7n0b

Electron Microscopy
3.9Å resolution

Cryo-EM structure of SARS-CoV-2 nsp10-nsp14 (WT)-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 tetramer (preferred)
PDBe Complex ID:
PDB-CPX-145067 (preferred)
Entry contents:
2 distinct polypeptide molecules
2 distinct RNA molecules
Macromolecules (4 distinct):
Non-structural protein 10 Chain: A
Molecule details ›
Chain: A
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 Chain: B
Molecule details ›
Chain: B
Length: 527 amino acids
Theoretical weight: 59.89 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(*AP*UP*GP*UP*GP*AP*UP*UP*UP*UP*AP*AP*UP*AP*GP*CP*UP*UP*CP*U)-3') Chain: T
RNA (5'-R(*AP*GP*AP*AP*GP*CP*UP*AP*UP*UP*AP*AP*AP*AP*UP*CP*AP*CP*C)-3') Chain: D

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

wwPDB Validation report is not available for this EM entry.
Resolution: 3.9Å
Relevant EMDB volumes: EMD-24102
Expression system: Escherichia coli