9KP3 | pdb_00009kp3

Ligand binding domain of Pseudomonas Aeruginosa PAO1 chemoreceptor TlpQ in complex with MHF

• PDB DOI: https://doi.org/10.2210/pdb9KP3/pdb

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


• Deposited: 2024-11-22 Released: 2025-11-26 
• Deposition Author(s): Songying, O., Yanbo, Z., Lei, Z., Xinyu, Q.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.74 Å
• R-Value Free: 
  0.259 (Depositor), 0.257 (DCC) 
• R-Value Work: 
  0.222 (Depositor), 0.222 (DCC) 

Starting Model: experimental

Literature

Ligand binding domain of Pseudomonas Aeruginosa PAO1 chemoreceptor TlpQ in complex with MHF

Songying, O., Yanbo, Z., Lei, Z., Xinyu, Q.

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: 79.45 kDa 
• Atom Count: 4,568 
• Modeled Residue Count: 572 
• Deposited Residue Count: 720 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chemotaxis transducer	A, B	360	Pseudomonas aeruginosa	Mutation(s): 0  Gene Names: pctC_4, pctC_1, CAZ10_23540, CCBH4851_00485, GUL26_11790, IPC1295_00345, PAERUG_P19_London_7_VIM_2_05_10_05471
UniProt
Find proteins for Q9I0I4 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9I0I4  Go to UniProtKB:  Q9I0I4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
4XX (Subject of Investigation/LOI)	D [auth B]	4-hydroxy-5-methylfuran-3(2H)-one C5 H6 O3 DLVYTANECMRFGX-UHFFFAOYSA-N
PEG	C [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.74 Å
• R-Value Free:  0.259 (Depositor), 0.257 (DCC) 
• R-Value Work:  0.222 (Depositor), 0.222 (DCC) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.8	α = 90
b = 124.911	β = 99.41
c = 58.335	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-11-26 
Deposition Author(s): Songying, O., Yanbo, Z., Lei, Z., Xinyu, Q.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2025-11-26
  Type: Initial release