Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

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

Biological Assembly Evidence: SAXS

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: SAXS

Macromolecule Content

• Total Structure Weight: 101296.05 
• Atom Count: 7083 
• Residue Count: 936 
• Unique protein chains: 1

6QPX

Crystal structure of nitrite bound Y323A mutant of haem-Cu containing nitrite reductase from Ralstonia pickettii

• DOI: 10.2210/pdb6QPX/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Ralstonia sp. 5_2_56FAA
• Expression System: Escherichia coli
• Mutation(s): 1 


• Deposited: 2019-02-15 Released: 2019-11-06 
• Deposition Author(s): Antonyuk, S.V., Shenoy, R.T., Hedison, T.M., Eady, R.R., Hasnain, S.S., Scrutton, N.S.
• Funding Organization(s): Biotechnology and Biological Sciences Research Council 

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.7 Å
• R-Value Free: 0.203 
• R-Value Work: 0.174 

Literature

Unexpected Roles of a Tether Harboring a Tyrosine Gatekeeper Residue in Modular Nitrite Reductase Catalysis

Hedison, T.M., Shenoy, R.T., Iorgu, A.I., Heyes, D.J., Fisher, K., Wright, G., Hay, S., Eady, R.R., Hasnain, S.S., Scrutton, N.S.

(2019) Acs Catalysis --: --

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Copper-containing nitrite reductase	A, I	468	Ralstonia sp. 5_2_56FAA	Mutation(s): 1  EC: 1.7.2.1
Find proteins for U3G913 (Ralstonia sp. 5_2_56FAA) Go to UniProtKB:  U3G913

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
NO2	A, I	NITRITE ION N O2 IOVCWXUNBOPUCH-UHFFFAOYSA-M
CU	A, I	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N
HEC	A, I	HEME C C34 H34 Fe N4 O4 HXQIYSLZKNYNMH-LJNAALQVSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.7 Å
• R-Value Free: 0.203 
• R-Value Work: 0.174 
• Space Group: H 3

Unit Cell:

Length (Å)	Angle (°)
a = 128.500	α = 90.00
b = 128.500	β = 90.00
c = 172.470	γ = 120.00

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2019-02-15 
• Released Date: 2019-11-06 
• Deposition Author(s): Antonyuk, S.V., Shenoy, R.T., Hedison, T.M., Eady, R.R., Hasnain, S.S., Scrutton, N.S.

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Funding Organization	Location	Grant Number
Biotechnology and Biological Sciences Research Council	United Kingdom	BB/N019380/1
Biotechnology and Biological Sciences Research Council	United Kingdom	BB/N013972/1

Revision History 

• Version 1.0: 2019-11-06
  Type: Initial release