1xpu

Structural mechanism of inhibition of the Rho transcription termination factor by the antibiotic 5a-(3-formylphenylsulfanyl)-dihydrobicyclomycin (FPDB)

Method: X-RAY DIFFRACTION Dmax: 149.3 Å Quality: GOOD

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

Rho transcription termination factor

Escherichia coli

UniProt P22869

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–RNA Monomer Protein × 1 RNA 1 PDB declaration: dimeric(2) Consistent with all polymer counts Chain A; UniProt 1–419 Not recorded 5'-R(*CP*UP*CP*UP*CP*UP*CP*U)-3' × 1 MG MAGNESIUM ION × 1 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 6.5;293 K;PEG 8000, Na Cacodylate, NaCl, Glycerol, FOS-Choline-12, pH 6.5, VAPOR DIFFUSION, temperature 293K Resolution 3.05 Å R-free 0.295
2 Protein–RNA Monomer Protein × 1 RNA 1 PDB declaration: dimeric(2) Consistent with all polymer counts Chain B; UniProt 1–419 Not recorded 5'-R(*CP*UP*CP*UP*CP*UP*CP*U)-3' × 1 MG MAGNESIUM ION × 1 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1 FPD 5A-(3-FORMYLPHENYLSULFANYL)-DIHYDROBICYCLOMYCIN × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 6.5;293 K;PEG 8000, Na Cacodylate, NaCl, Glycerol, FOS-Choline-12, pH 6.5, VAPOR DIFFUSION, temperature 293K Resolution 3.05 Å R-free 0.295
3 Protein–RNA Monomer Protein × 1 RNA 1 PDB declaration: dimeric(2) Consistent with all polymer counts Chain C; UniProt 1–419 Not recorded 5'-R(*CP*UP*CP*UP*CP*UP*CP*U)-3' × 1 MG MAGNESIUM ION × 1 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1 FPD 5A-(3-FORMYLPHENYLSULFANYL)-DIHYDROBICYCLOMYCIN × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 6.5;293 K;PEG 8000, Na Cacodylate, NaCl, Glycerol, FOS-Choline-12, pH 6.5, VAPOR DIFFUSION, temperature 293K Resolution 3.05 Å R-free 0.295
4 Protein–RNA Monomer Protein × 1 RNA 1 PDB declaration: dimeric(2) Consistent with all polymer counts Chain D; UniProt 1–419 Not recorded 5'-R(*CP*UP*CP*UP*CP*UP*CP*U)-3' × 1 MG MAGNESIUM ION × 1 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 1 FPD 5A-(3-FORMYLPHENYLSULFANYL)-DIHYDROBICYCLOMYCIN × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 6.5;293 K;PEG 8000, Na Cacodylate, NaCl, Glycerol, FOS-Choline-12, pH 6.5, VAPOR DIFFUSION, temperature 293K Resolution 3.05 Å R-free 0.295
5 Protein–RNA Monomer Protein × 1 RNA 1 PDB declaration: dimeric(2) Consistent with all polymer counts Chain E; UniProt 1–419 Not recorded 5'-R(*CP*UP*CP*UP*CP*UP*CP*U)-3' × 1 MG MAGNESIUM ION × 1 AGS PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER × 2 FPD 5A-(3-FORMYLPHENYLSULFANYL)-DIHYDROBICYCLOMYCIN × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 6.5;293 K;PEG 8000, Na Cacodylate, NaCl, Glycerol, FOS-Choline-12, pH 6.5, VAPOR DIFFUSION, temperature 293K Resolution 3.05 Å R-free 0.295
6 Protein–RNA Monomer Protein × 1 RNA 1 PDB declaration: dimeric(2) Consistent with all polymer counts Chain F; UniProt 1–419 Not recorded 5'-R(*CP*UP*CP*UP*CP*UP*CP*U)-3' × 1 MG MAGNESIUM ION × 1 FPD 5A-(3-FORMYLPHENYLSULFANYL)-DIHYDROBICYCLOMYCIN × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 6.5;293 K;PEG 8000, Na Cacodylate, NaCl, Glycerol, FOS-Choline-12, pH 6.5, VAPOR DIFFUSION, temperature 293K Resolution 3.05 Å R-free 0.295

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.

