7n0d

Electron Microscopy
2.5Å resolution

Cryo-EM structure of the tetrameric form of SARS-CoV-2 nsp10-nsp14 (E191A)-RNA complex

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).
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 tetradecamer (preferred)
PDBe Complex ID:
PDB-CPX-145107 (preferred)
Entry contents:
2 distinct polypeptide molecules
3 distinct RNA molecules
Macromolecules (5 distinct):
Non-structural protein 10 Chains: A, C, E, G
Molecule details ›
Chains: A, C, E, G
Length: 139 amino acids
Theoretical weight: 14.8 KDa
Source organism: Severe acute respiratory syndrome coronavirus 2
Expression system: Escherichia coli
UniProt:
  • Canonical: P0DTD1 (Residues: 4254-4392; Coverage: 2%)
Gene names: 1a-1b, rep
Sequence domains: Coronavirus RNA synthesis protein NSP10
Guanine-N7 methyltransferase nsp14 Chains: B, D, F, H
Molecule details ›
Chains: B, D, F, H
Length: 527 amino acids
Theoretical weight: 59.83 KDa
Source organism: Severe acute respiratory syndrome coronavirus 2
Expression system: Escherichia coli
UniProt:
  • Canonical: P0DTD1 (Residues: 5926-6452; Coverage: 7%)
Gene names: 1a-1b, rep
Sequence domains: Coronavirus proofreading exoribonuclease
RNA (5'-R(*GP*GP*GP*GP*AP*UP*GP*UP*GP*AP*UP*UP*UP*UP*AP*AP*UP*AP*G)-3') Chains: I, T
Molecule details ›
Chains: I, T
Length: 27 nucleotides
Theoretical weight: 8.61 KDa
RNA (5'-R(*CP*UP*AP*UP*UP*AP*AP*AP*AP*UP*CP*AP*CP*C)-3') Chains: K, L
Molecule details ›
Chains: K, L
Length: 22 nucleotides
Theoretical weight: 7.03 KDa
RNA (5'-R(*CP*CP*CP*CP*C)-3') Chains: J, P
Molecule details ›
Chains: J, P
Length: 5 nucleotides
Theoretical weight: 1.48 KDa

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 2.5Å
Relevant EMDB volumes: EMD-24104
Expression system: Escherichia coli