9CFS | pdb_00009cfs

Structure of a 150% lengthened variant of the E. coli ROP protein

• PDB DOI: https://doi.org/10.2210/pdb9CFS/pdb

• Classification: RNA BINDING PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-06-27 Released: 2025-07-02 
• Deposition Author(s): Gallagher, D.T., Shakya, A.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 
  0.256 (Depositor), 0.296 (DCC) 
• R-Value Work: 
  0.199 (Depositor), 0.234 (DCC) 
• R-Value Observed: 
  0.202 (Depositor) 

Starting Model: in silico

Literature

Structure of an engineered 150% lengthened variant of the E.coli ROP protein

Gallagher, D.T., Shakya, A.

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)

Macromolecule Content 

• Total Structure Weight: 21.66 kDa 
• Atom Count: 1,502 
• Modeled Residue Count: 170 
• Deposited Residue Count: 186 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Long regulatory protein rop	A, B	93	Escherichia coli	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NI	C [auth B]	NICKEL (II) ION Ni VEQPNABPJHWNSG-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free:  0.256 (Depositor), 0.296 (DCC) 
• R-Value Work:  0.199 (Depositor), 0.234 (DCC) 
• R-Value Observed: 0.202 (Depositor) 

Space Group: P 3₂

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.253	α = 90
b = 43.253	β = 90
c = 84.158	γ = 120

Software Package:

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

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-07-02 
Deposition Author(s): Gallagher, D.T., Shakya, A.

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Funding Organization	Location	Grant Number
Other government		--

Revision History  

• Version 1.0: 2025-07-02
  Type: Initial release