4x2y

X-ray diffraction
2.42Å resolution

Crystal structure of a chimeric Murine Norovirus NS6 protease (inactive C139A mutant) in which the P4-P4 prime residues of the cleavage junction in the extended C-terminus have been replaced by the corresponding residues from the NS2-3 junction.

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:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-182353 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
3C-like protease Chains: A, B
Molecule details ›
Chains: A, B
Length: 179 amino acids
Theoretical weight: 18.82 KDa
Source organism: Murine norovirus 1
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q80J95 (Residues: 998-1173; Coverage: 10%)
Gene name: ORF1
Sequence domains: Southampton virus-type processing peptidase
Structure domains: Trypsin-like serine proteases

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU MICROMAX-007 HF
Spacegroup: P1
Unit cell:
a: 35.52Å b: 47.32Å c: 53.07Å
α: 104.45° β: 91.53° γ: 110.61°
R-values:
R R work R free
0.213 0.21 0.262
Expression system: Escherichia coli BL21(DE3)