4in2

X-ray diffraction
2.4Å resolution

Structural Basis of Substrate Specificity and Protease Inhibition in Norwalk Virus

Released:

Function and Biology Details

Reactions catalysed:
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
Endopeptidase with a preference for cleavage when the P1 position is occupied by Glu-|- and the P1' position is occupied by Gly-|-
NTP + H(2)O = NDP + phosphate
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-182857 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
3C-like protease Chains: A, B
Molecule details ›
Chains: A, B
Length: 182 amino acids
Theoretical weight: 19.58 KDa
Source organism: Norovirus Hu/1968/US
Expression system: Escherichia coli
UniProt:
  • Canonical: Q83883 (Residues: 1100-1281; Coverage: 10%)
Gene name: ORF1
Sequence domains: Southampton virus-type processing peptidase
Structure domains: Trypsin-like serine proteases

Ligands and Environments

No bound ligands
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: P6122
Unit cell:
a: 97.582Å b: 97.582Å c: 270.458Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.189 0.188 0.214
Expression system: Escherichia coli