9F03 | pdb_00009f03

mRhubarb720-WT

• PDB DOI: https://doi.org/10.2210/pdb9F03/pdb

• Classification: FLUORESCENT PROTEIN
• Organism(s): Rhodopseudomonas palustris
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2024-04-15 Released: 2025-10-29 
• Deposition Author(s): Aksakal, O., Rizkallah, P.J., Warren, A., Lipka-Lloyd, M., Jones, D.D.
• Funding Organization(s): Engineering and Physical Sciences Research Council

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 
  0.309 (Depositor), 0.298 (DCC) 
• R-Value Work: 
  0.225 (Depositor), 0.230 (DCC) 
• R-Value Observed: 
  0.230 (Depositor) 

Literature

Monomeric rhubarb fluorescent protein

Aksakal, O., Rizkallah, P.J., Jones, D.D.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: assay for oligomerization

Macromolecule Content 

• Total Structure Weight: 33.88 kDa 
• Atom Count: 2,382 
• Modeled Residue Count: 304 
• Deposited Residue Count: 304 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
mRhubarb720 fluorescent protein	A	304	Rhodopseudomonas palustris	Mutation(s): 7  Gene Names: iRFP
UniProt
Find proteins for G1FNL7 (Rhodopseudomonas palustris) Explore G1FNL7  Go to UniProtKB:  G1FNL7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LBV (Subject of Investigation/LOI)	B [auth A]	3-[2-[(Z)-[3-(2-carboxyethyl)-5-[(Z)-(4-ethenyl-3-methyl-5-oxidanylidene-pyrrol-2-ylidene)methyl]-4-methyl-pyrrol-1-ium -2-ylidene]methyl]-5-[(Z)-[(3E)-3-ethylidene-4-methyl-5-oxidanylidene-pyrrolidin-2-ylidene]methyl]-4-methyl-1H-pyrrol-3- yl]propanoic acid C33 H37 N4 O6 DKMLMZVDTGOEGU-ISEYCTJISA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free:  0.309 (Depositor), 0.298 (DCC) 
• R-Value Work:  0.225 (Depositor), 0.230 (DCC) 
• R-Value Observed: 0.230 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.845	α = 90
b = 58.845	β = 90
c = 185.883	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
xia2	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-10-29 
Deposition Author(s): Aksakal, O., Rizkallah, P.J., Warren, A., Lipka-Lloyd, M., Jones, D.D.

---

Funding Organization	Location	Grant Number
Engineering and Physical Sciences Research Council	United Kingdom	--

Revision History  

• Version 1.0: 2025-10-29
  Type: Initial release
  
• Version 1.1: 2025-11-19
  Changes: Data collection