9sjz

Serial electron diffraction (SerialED) structure of Ribonucleotide reductase R2 from E. coli in its oxidised (met) form (re-oxidised)

Method: ELECTRON CRYSTALLOGRAPHY Dmax: 85.7 Å Quality: EXCELLENT

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

Ribonucleoside-diphosphate reductase 1 subunit beta

Escherichia coli

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 2–376 Chain B; UniProt 2–376 Not recorded FE FE (III) ION × 4 ELECTRON CRYSTALLOGRAPHY cryo-EM buffer:pH 5.5;Crystallization was performed using 23.5 uL protein solution - 25 mM HEPES-Na pH 7.0, 50 mM NaCl and 50 mM sodium dithionite - and 20 uL crystallization buffer containing seeds, 25 percent PEG 3350, 0.1 M Bis-Tris pH 5.5 and 2 mM sodium dithioninte. The crystals were then oxidized through repeated wash with oxygen containing buffer of 12% PEG, 0.05 M Bis-Tris at pH 5.5. cryo-EM vitrification conditions:Cryogen ETHANE Resolution 1.70 Å R-free 0.232

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 126 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RIR2_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–375; UniProt 2–376 Author chain B; 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 9sjz

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9sjz
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9sjz
Deposition date deposition_date2025-09-01
最后修订 last_revision2026-04-22
Structure title titleSerial electron diffraction (SerialED) structure of Ribonucleotide reductase R2 from E. coli in its oxidised (met) form (re-oxidised)
Keywords keywords;serial electron diffraction, SerialED, microcrystal, metalloenzyme, iron, ribonucleotide reductase, electrostatic potential, OXIDOREDUCTASE ;; OXIDOREDUCTASE
Experimental Method methodELECTRON CRYSTALLOGRAPHY

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

Radius of gyration Rg (Guinier) rg_guinier27.23
Radius of gyration Rg (electron density) rg_electron26.04
Forward intensity I(0) i099053000.00
Molecular weight molecular_weight79370.0 kDa
Excluded volume excluded_volume99584 ų
Envelope volume envelope_volume114560 ų
Hydration-shell volume shell_volume35749 ų
Envelope diameter envelope_diameter88.3
Shell Rg shell_rg34.57
Envelope Rg envelope_rg26.29
Shape Rg shape_rg26.03
Total Rg total_rg26.89
Total atoms total_atoms11054
Residues n_residues681
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 dmax85.7
Rg (real space) rg_real27.14
Rg uncertainty (real space) rg_real_error0.53
I(0) (real space) i0_real9.9050e+07
I(0) uncertainty (real space) i0_real_error1.4340e+06
Rg (reciprocal space) rg_reciprocal27.17
I(0) (reciprocal space) i0_reciprocal99060000.0000
Solution quality estimate total_estimate0.9005
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary84.3
Skewness Skewness skewness0.268
Kurtosis Kurtosis kurtosis-0.415
Angular range angular_range— – 0.2900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha31240000.0000
Real-space data points n_real_points59
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.916; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.996; Smooth: 0.957

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)