4GNW

Crystal structure of nitrophorin 4 triple mutant complex with ammonia

• PDB DOI: https://doi.org/10.2210/pdb4GNW/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Rhodnius prolixus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2012-08-17 Released: 2013-09-18 
• Deposition Author(s): Weichsel, A., Issaian, A.V., Montfort, W.R.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.15 Å
• R-Value Free: 0.181 
• R-Value Work: 0.162 
• R-Value Observed: 0.163 

Literature

Crystal structures of nitrophorin 4 triple mutant

Issaian, V.A., Weichsel, A., Montfort, W.R.

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 2  

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

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

Macromolecule Content

• Total Structure Weight: 42.04 kDa 
• Atom Count: 3,865 
• Modelled Residue Count: 368 
• Deposited Residue Count: 368 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nitrophorin-4	A, B	184	Rhodnius prolixus	Mutation(s): 3
UniProt
Find proteins for Q94734 (Rhodnius prolixus) Explore Q94734  Go to UniProtKB:  Q94734

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	C [auth A], F [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
PO4	E [auth A], H [auth B]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
NH3	D [auth A], G [auth B]	AMMONIA H3 N QGZKDVFQNNGYKY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.15 Å
• R-Value Free: 0.181 
• R-Value Work: 0.162 
• R-Value Observed: 0.163 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.74	α = 90
b = 69.74	β = 90
c = 141.676	γ = 120

Software Package:

Software Name	Purpose
Blu-Ice	data collection
MOLREP	phasing
REFMAC	refinement
CrystalClear	data reduction
CrystalClear	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-09-18 
Deposition Author(s): Weichsel, A., Issaian, A.V., Montfort, W.R.

Revision History  

• Version 1.0: 2013-09-18
  Type: Initial release
  
• Version 1.1: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description