4WTG

CRYSTAL STRUCTURE OF HCV NS5B GENOTYPE 2A JFH-1 ISOLATE WITH S15G E86Q E87Q C223H V321I MUTATIONS AND DELTA8 BETA HAIRPIN LOOP DELETION IN COMPLEX WITH SOFOSBUVIR DIPHOSPHATE GS-607596, MN2+ AND SYMMETRICAL PRIMER TEMPLATE 5'-CAAAAUUU


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Structural basis for RNA replication by the hepatitis C virus polymerase.

Appleby, T.C.Perry, J.K.Murakami, E.Barauskas, O.Feng, J.Cho, A.Fox, D.Wetmore, D.R.McGrath, M.E.Ray, A.S.Sofia, M.J.Swaminathan, S.Edwards, T.E.

(2015) Science 347: 771-775

  • DOI: https://doi.org/10.1126/science.1259210
  • Primary Citation of Related Structures:  
    4WT9, 4WTA, 4WTC, 4WTD, 4WTE, 4WTF, 4WTG, 4WTI, 4WTJ, 4WTK, 4WTL, 4WTM

  • PubMed Abstract: 

    Nucleotide analog inhibitors have shown clinical success in the treatment of hepatitis C virus (HCV) infection, despite an incomplete mechanistic understanding of NS5B, the viral RNA-dependent RNA polymerase. Here we study the details of HCV RNA replication by determining crystal structures of stalled polymerase ternary complexes with enzymes, RNA templates, RNA primers, incoming nucleotides, and catalytic metal ions during both primed initiation and elongation of RNA synthesis. Our analysis revealed that highly conserved active-site residues in NS5B position the primer for in-line attack on the incoming nucleotide. A β loop and a C-terminal membrane-anchoring linker occlude the active-site cavity in the apo state, retract in the primed initiation assembly to enforce replication of the HCV genome from the 3' terminus, and vacate the active-site cavity during elongation. We investigated the incorporation of nucleotide analog inhibitors, including the clinically active metabolite formed by sofosbuvir, to elucidate key molecular interactions in the active site.


  • Organizational Affiliation

    Beryllium, 7869 NE Day Road West, Bainbridge Island, WA 98110, USA. todd.appleby@gilead.com tedwards@be4.com.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
RNA-directed RNA polymeraseC [auth A]572Hepatitis C virus JFH-1Mutation(s): 5 
EC: 2.7.7.48
UniProt
Find proteins for Q99IB8 (Hepatitis C virus genotype 2a (isolate JFH-1))
Explore Q99IB8 
Go to UniProtKB:  Q99IB8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99IB8
Sequence Annotations
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  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains LengthOrganismImage
RNA PRIMER TEMPLATE CAAAAUUUA [auth T],
B [auth P]
8synthetic construct
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 140.44α = 90
b = 140.44β = 90
c = 91.62γ = 120
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-02-11
    Type: Initial release
  • Version 1.1: 2015-02-25
    Changes: Database references
  • Version 1.2: 2017-09-27
    Changes: Database references, Derived calculations, Other, Refinement description, Source and taxonomy
  • Version 1.3: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description