8yls

X-ray diffraction
1.93Å resolution

Structure of SARS-CoV-2 Mpro in complex with its degrader

Released:
Entry authors: Feng Y, Li W, Cheng SH, Li XB

Function and Biology Details

Reactions catalysed:
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).
TSAVLQ-|-SGFRK-NH(2) and SGVTFQ-|-GKFKK the two peptides corresponding to the two self-cleavage sites of the SARS 3C-like proteinase are the two most reactive peptide substrates. The enzyme exhibits a strong preference for substrates containing Gln at P1 position and Leu at P2 position.
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-144130 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
3C-like proteinase nsp5 Chain: A
Molecule details ›
Chain: A
Length: 306 amino acids
Theoretical weight: 33.83 KDa
Source organism: Severe acute respiratory syndrome coronavirus 2
Expression system: Escherichia coli K-12
UniProt:
  • Canonical: P0DTC1 (Residues: 3264-3569; Coverage: 7%)
Sequence domains: Coronavirus endopeptidase C30

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRF BEAMLINE BL19U1
Spacegroup: C2
Unit cell:
a: 97.12Å b: 80.82Å c: 54.69Å
α: 90° β: 116.5° γ: 90°
R-values:
R R work R free
0.181 0.179 0.222
Expression system: Escherichia coli K-12