PDBe 4yln

X-ray diffraction
5.5Å resolution

E. coli Transcription Initiation Complex - 17-bp spacer and 4-nt RNA

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero nonamer (preferred)
Entry contents:
5 distinct polypeptide molecules
2 distinct DNA molecules
1 distinct RNA molecule
Macromolecules (8 distinct):
DNA-directed RNA polymerase subunit alpha Chains: A, B, G, H, M, N
Molecule details ›
Chains: A, B, G, H, M, N
Length: 242 amino acids
Theoretical weight: 26.9 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: A7ZSI4 (Residues: 1-235; Coverage: 71%)
Gene names: EcE24377A_3778, rpoA
Sequence domains:
DNA-directed RNA polymerase subunit beta Chains: C, I, O
Molecule details ›
Chains: C, I, O
Length: 1342 amino acids
Theoretical weight: 150.82 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: A7ZUK1 (Residues: 1-1342; Coverage: 100%)
Gene names: EcE24377A_4528, rpoB
Sequence domains:
DNA-directed RNA polymerase subunit beta' Chains: D, J, P
Molecule details ›
Chains: D, J, P
Length: 1407 amino acids
Theoretical weight: 155.37 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: A7ZUK2 (Residues: 1-1407; Coverage: 100%)
Gene names: EcE24377A_4529, rpoC
Sequence domains:
DNA-directed RNA polymerase subunit omega Chains: E, K, Q
Molecule details ›
Chains: E, K, Q
Length: 90 amino acids
Theoretical weight: 10.12 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: A7ZTK1 (Residues: 2-91; Coverage: 99%)
Gene names: EcE24377A_4152, rpoZ
Sequence domains: RNA polymerase Rpb6
RNA polymerase sigma factor RpoD Chains: F, L, R
Molecule details ›
Chains: F, L, R
Length: 628 amino acids
Theoretical weight: 72.21 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P00579 (Residues: 1-613; Coverage: 100%)
Gene names: JW3039, alt, b3067, rpoD
Sequence domains:
NT strand DNA (49-MER) Chains: 1, 4, 7
Molecule details ›
Chains: 1, 4, 7
Length: 49 nucleotides
Theoretical weight: 15.02 KDa
T strand DNA (49-MER) Chains: 2, 5, 8
Molecule details ›
Chains: 2, 5, 8
Length: 49 nucleotides
Theoretical weight: 15.23 KDa
RNA (5'-D(*(GTP))-R(P*AP*GP*U)-3') Chains: 3, 6, 9
Molecule details ›
Chains: 3, 6, 9
Length: 4 nucleotides
Theoretical weight: 1.44 KDa

Ligands and Environments

2 bound ligands:

1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X25
Spacegroup: P21
Unit cell:
a: 237.401Å b: 206.052Å c: 248.69Å
α: 90° β: 116.55° γ: 90°
R-values:
R R work R free
0.249 0.245 0.328
Expression system: Escherichia coli BL21(DE3)