6jij

X-ray diffraction
2.65Å resolution

The Crystal Structure of Main Protease from Mouse Hepatitis Virus A59 in Complex with an inhibitor

Released:

Function and Biology Details

Reactions catalysed:
S-adenosyl-L-methionine + a 5'-(5'-triphosphoguanosine)-[mRNA] = S-adenosyl-L-homocysteine + a 5'-(N(7)-methyl 5'-triphosphoguanosine)-[mRNA]
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]
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
GTP + a 5'-diphospho-[mRNA] = diphosphate + a 5'-(5'-triphosphoguanosine)-[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:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-143132 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
3C-like proteinase nsp5 Chains: A, B, C
Molecule details ›
Chains: A, B, C
Length: 301 amino acids
Theoretical weight: 33.06 KDa
Source organism: Murine hepatitis virus strain A59
Expression system: Escherichia coli
UniProt:
  • Canonical: P0C6X9 (Residues: 3334-3620, 3621-3635; Coverage: 4%)
Gene names: 1a-1b, rep
Sequence domains: Coronavirus endopeptidase C30
Structure domains:
02J-ALA-VAL-LEU-PJE-010 Chains: D, E, F
Molecule details ›
Chains: D, E, F
Length: 6 amino acids
Theoretical weight: 681 Da
Source organism: synthetic construct
Expression system: Not provided

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRF BEAMLINE BL17B1
Spacegroup: C2
Unit cell:
a: 167.787Å b: 64.034Å c: 117.953Å
α: 90° β: 125.97° γ: 90°
R-values:
R R work R free
0.229 0.226 0.27
Expression systems:
  • Escherichia coli
  • Not provided