7QQ2

CRYSTAL STRUCTURE OF AS-ISOLATED S321M MUTANT OF THREE-DOMAIN HEME-CU NITRITE REDUCTASE FROM RALSTONIA PICKETTII

• PDB DOI: https://doi.org/10.2210/pdb7QQ2/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Ralstonia pickettii
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2022-01-06 Released: 2023-01-18 
• Deposition Author(s): Petchyam, N., Antonyuk, S., Hasnain, S.S.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.186 
• R-Value Work: 0.153 
• R-Value Observed: 0.155 

Starting Model: experimental

Literature

Structural studies of haem three-domain copper nitrite reductase mutants from Ralstonia pickettii

Petchyam, N., Antonyuk, S., Hasnain, S.S.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 50.74 kDa 
• Atom Count: 3,972 
• Modelled Residue Count: 456 
• Deposited Residue Count: 468 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Copper-containing nitrite reductase	A	468	Ralstonia pickettii	Mutation(s): 1  Gene Names: RP6297_03937 EC: 1.7.2.1
UniProt
Find proteins for I6NAW4 (Ralstonia pickettii) Explore I6NAW4  Go to UniProtKB:  I6NAW4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEC (Subject of Investigation/LOI)	D [auth A]	HEME C C34 H34 Fe N4 O4 HXQIYSLZKNYNMH-LJNAALQVSA-N
CU	B [auth A], C [auth A]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.186 
• R-Value Work: 0.153 
• R-Value Observed: 0.155 
• Space Group: I 2₁ 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 180.14	α = 90
b = 180.14	β = 90
c = 180.14	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-01-18 
Deposition Author(s): Petchyam, N., Antonyuk, S., Hasnain, S.S.

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Funding Organization	Location	Grant Number
Other government	United Kingdom	--

Revision History  

• Version 1.0: 2023-01-18
  Type: Initial release
  
• Version 1.1: 2024-01-31
  Changes: Data collection, Refinement description
• Version 1.2: 2024-10-16
  Changes: Structure summary