6xqb

Electron Microscopy
3.4Å resolution

SARS-CoV-2 RdRp/RNA complex

Released:
Entry authors: Liu B, Shi W, Yang Y
Related structures: EMD-22288

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

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
PDBe Complex ID:
PDB-CPX-145045 (preferred)
Entry contents:
3 distinct polypeptide molecules
1 distinct RNA molecule
Macromolecules (4 distinct):
RNA-directed RNA polymerase nsp12 Chain: A
Molecule details ›
Chain: A
Length: 941 amino acids
Theoretical weight: 107.98 KDa
Source organism: Severe acute respiratory syndrome coronavirus 2
Expression system: Escherichia coli
UniProt:
  • Canonical: P0DTD1 (Residues: 4392-5324; Coverage: 13%)
Gene names: 1a-1b, rep
Sequence domains:
Non-structural protein 8 Chains: B, D
Molecule details ›
Chains: B, D
Length: 207 amino acids
Theoretical weight: 23.11 KDa
Source organism: Severe acute respiratory syndrome coronavirus 2
Expression system: Escherichia coli
UniProt:
  • Canonical: P0DTD1 (Residues: 3942-4140; Coverage: 3%)
Gene names: 1a-1b, rep
Sequence domains: Coronavirus replicase NSP8
Non-structural protein 7 Chain: C
Molecule details ›
Chain: C
Length: 92 amino acids
Theoretical weight: 10.45 KDa
Source organism: Severe acute respiratory syndrome coronavirus 2
Expression system: Escherichia coli
UniProt:
  • Canonical: P0DTD1 (Residues: 3859-3942; Coverage: 1%)
Gene names: 1a-1b, rep
Sequence domains: Coronavirus replicase NSP7
RNA (5'-R(*GP*UP*GP*GP*GP*CP*CP*CP*A)-3') Chains: E, F
Molecule details ›
Chains: E, F
Length: 9 nucleotides
Theoretical weight: 2.89 KDa

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 3.4Å
Relevant EMDB volumes: EMD-22288
Expression system: Escherichia coli