9IBA | pdb_00009iba

Crystal structure of Arr-2 in complex with Rifampicin

PDB DOI: https://doi.org/10.2210/pdb9IBA/pdb

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

Deposited: 2025-02-12 Released: 2025-12-17
Deposition Author(s): Alaviuhkola, J., Abdulmajeed, S., Lehtio, L.
Funding Organization(s): Sigrid Juselius Foundation

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.40 Å
R-Value Free:
0.185 (Depositor), 0.184 (DCC)
R-Value Work:
0.143 (Depositor), 0.143 (DCC)

Starting Model: in silico
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Literature

Crystal structure of Arr-2 in complex with Rifampicin

Alaviuhkola, J., Abdulmajeed, S., Lehtio, L.

To be published.

Macromolecule Content

Total Structure Weight: 18.69 kDa
Atom Count: 1,401
Modeled Residue Count: 145
Deposited Residue Count: 151
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ARR-2	A	151	Pseudomonas aeruginosa	Mutation(s): 0 Gene Names: arr-2, arr2
UniProt
Find proteins for O87490 (Pseudomonas aeruginosa) Explore O87490 Go to UniProtKB: O87490
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	O87490
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
RFP (Subject of Investigation/LOI) Query on RFP Download:Ideal Coordinates CCD File SDF format, chain B [auth A] SDF format, chain C [auth A] MOL2 format, chain B [auth A] MOL2 format, chain C [auth A] mmCIF format, chain B [auth A] mmCIF format, chain C [auth A]	B [auth A], C [auth A]	RIFAMPICIN C₄₃ H₅₈ N₄ O₁₂ JQXXHWHPUNPDRT-WLSIYKJHSA-N		Interactions Focus chain B [auth A] Focus chain C [auth A] Interactions & Density Focus chain B [auth A] Focus chain C [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.40 Å
R-Value Free: 0.185 (Depositor), 0.184 (DCC)
R-Value Work: 0.143 (Depositor), 0.143 (DCC)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.26	α = 90
b = 42.97	β = 90
c = 85.49	γ = 90

Software Package:

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

Structure Validation

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Ligand Structure Quality Assessment

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Entry History

& Funding Information

Deposition Data

Released Date: 2025-12-17

Deposition Author(s):

Alaviuhkola, J.

Abdulmajeed, S.

Funding Organization	Location	Grant Number
Sigrid Juselius Foundation	Finland	--

Revision History (Full details and data files)

Version 1.0: 2025-12-17
Type: Initial release

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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.