5wwp

X-ray diffraction
3Å resolution

Crystal structure of Middle East respiratory syndrome coronavirus helicase (MERS-CoV nsp13)

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:
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-516436 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
ORF1ab Chains: A, B
Molecule details ›
Chains: A, B
Length: 600 amino acids
Theoretical weight: 66.34 KDa
Source organism: Human betacoronavirus 2c EMC/2012
Expression system: Trichoplusia ni
UniProt:
  • Canonical: K0BWD0 (Residues: 5311-5908; Coverage: 8%)
Gene name: orf1ab
Sequence domains:

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRF BEAMLINE BL19U1
Spacegroup: P6122
Unit cell:
a: 185.675Å b: 185.675Å c: 185.087Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.234 0.232 0.277
Expression system: Trichoplusia ni