9W3A | pdb_00009w3a

Crystal structure of PfiAT toxin-antitoxin complex

PDB DOI: https://doi.org/10.2210/pdb9W3A/pdb

Classification: TOXIN
Organism(s): Pseudomonas aeruginosa
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-07-29 Released: 2026-02-11
Deposition Author(s): Wang, X.X., Chen, R.
Funding Organization(s): National Science Foundation (NSF, China)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.30 Å
R-Value Free:
0.250 (Depositor), 0.250 (DCC)
R-Value Work:
0.202 (Depositor), 0.203 (DCC)

Starting Model: in silico
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wwPDB Validation 3D Report Full Report

This is version 1.0 of the entry. See complete history.

Literature

Phosphorylation of PfiA Modulates Pf4 Phage Production through PfiA/PfiT Stoichiometric Reconfiguration in Pseudomonas aeruginosa

Chen, R., Zhang, Y., Guo, Y., Gu, J., Lin, S., Wang, X.

(2026) Sci Adv

Macromolecule Content

Total Structure Weight: 108.74 kDa
Atom Count: 7,129
Modeled Residue Count: 875
Deposited Residue Count: 958
Unique protein chains: 2

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PfiT protein 1	A, C [auth B], E [auth C], G [auth D]	115	Pseudomonas aeruginosa	Mutation(s): 0
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PfiA protein 1	B [auth E] D [auth F] F [auth J] H I [auth G] B [auth E], D [auth F], F [auth J], H, I [auth G], J [auth I]	83	Pseudomonas aeruginosa	Mutation(s): 0
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.30 Å
R-Value Free: 0.250 (Depositor), 0.250 (DCC)
R-Value Work: 0.202 (Depositor), 0.203 (DCC)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 73.171	α = 90
b = 107.408	β = 90
c = 125.722	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Released Date: 2026-02-11

Deposition Author(s):

Funding Organization	Location	Grant Number
National Science Foundation (NSF, China)	China	42188102
National Science Foundation (NSF, China)	China	32470032
National Science Foundation (NSF, China)	China	91951203
National Science Foundation (NSF, China)	China	31625001

Revision History (Full details and data files)

Version 1.0: 2026-02-11
Type: Initial release

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.