5T65 | pdb_00005t65

LIGAND BINDING DOMAIN OF PSEUDOMONAS AERUGINOSA PAO1 AMINO ACID CHEMORECEPTOR PCTA IN COMPLEX WITH L-ILE

• PDB DOI: https://doi.org/10.2210/pdb5T65/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Pseudomonas aeruginosa PAO1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2016-09-01 Released: 2017-09-13 
• Deposition Author(s): Gavira, J.A., Rico-Jimenez, M., Ortega, A., Conejero-Muriel, M., Zhulin, I., Krell, T.
• Funding Organization(s): MICINN

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 
  0.204 (Depositor), 0.200 (DCC) 
• R-Value Work: 
  0.166 (Depositor), 0.170 (DCC) 
• R-Value Observed: 
  0.168 (Depositor) 

Starting Model: experimental

Literature

How Bacterial Chemoreceptors Evolve Novel Ligand Specificities

Gavira, J.A., Jimenez-Rico, M., Pineda-Molina, E., Krell, T.

(2020) mBio 

• DOI: https://doi.org/10.1128/mBio.03066-19

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: 59.42 kDa 
• Atom Count: 4,163 
• Modeled Residue Count: 479 
• Deposited Residue Count: 540 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Methyl-accepting chemotaxis protein PctA	A, B	270	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: pctA, PA4309
UniProt
Find proteins for G3XD24 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore G3XD24  Go to UniProtKB:  G3XD24

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ILE	C [auth A], F [auth B]	ISOLEUCINE C6 H13 N O2 AGPKZVBTJJNPAG-WHFBIAKZSA-N
SO4	D [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ACT	E [auth A], G [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free:  0.204 (Depositor), 0.200 (DCC) 
• R-Value Work:  0.166 (Depositor), 0.170 (DCC) 
• R-Value Observed: 0.168 (Depositor) 

Space Group: P 6₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 132.61	α = 90
b = 132.61	β = 90
c = 77.09	γ = 120

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2017-09-13 
Deposition Author(s): Gavira, J.A., Rico-Jimenez, M., Ortega, A., Conejero-Muriel, M., Zhulin, I., Krell, T.

---

Funding Organization	Location	Grant Number
MICINN	Spain	BIO2013-4297-P

Revision History  

• Version 1.0: 2017-09-13
  Type: Initial release
  
• Version 1.1: 2018-12-12
  Changes: Data collection, Structure summary
• Version 1.2: 2020-01-29
  Changes: Database references
• Version 1.3: 2024-01-17
  Changes: Data collection, Database references, Refinement description