4erp

Crystal structure of a gemcitabine-diphosphate inhibited E. coli class Ia ribonucleotide reductase complex

Method: X-RAY DIFFRACTION Dmax: 223.7 Å Quality: GOOD

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

Ribonucleoside-diphosphate reductase 1 subunit alpha

Escherichia coli K-12

UniProt P00452

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 heterocomplex Heteromer Protein × 8 PDB declaration: octameric(8) Consistent with protein copy count Chain A; UniProt 1–761 Chain B; UniProt 1–761 Not recorded Ribonucleoside-diphosphate reductase 1 subunit beta × 4 (P69924) ATP ADENOSINE-5'-TRIPHOSPHATE × 4 FEO MU-OXO-DIIRON × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;Precipitant solution: 25% PEG 3350, 0.1 M HEPES pH 7.5, 0.2 M ammonium acetate, 5% glycerol mixed 2:1 with protein and streak seeded from crystals grown under similar conditions. , VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 4.45 Å R-free 0.267
2 Protein heterocomplex Heteromer Protein × 8 PDB declaration: octameric(8) Consistent with protein copy count Chain C; UniProt 1–761 Chain D; UniProt 1–761 Not recorded Ribonucleoside-diphosphate reductase 1 subunit beta × 4 (P69924) ATP ADENOSINE-5'-TRIPHOSPHATE × 4 FEO MU-OXO-DIIRON × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;Precipitant solution: 25% PEG 3350, 0.1 M HEPES pH 7.5, 0.2 M ammonium acetate, 5% glycerol mixed 2:1 with protein and streak seeded from crystals grown under similar conditions. , VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 4.45 Å R-free 0.267

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.

33 other PDB entries and 103 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RIR1_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–761; UniProt 1–761 Author chain B; PDBConstruct 1–761; UniProt 1–761 Author chain C; PDBConstruct 1–761; UniProt 1–761 Author chain D; PDBConstruct 1–761; UniProt 1–761

Ribonucleoside-diphosphate reductase 1 subunit beta

Escherichia coli K-12

UniProt P69924

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 heterocomplex Heteromer Protein × 8 PDB declaration: octameric(8) Consistent with protein copy count Chain F; UniProt 2–376 Chain H; UniProt 2–376 Not recorded Ribonucleoside-diphosphate reductase 1 subunit alpha × 4 (P00452) ATP ADENOSINE-5'-TRIPHOSPHATE × 4 FEO MU-OXO-DIIRON × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;Precipitant solution: 25% PEG 3350, 0.1 M HEPES pH 7.5, 0.2 M ammonium acetate, 5% glycerol mixed 2:1 with protein and streak seeded from crystals grown under similar conditions. , VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 4.45 Å R-free 0.267
2 Protein heterocomplex Heteromer Protein × 8 PDB declaration: octameric(8) Consistent with protein copy count Chain E; UniProt 2–376 Chain G; UniProt 2–376 Not recorded Ribonucleoside-diphosphate reductase 1 subunit alpha × 4 (P00452) ATP ADENOSINE-5'-TRIPHOSPHATE × 4 FEO MU-OXO-DIIRON × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;Precipitant solution: 25% PEG 3350, 0.1 M HEPES pH 7.5, 0.2 M ammonium acetate, 5% glycerol mixed 2:1 with protein and streak seeded from crystals grown under similar conditions. , VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 4.45 Å R-free 0.267

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.

62 other PDB entries and 125 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RIR2_ECOLI
Isoform
PDB entities 2
Chains and sequence ranges Author chain E; PDBConstruct 1–375; UniProt 2–376 Author chain F; PDBConstruct 1–375; UniProt 2–376 Author chain G; PDBConstruct 1–375; UniProt 2–376 Author chain H; PDBConstruct 1–375; UniProt 2–376

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 4erp

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4erp
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4erp
Deposition date deposition_date2012-04-20
Structure title titleCrystal structure of a gemcitabine-diphosphate inhibited E. coli class Ia ribonucleotide reductase complex
Keywords keywords;Protein-protein complex, alpha/beta barrel, atp cone, diiron center, oxidoreductase, RNR alpha, RNR beta, thioredoxin, Ribonucleotide reduction, Cytosol ;; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier66.00
Radius of gyration Rg (electron density) rg_electron67.01
Forward intensity I(0) i03511280000.00
Molecular weight molecular_weight499840.0 kDa
Excluded volume excluded_volume625080 ų
Envelope volume envelope_volume919180 ų
Hydration-shell volume shell_volume119760 ų
Envelope diameter envelope_diameter273.7
Shell Rg shell_rg62.79
Envelope Rg envelope_rg66.56
Shape Rg shape_rg67.02
Total Rg total_rg66.92
Total atoms total_atoms35197
Residues n_residues4363
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 dmax223.7
Rg (real space) rg_real66.63
Rg uncertainty (real space) rg_real_error1.86
I(0) (real space) i0_real3.5070e+09
I(0) uncertainty (real space) i0_real_error7.1800e+07
Rg (reciprocal space) rg_reciprocal65.24
I(0) (reciprocal space) i0_reciprocal3501000000.0000
Solution quality estimate total_estimate0.8109
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary74.6
Skewness Skewness skewness0.642
Kurtosis Kurtosis kurtosis0.091
Angular range angular_range— – 0.1200 −1
Current regularization parameter α current_alpha0.0034
Highest regularization parameter α highest_alpha118500000.0000
Real-space data points n_real_points25
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.723; Stabil: 0.997; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.375

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)