6ffa

X-ray diffraction
1.5Å resolution

FMDV Leader protease bound to substrate ISG15

Released:

Function and Biology Details

Reactions catalysed:
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
Selective cleavage of Gln-|-Gly bond in the poliovirus polyprotein. In other picornavirus reactions Glu may be substituted for Gln, and Ser or Thr for Gly.
Autocatalytically cleaves itself from the polyprotein of the foot-and-mouth disease virus by hydrolysis of a Lys-|-Gly bond, but then cleaves host cell initiation factor eIF-4G at bonds -Gly-|-Arg- and -Lys-|-Arg-.
NTP + H(2)O = NDP + phosphate
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-136752 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Leader protease Chain: A
Molecule details ›
Chain: A
Length: 167 amino acids
Theoretical weight: 19.06 KDa
Source organism: Foot-and-mouth disease virus
Expression system: Escherichia coli
UniProt:
  • Canonical: P03305 (Residues: 29-195; Coverage: 7%)
Sequence domains: Foot-and-mouth virus L-proteinase
Structure domains: Cysteine proteinases
Ubiquitin-like protein ISG15 Chain: B
Molecule details ›
Chain: B
Length: 78 amino acids
Theoretical weight: 8.81 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P05161 (Residues: 79-155; Coverage: 47%)
Gene names: G1P2, ISG15, UCRP
Sequence domains: Ubiquitin family
Structure domains: Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: DIAMOND BEAMLINE I04
Spacegroup: C2
Unit cell:
a: 114.188Å b: 40.352Å c: 58.052Å
α: 90° β: 91.81° γ: 90°
R-values:
R R work R free
0.166 0.165 0.186
Expression system: Escherichia coli