31 other PDB entries and 42 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name MEMA_METCA
Isoform
PDB entities 2
Chains and sequence ranges Author chain A; PDBConstruct 1–419; UniProt 1–419 Author chain B; PDBConstruct 1–419; UniProt 1–419 Author chain C; PDBConstruct 1–419; UniProt 1–419 Author chain D; PDBConstruct 1–419; UniProt 1–419 Author chain E; PDBConstruct 1–419; UniProt 1–419 Author chain F; PDBConstruct 1–419; UniProt 1–419

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 1xpu

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1xpu
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1xpu
Deposition date deposition_date2004-10-09
Structure title titleStructural mechanism of inhibition of the Rho transcription termination factor by the antibiotic 5a-(3-formylphenylsulfanyl)-dihydrobicyclomycin (FPDB)
Keywords keywordsRho transcription termination factor; 5a-(3-formylphenylsulfanyl)-dihydrobicyclomycin (FPDB); ATPgammaS, TRANSCRIPTION-RNA COMPLEX; TRANSCRIPTION/RNA
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier46.97
Radius of gyration Rg (electron density) rg_electron46.41
Forward intensity I(0) i01195530000.00
Molecular weight molecular_weight283770.0 kDa
Excluded volume excluded_volume354100 ų
Envelope volume envelope_volume502510 ų
Hydration-shell volume shell_volume85653 ų
Envelope diameter envelope_diameter151.1
Shell Rg shell_rg55.48
Envelope Rg envelope_rg45.42
Shape Rg shape_rg46.41
Total Rg total_rg46.73
Total atoms total_atoms19853
Residues n_residues2459
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 dmax149.3
Rg (real space) rg_real46.69
Rg uncertainty (real space) rg_real_error0.93
I(0) (real space) i0_real1.1960e+09
I(0) uncertainty (real space) i0_real_error2.1550e+07
Rg (reciprocal space) rg_reciprocal46.97
I(0) (reciprocal space) i0_reciprocal1196000000.0000
Solution quality estimate total_estimate0.8978
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary65.9
Skewness Skewness skewness0.062
Kurtosis Kurtosis kurtosis-0.630
Angular range angular_range— – 0.1700 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha157200000.0000
Real-space data points n_real_points35
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.917; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.981; Smooth: 0.935

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 30 domains

SCOP 2.08 (18 domains)

Domain ID domain_idd1xpua1
Class classa — All alpha proteins
Fold Fold folda.140 — LEM/SAP HeH motif
Superfamily Superfamily superfamilya.140.3 — Rho N-terminal domain-like
Family Family familya.140.3.1 — Rho termination factor, N-terminal domain
Domain ID domain_idd1xpua2
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.5 — Cold shock DNA-binding domain-like
Domain ID domain_idd1xpua3
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.11 — RecA protein-like (ATPase-domain)
Domain ID domain_idd1xpub1
Class classa — All alpha proteins
Fold Fold folda.140 — LEM/SAP HeH motif
Superfamily Superfamily superfamilya.140.3 — Rho N-terminal domain-like
Family Family familya.140.3.1 — Rho termination factor, N-terminal domain
Domain ID domain_idd1xpub2
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.5 — Cold shock DNA-binding domain-like
Domain ID domain_idd1xpub3
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.11 — RecA protein-like (ATPase-domain)
Domain ID domain_idd1xpuc1
Class classa — All alpha proteins
Fold Fold folda.140 — LEM/SAP HeH motif
Superfamily Superfamily superfamilya.140.3 — Rho N-terminal domain-like
Family Family familya.140.3.1 — Rho termination factor, N-terminal domain
Domain ID domain_idd1xpuc2
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.5 — Cold shock DNA-binding domain-like
Domain ID domain_idd1xpuc3
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.11 — RecA protein-like (ATPase-domain)
Domain ID domain_idd1xpud1
Class classa — All alpha proteins
Fold Fold folda.140 — LEM/SAP HeH motif
Superfamily Superfamily superfamilya.140.3 — Rho N-terminal domain-like
Family Family familya.140.3.1 — Rho termination factor, N-terminal domain
Domain ID domain_idd1xpud2
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.5 — Cold shock DNA-binding domain-like
Domain ID domain_idd1xpud3
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.11 — RecA protein-like (ATPase-domain)
Domain ID domain_idd1xpue1
Class classa — All alpha proteins
Fold Fold folda.140 — LEM/SAP HeH motif
Superfamily Superfamily superfamilya.140.3 — Rho N-terminal domain-like
Family Family familya.140.3.1 — Rho termination factor, N-terminal domain
Domain ID domain_idd1xpue2
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.5 — Cold shock DNA-binding domain-like
Domain ID domain_idd1xpue3
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.11 — RecA protein-like (ATPase-domain)
Domain ID domain_idd1xpuf1
Class classa — All alpha proteins
Fold Fold folda.140 — LEM/SAP HeH motif
Superfamily Superfamily superfamilya.140.3 — Rho N-terminal domain-like
Family Family familya.140.3.1 — Rho termination factor, N-terminal domain
Domain ID domain_idd1xpuf2
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.5 — Cold shock DNA-binding domain-like
Domain ID domain_idd1xpuf3
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.11 — RecA protein-like (ATPase-domain)

CATH v4.4 (12 domains)

Domain ID domain_id1xpuA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id1xpuA02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id1xpuB01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id1xpuB02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id1xpuC01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id1xpuC02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id1xpuD01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id1xpuD02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id1xpuE01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id1xpuE02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id1xpuF01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id1xpuF02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases

8. Citations (1)

9. Files and Curves (10)