8P3R | pdb_00008p3r

Structure of the Histidine Kinase CheA ATP-Binding domain in complex with compound ODDHK4

• PDB DOI: https://doi.org/10.2210/pdb8P3R/pdb

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


• Deposited: 2023-05-18 Released: 2024-06-12 
• Deposition Author(s): Adhav, A., Marina, A.
• Funding Organization(s): H2020 Marie Curie Actions of the European Commission

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.229 (Depositor), 0.230 (DCC) 
• R-Value Work: 
  0.180 (Depositor), 0.190 (DCC) 

Starting Model: experimental

Literature

Structure of the Histidine Kinase CheA ATP-Binding domain in complex with compound ODDHK4

Adhav, A., Marina, A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 42.4 kDa 
• Atom Count: 2,766 
• Modeled Residue Count: 348 
• Deposited Residue Count: 378 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chemotaxis protein CheA	A, B	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
WUT (Subject of Investigation/LOI)	C [auth A], D [auth B]	9~{H}-purine C5 H4 N4 KDCGOANMDULRCW-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.229 (Depositor), 0.230 (DCC) 
• R-Value Work:  0.180 (Depositor), 0.190 (DCC) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.088	α = 90
b = 59.182	β = 97.118
c = 66.766	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-06-12 
Deposition Author(s): Adhav, A., Marina, A.

---

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

Revision History  

• Version 1.0: 2024-06-12
  Type: Initial release