8ap1

Electron Microscopy
3.47Å resolution

Cryo-EM structure of yeast mitochondrial RNA polymerase transcription initiation complex with two GTP molecules poised for de novo initiation (IC2)

Released:

Function and Biology Details

Reaction catalysed:
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1)
Biochemical function:
Biological process:

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-227059 (preferred)
Entry contents:
2 distinct polypeptide molecules
2 distinct DNA molecules
Macromolecules (4 distinct):
Mitochondrial transcription factor 1 Chain: B
Molecule details ›
Chain: B
Length: 354 amino acids
Theoretical weight: 41.15 KDa
Source organism: Saccharomyces cerevisiae S288C
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P14908 (Residues: 2-341; Coverage: 100%)
Gene names: MTF1, YM9959.10, YMR228W
Sequence domains: Ribosomal RNA adenine dimethylase
DNA-directed RNA polymerase, mitochondrial Chain: A
Molecule details ›
Chain: A
Length: 1262 amino acids
Theoretical weight: 143.28 KDa
Source organism: Saccharomyces cerevisiae S288C
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P13433 (Residues: 100-1351; Coverage: 93%)
Gene names: RPO41, YFL036W
Sequence domains:
Non-template DNA (33-MER) Chain: N
Molecule details ›
Chain: N
Length: 33 nucleotides
Theoretical weight: 10.25 KDa
Template DNA (33-MER) Chain: T
Molecule details ›
Chain: T
Length: 33 nucleotides
Theoretical weight: 10.05 KDa

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 3.47Å
Relevant EMDB volumes: EMD-15556
Expression system: Escherichia coli BL21(DE3)