7e6n

X-ray diffraction
1.84Å resolution

Crystal structure of HCoV-NL63 3C-like protease,pH5.2

Released:
Source organism: Human coronavirus NL63
Primary publication:
Crystal structures of human coronavirus NL63 main protease at different pH values.
Acta Crystallogr F Struct Biol Commun 77 348-355 (2021)
PMID: 34605439

Function and Biology Details

Reaction catalysed:
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).
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
PDBe Complex ID:
PDB-CPX-143068 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
3C-like proteinase Chains: A, B
Molecule details ›
Chains: A, B
Length: 303 amino acids
Theoretical weight: 32.76 KDa
Source organism: Human coronavirus NL63
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: P0C6U6 (Residues: 2940-3242; Coverage: 8%)
Gene name: 1a
Sequence domains: Coronavirus endopeptidase C30

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRF BEAMLINE BL17U1
Spacegroup: P21
Unit cell:
a: 63.35Å b: 83.211Å c: 64.052Å
α: 90° β: 108.65° γ: 90°
R-values:
R R work R free
0.186 0.184 0.217
Expression system: Escherichia coli BL21