› 6lu7

X-ray diffraction
2.16Å resolution

The crystal structure of COVID-19 main protease in complex with an inhibitor N3

Released:
DOI: 10.2210/pdb6lu7/pdb
PDB entry 6lu7 coloured by chain, front view.
PDB entry 6lu7 coloured by chain, side view.
PDB entry 6lu7 coloured by chain, top view.
Source organisms:
Primary publication:
Structure of Mpro from SARS-CoV-2 and discovery of its inhibitors.
Jin Z, Du X, Xu Y, Deng Y, Liu M, Zhao Y, Zhang B, Li X, Zhang L, Peng C, Duan Y, Yu J, Wang L, Yang K, Liu F, Jiang R, Yang X, You T, Liu X, Yang X, Bai F, Liu H, Liu X, Guddat LW, Xu W, Xiao G, Qin C, Shi Z, Jiang H, Rao Z, Yang H
Nature 582 289-293 (2020)
PMID: 32272481

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).
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.
ATP + H(2)O = ADP + phosphate
Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-145085 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
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 BL21(DE3)
UniProt:
  • Canonical: P0DTD1 (Residues: 3264-3569; Coverage: 4%)
Gene names: 1a-1b, rep
Sequence domains: Coronavirus endopeptidase C30
N-[(5-METHYLISOXAZOL-3-YL)CARBONYL]ALANYL-L-VALYL-N~1~-((1R,2Z)-4-(BENZYLOXY)-4-OXO-1-{[(3R)-2-OXOPYRROLIDIN-3-YL]METHYL}BUT-2-ENYL)-L-LEUCINAMIDE Chain: C
Molecule details ›
Chain: C
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 BL17U1
Spacegroup: C2
Unit cell:
a: 97.931Å b: 79.477Å c: 51.803Å
α: 90° β: 114.55° γ: 90°
R-values:
R R work R free
0.204 0.202 0.235
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided

Quick links

Citations

281 review citations

Coronavirus biology and replication: implications for SARS-CoV-2.
V'kovski et al. (2021)
280 more

1314 mentions without citation

SARS-CoV-2: Structure, Biology, and Structure-Based Therapeutics Development.
Wang et al. (2020)
1313 more