9IRE | pdb_00009ire

CRYSTAL STRUCTURE OF Bacillus cereus FERRIC UPTAKE REGULATOR

• PDB DOI: https://doi.org/10.2210/pdb9IRE/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Bacillus cereus VD154
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-07-15 Released: 2025-07-23 
• Deposition Author(s): Gabdulkhakov, A.G., Tishchenko, T.V., Kostareva, O.S.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 
  0.292 (Depositor), 0.291 (DCC) 
• R-Value Work: 
  0.214 (Depositor), 0.214 (DCC) 
• R-Value Observed: 
  0.217 (Depositor) 

Starting Model: experimental

Literature

CRYSTAL STRUCTURE OF Bacillus cereus FERRIC UPTAKE REGULATOR

Gabdulkhakov, A.G., Tishchenko, T.V., Kostareva, O.S.

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 and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 35.63 kDa 
• Atom Count: 2,424 
• Modeled Residue Count: 294 
• Deposited Residue Count: 302 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ferric uptake regulation protein	A, B	151	Bacillus cereus VD154	Mutation(s): 0  Gene Names: IK5_03667
UniProt
Find proteins for A0A158RN89 (Bacillus cereus (strain 03BB102)) Explore A0A158RN89  Go to UniProtKB:  A0A158RN89

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN (Subject of Investigation/LOI)	C [auth A], D [auth A], E [auth B], F [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG (Subject of Investigation/LOI)	G [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free:  0.292 (Depositor), 0.291 (DCC) 
• R-Value Work:  0.214 (Depositor), 0.214 (DCC) 
• R-Value Observed: 0.217 (Depositor) 

Space Group: P 4 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99.009	α = 90
b = 99.009	β = 90
c = 61.253	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-07-23 
Deposition Author(s): Gabdulkhakov, A.G., Tishchenko, T.V., Kostareva, O.S.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-07-23
  Type: Initial release