6C2N

Crystal structure of HCV NS3/4A double mutant variant Y56H/D168A in complex with danoprevir

• PDB DOI: https://doi.org/10.2210/pdb6C2N/pdb

• Classification: HYDROLASE
• Organism(s): hepatitis C virus genotype 1a
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2018-01-08 Released: 2019-01-16 
• Deposition Author(s): Matthew, A.N., Schiffer, C.A.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.190 
• R-Value Work: 0.162 
• R-Value Observed: 0.164 

Starting Model: experimental

Literature

Clinical signature variant of HCV NS3/4A protease uses a novel mechanism to confer resistance

Matthew, A.N., Schiffer, C.A.

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: gel filtration

Macromolecule Content

• Total Structure Weight: 22.33 kDa 
• Atom Count: 1,682 
• Modelled Residue Count: 198 
• Deposited Residue Count: 203 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NS4A COFACTOR-NS3 PROTEIN CHIMERA	A	203	hepatitis C virus genotype 1a	Mutation(s): 17
UniProt
Find proteins for A8DG50 (hepatitis C virus genotype 1a) Explore A8DG50  Go to UniProtKB:  A8DG50

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TSV	D [auth A]	(2R,6S,12Z,13aS,14aR,16aS)-6-[(tert-butoxycarbonyl)amino]-14a-[(cyclopropylsulfonyl)carbamoyl]-5,16-dioxo-1,2,3,5,6,7,8 ,9,10,11,13a,14,14a,15,16,16a-hexadecahydrocyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecin-2-yl 4-fluoro-2H-isoindole-2-carboxylate C35 H44 F N5 O9 S YUWURHBDLJOUAP-JSZLBQEHSA-N
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.190 
• R-Value Work: 0.162 
• R-Value Observed: 0.164 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.964	α = 90
b = 55.355	β = 90
c = 58.891	γ = 90

Software Package:

Software Name	Purpose
HKL-3000	data scaling
PHASER	phasing
PHENIX	refinement
Coot	model building
HKL-3000	data collection
HKL-3000	data processing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-01-16 
Deposition Author(s): Matthew, A.N., Schiffer, C.A.

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	R01 AI085051
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	F31 GM119345

Revision History  

• Version 1.0: 2019-01-16
  Type: Initial release
  
• Version 1.1: 2019-02-20
  Changes: Author supporting evidence, Data collection
• Version 1.2: 2019-12-18
  Changes: Author supporting evidence
• Version 1.3: 2023-10-04
  Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary