7tw8

X-ray diffraction
1.55Å resolution

Structure of nsp14 N7-MethylTransferase domain fused with TELSAM bound to SAH

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:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-145021 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Guanine-N7 methyltransferase nsp14; Transcription factor ETV6 Chain: A
Molecule details ›
Chain: A
Length: 309 amino acids
Theoretical weight: 35.44 KDa
Source organisms: Expression system: Escherichia coli
UniProt:
  • Canonical: P41212 (Residues: 47-123; Coverage: 17%)
  • Canonical: P0DTD1 (Residues: 6225-6452; Coverage: 3%)
Gene names: 1a-1b, ETV6, TEL, TEL1, rep
Sequence domains:

Ligands and Environments


Cofactor: Ligand SAH 1 x SAH
1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS-II BEAMLINE 17-ID-2
Spacegroup: P65
Unit cell:
a: 109.147Å b: 109.147Å c: 48.654Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.177 0.176 0.206
Expression system: Escherichia coli