1q31

X-ray diffraction
2.7Å resolution

Crystal Structure of the Tobacco Etch Virus Protease C151A mutant

Released:

Function and Biology Details

Reactions catalysed:
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
Hydrolyzes glutaminyl bonds, and activity is further restricted by preferences for the amino acids in P6 - P1' that vary with the species of potyvirus, e.g. Glu-Xaa-Xaa-Tyr-Xaa-Gln-|-(Ser or Gly) for the enzyme from tobacco etch virus. The natural substrate is the viral polyprotein, but other proteins and oligopeptides containing the appropriate consensus sequence are also cleaved.
Hydrolyzes a Gly-|-Gly bond at its own C-terminus, commonly in the sequence -Tyr-Xaa-Val-Gly-|-Gly, in the processing of the potyviral polyprotein.
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo dimer
Assembly name:
PDBe Complex ID:
PDB-CPX-137890 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Nuclear inclusion protein A Chains: A, B
Molecule details ›
Chains: A, B
Length: 242 amino acids
Theoretical weight: 27.53 KDa
Source organism: Tobacco etch virus
Expression system: Escherichia coli
UniProt:
  • Canonical: P04517 (Residues: 2038-2279; Coverage: 8%)
Sequence domains: Peptidase family C4
Structure domains: Trypsin-like serine proteases

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-2
Spacegroup: C2
Unit cell:
a: 146.587Å b: 41.544Å c: 96.063Å
α: 90° β: 108.95° γ: 90°
R-values:
R R work R free
0.24 0.24 0.302
Expression system: Escherichia coli