6bi8

X-ray diffraction
2.29Å resolution

X-ray structure of MERS coronavirus papain-like protease in complex with human ISG15

Released:

Function and Biology Details

Reactions catalysed:
S-adenosyl-L-methionine + a 5'-(N(7)-methyl 5'-triphosphoguanosine)-(ribonucleotide)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N(7)-methyl 5'-triphosphoguanosine)-(2'-O-methyl-ribonucleotide)-[mRNA]
Thiol-dependent hydrolysis of ester, thioester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal).
ATP + H(2)O = ADP + phosphate
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-125467 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
ORF1ab Chains: A, B
Molecule details ›
Chains: A, B
Length: 259 amino acids
Theoretical weight: 28.88 KDa
Source organism: Human betacoronavirus 2c EMC/2012
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: K0BWD0 (Residues: 1544-1801; Coverage: 4%)
Gene name: orf1ab
Sequence domains: Coronavirus papain-like peptidase
Structure domains:
Ubiquitin-like protein ISG15 Chains: C, D
Molecule details ›
Chains: C, D
Length: 156 amino acids
Theoretical weight: 17.09 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P05161 (Residues: 1-156; Coverage: 95%)
Gene names: G1P2, ISG15, UCRP
Sequence domains: Ubiquitin family
Structure domains: Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 21-ID-D
Spacegroup: R3
Unit cell:
a: 148.035Å b: 148.035Å c: 134.189Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.174 0.172 0.215
Expression system: Escherichia coli BL21(DE3)