide binding domain of Thermotoga maritima CheA with ADP and three ...

    To probe the structural basis for protein histidine kinase (PHK) catalytic activity and the prospects for PHK-specific inhibitor design, we report the crystal structures for the nucleotide binding domain of Thermotoga maritima CheA with ADP and three ATP analogs (ADPNP, ADPCP and TNP-ATP) bound with either Mg(2+) or Mn(2+). The conformation of ADPNP bound to CheA and related ATPases differs from that reported in the ADPNP complex of PHK EnvZ. Interactions of the active site with the nucleotide gamma-phosphate and its associated Mg(2+) ion are linked to conformational changes in an ATP-lid that could mediate recognition of the substrate domain. The inhibitor TNP-ATP binds CheA with its phosphates in a nonproductive conformation and its adenine and trinitrophenyl groups in two adjacent binding pockets. The trinitrophenyl interaction may be exploited for designing CheA-targeted drugs that would not interfere with host ATPases.


    Organizational Affiliation

    Division of Biology, California Institute of Technology, 1200 East California Blvd., Pasadena, California 91125, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHEMOTAXIS PROTEIN CHEA
A
191Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)Gene Names: cheA
EC: 2.7.13.3
Find proteins for Q56310 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  Q56310
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
128
Query on 128

Download SDF File 
Download CCD File 
A
SPIRO(2,4,6-TRINITROBENZENE[1,2A]-2O',3O'-METHYLENE-ADENINE-TRIPHOSPHATE
C16 H17 N8 O19 P3
XFMMHXLUHKBKQE-UHEGPQQHSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
128Kd: <10 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.263 
  • Space Group: P 43 2 2
Unit Cell:
Length (Å)Angle (°)
a = 85.190α = 90.00
b = 85.190β = 90.00
c = 73.770γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-08-26
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2015-09-23
    Type: Non-polymer description