PDBe 1smy

X-ray diffraction
2.7Å resolution

Structural basis for transcription regulation by alarmone ppGpp

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
Entry contents:
5 distinct polypeptide molecules
Macromolecules (5 distinct):
RNA polymerase sigma factor SigA Chains: F, P
Molecule details ›
Chains: F, P
Length: 423 amino acids
Theoretical weight: 48.57 KDa
Source organism: Thermus thermophilus
UniProt:
  • Canonical: Q5SKW1 (Residues: 1-423; Coverage: 100%)
Gene names: TTHA0532, sigA
Sequence domains:
Structure domains: "winged helix" repressor DNA binding domain
DNA-directed RNA polymerase subunit omega Chains: E, O
Molecule details ›
Chains: E, O
Length: 99 amino acids
Theoretical weight: 11.52 KDa
Source organism: Thermus thermophilus
UniProt:
  • Canonical: Q8RQE7 (Residues: 1-99; Coverage: 100%)
Gene names: TTHA1561, rpoZ
Sequence domains: RNA polymerase Rpb6
Structure domains: Eukaryotic RPB6 RNA polymerase subunit
DNA-directed RNA polymerase subunit alpha Chains: A, B, K, L
Molecule details ›
Chains: A, B, K, L
Length: 315 amino acids
Theoretical weight: 35.06 KDa
Source organism: Thermus thermophilus
UniProt:
  • Canonical: Q5SHR6 (Residues: 1-315; Coverage: 100%)
Gene names: TTHA1664, rpoA
Sequence domains:
Structure domains:
DNA-directed RNA polymerase subunit beta' Chains: D, N
Molecule details ›
Chains: D, N
Length: 1524 amino acids
Theoretical weight: 171 KDa
Source organism: Thermus thermophilus
UniProt:
  • Canonical: Q8RQE8 (Residues: 1-1524; Coverage: 100%)
Gene names: TTHA1812, rpoC
Sequence domains:

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL45PX
Spacegroup: P32
Unit cell:
a: 236.35Å b: 236.35Å c: 249.04Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.266 0.186 0.266