8eg7

Cryo-EM structure of pre-consensus elemental paused elongation complex

Method: ELECTRON MICROSCOPY Dmax: 152.4 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

DNA-directed RNA polymerase subunit alpha

Escherichia coli

UniProt P0A7Z6

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 5 DNA 2 RNA 1 PDB declaration: octameric(8) Consistent with all polymer counts Chain G; UniProt 1–234 Chain H; UniProt 1–234 Not recorded non-template DNA × 1 template DNA × 1 RNA × 1 DNA-directed RNA polymerase subunit beta × 1 (P0A8V4) ;DNA-directed RNA polymerase subunit beta' ; × 1 (C3SIA2) DNA-directed RNA polymerase subunit omega × 1 (P0A802) 1N7 CHAPSO × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;blot force 0, blot time 3 s Resolution 3.20 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

32 other PDB entries and 34 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RPOA_ECO57
Isoform
PDB entities 4
Chains and sequence ranges Author chain G; PDBConstruct 1–234; UniProt 1–234 Author chain H; PDBConstruct 1–234; UniProt 1–234

DNA-directed RNA polymerase subunit beta

Escherichia coli

UniProt P0A8V4

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 5 DNA 2 RNA 1 PDB declaration: octameric(8) Consistent with all polymer counts Chain I; UniProt 1–1342 Not recorded non-template DNA × 1 template DNA × 1 RNA × 1 DNA-directed RNA polymerase subunit alpha × 2 (P0A7Z6) ;DNA-directed RNA polymerase subunit beta' ; × 1 (C3SIA2) DNA-directed RNA polymerase subunit omega × 1 (P0A802) 1N7 CHAPSO × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;blot force 0, blot time 3 s Resolution 3.20 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

113 other PDB entries and 115 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RPOB_ECO57
Isoform
PDB entities 5
Chains and sequence ranges Author chain I; PDBConstruct 1–1342; UniProt 1–1342

;DNA-directed RNA polymerase subunit beta' ;

Escherichia coli

UniProt C3SIA2

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 5 DNA 2 RNA 1 PDB declaration: octameric(8) Consistent with all polymer counts Chain J; UniProt 2–1407 Not recorded non-template DNA × 1 template DNA × 1 RNA × 1 DNA-directed RNA polymerase subunit alpha × 2 (P0A7Z6) DNA-directed RNA polymerase subunit beta × 1 (P0A8V4) DNA-directed RNA polymerase subunit omega × 1 (P0A802) 1N7 CHAPSO × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;blot force 0, blot time 3 s Resolution 3.20 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

26 other PDB entries and 26 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name C3SIA2_ECOLX
Isoform
PDB entities 6
Chains and sequence ranges Author chain J; PDBConstruct 2–1407; UniProt 2–1407

DNA-directed RNA polymerase subunit omega

Escherichia coli

UniProt P0A802

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 5 DNA 2 RNA 1 PDB declaration: octameric(8) Consistent with all polymer counts Chain K; UniProt 1–91 Not recorded non-template DNA × 1 template DNA × 1 RNA × 1 DNA-directed RNA polymerase subunit alpha × 2 (P0A7Z6) DNA-directed RNA polymerase subunit beta × 1 (P0A8V4) ;DNA-directed RNA polymerase subunit beta' ; × 1 (C3SIA2) 1N7 CHAPSO × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;blot force 0, blot time 3 s Resolution 3.20 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

59 other PDB entries and 61 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RPOZ_ECO57
Isoform
PDB entities 7
Chains and sequence ranges Author chain K; PDBConstruct 1–91; UniProt 1–91

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 8eg7

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8eg7
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8eg7
Deposition date deposition_date2022-09-11
Structure title titleCryo-EM structure of pre-consensus elemental paused elongation complex
Keywords keywords;RNA polymerase, cryo-EM structure, elemental pause, Escherichia coli, TRANSCRIPTION, TRANSFERASE-DNA-RNA complex, transcriptional regulation, transcriptional pausing ;; TRANSCRIPTION, TRANSFERASE/DNA/RNA
Experimental Method methodELECTRON MICROSCOPY

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier47.43
Radius of gyration Rg (electron density) rg_electron47.17
Forward intensity I(0) i02188730000.00
Molecular weight molecular_weight374300.0 kDa
Excluded volume excluded_volume462680 ų
Envelope volume envelope_volume660450 ų
Hydration-shell volume shell_volume109820 ų
Envelope diameter envelope_diameter164.2
Shell Rg shell_rg55.82
Envelope Rg envelope_rg47.26
Shape Rg shape_rg47.19
Total Rg total_rg47.41
Total atoms total_atoms26200
Residues n_residues3239
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax152.4
Rg (real space) rg_real47.20
Rg uncertainty (real space) rg_real_error0.86
I(0) (real space) i0_real2.1890e+09
I(0) uncertainty (real space) i0_real_error4.2720e+07
Rg (reciprocal space) rg_reciprocal47.43
I(0) (reciprocal space) i0_reciprocal2189000000.0000
Solution quality estimate total_estimate0.8763
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary60.0
Skewness Skewness skewness0.253
Kurtosis Kurtosis kurtosis-0.336
Angular range angular_range— – 0.1650 −1
Current regularization parameter α current_alpha0.0002
Highest regularization parameter α highest_alpha487500000.0000
Real-space data points n_real_points34
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.860; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.965; Smooth: 0.843

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (10)

7. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id8eg7G01
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology120 — RNA Polymerase Alpha Subunit; Chain A, domain 2
Homologous superfamily homologous superfamily12 — DNA-directed RNA polymerase, insert domain
Domain ID domain_id8eg7H01
Class class2 — Mainly Beta
Architecture architecture170 — Beta Complex
Topology topology120 — RNA Polymerase Alpha Subunit; Chain A, domain 2
Homologous superfamily homologous superfamily12 — DNA-directed RNA polymerase, insert domain
Domain ID domain_id8eg7J01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology132 — Topoisomerase I; Chain A, domain 4
Homologous superfamily homologous superfamily30 — RNA polymerase Rpb1 funnel domain

8. Citations (1)

9. Files and Curves (10)