4b73

X-ray diffraction
2.5Å resolution

Discovery of an allosteric mechanism for the regulation of HCV NS3 protein function

Released:

Function and Biology Details

Reactions catalysed:
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
Hydrolysis of four peptide bonds in the viral precursor polyprotein, commonly with Asp or Glu in the P6 position, Cys or Thr in P1 and Ser or Ala in P1'.
NTP + H(2)O = NDP + phosphate
ATP + H(2)O = ADP + phosphate
Biochemical function:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
PDBe Complex ID:
PDB-CPX-150815 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Serine protease/helicase NS3 Chains: A, B
Molecule details ›
Chains: A, B
Length: 666 amino acids
Theoretical weight: 70.87 KDa
Source organism: Hepatitis C virus (isolate BK)
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P26663 (Residues: 1013-1025, 1029-1657; Coverage: 21%)
Sequence domains:
Structure domains:

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-1
Spacegroup: P212121
Unit cell:
a: 90.842Å b: 109.496Å c: 141.024Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.187 0.183 0.264
Expression system: Escherichia coli BL21(DE3)