8OYQ

Structure of the Histidine Kinase CheA ATP-Binding domain in complex with compound ODDHK13

• PDB DOI: https://doi.org/10.2210/pdb8OYQ/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Thermotoga maritima
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-05-05 Released: 2024-05-15 
• Deposition Author(s): Adhav, A., Marina, A.
• Funding Organization(s): H2020 Marie Curie Actions of the European Commission

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.226 
• R-Value Work: 0.184 

Starting Model: experimental

Literature

Structure of the Histidine Kinase CheA ATP-Binding domain in complex with compound ODDHK13

Adhav, A., Marina, A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 42.45 kDa 
• Atom Count: 2,755 
• Modelled Residue Count: 346 
• Deposited Residue Count: 378 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chemotaxis protein CheA	A [auth B], B [auth A]	189	Thermotoga maritima	Mutation(s): 0  Gene Names: cheA, TM_0702 EC: 2.7.13.3
UniProt
Find proteins for Q56310 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q56310  Go to UniProtKB:  Q56310

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
W6T (Subject of Investigation/LOI)	C [auth B], D [auth A]	quinazolin-2-amine C8 H7 N3 CZAAKPFIWJXPQT-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.226 
• R-Value Work: 0.184 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.962	α = 90
b = 59.201	β = 97.162
c = 66.259	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
REFMAC	refinement
SCALA	data scaling
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-05-15 
Deposition Author(s): Adhav, A., Marina, A.

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Funding Organization	Location	Grant Number
H2020 Marie Curie Actions of the European Commission	European Union	765147

Revision History  

• Version 1.0: 2024-05-15
  Type: Initial release