6w4x

Holocomplex of E. coli class Ia ribonucleotide reductase with GDP and TTP

Method: ELECTRON MICROSCOPY Dmax: 125.3 Å Quality: EXCELLENT

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

Ribonucleoside-diphosphate reductase 1 subunit alpha

Escherichia coli (strain K12)

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 1–761 Chain B; UniProt 1–761 Not recorded Ribonucleoside-diphosphate reductase 1 subunit beta × 2 (P69924) TTP THYMIDINE-5'-TRIPHOSPHATE × 2 MG MAGNESIUM ION × 2 GDP GUANOSINE-5'-DIPHOSPHATE × 1 FEO MU-OXO-DIIRON × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.6 cryo-EM vitrification conditions:Cryogen ETHANE;blot for 4.5 seconds before plunging Resolution 3.60 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.

33 other PDB entries and 104 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

Ribonucleoside-diphosphate reductase 1 subunit beta

Escherichia coli (strain K12)

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain C; UniProt 1–376 Chain D; UniProt 1–376 Non-standard monomer:Yes (specific site not provided by mmCIF) Ribonucleoside-diphosphate reductase 1 subunit alpha × 2 (P00452) TTP THYMIDINE-5'-TRIPHOSPHATE × 2 MG MAGNESIUM ION × 2 GDP GUANOSINE-5'-DIPHOSPHATE × 1 FEO MU-OXO-DIIRON × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.6 cryo-EM vitrification conditions:Cryogen ETHANE;blot for 4.5 seconds before plunging Resolution 3.60 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.

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 2
Chains and sequence ranges Author chain C; PDBConstruct 1–376; UniProt 1–376 Author chain D; PDBConstruct 1–376; UniProt 1–376

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 6w4x

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6w4x
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6w4x
Deposition date deposition_date2020-03-11
Structure title titleHolocomplex of E. coli class Ia ribonucleotide reductase with GDP and TTP
Keywords keywordscomplex, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier40.41
Radius of gyration Rg (electron density) rg_electron39.80
Forward intensity I(0) i0931428000.00
Molecular weight molecular_weight251080.0 kDa
Excluded volume excluded_volume313860 ų
Envelope volume envelope_volume403690 ų
Hydration-shell volume shell_volume79892 ų
Envelope diameter envelope_diameter124.8
Shell Rg shell_rg48.71
Envelope Rg envelope_rg39.46
Shape Rg shape_rg39.82
Total Rg total_rg40.13
Total atoms total_atoms17674
Residues n_residues2188
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 dmax125.3
Rg (real space) rg_real40.21
Rg uncertainty (real space) rg_real_error0.78
I(0) (real space) i0_real9.3140e+08
I(0) uncertainty (real space) i0_real_error1.4530e+07
Rg (reciprocal space) rg_reciprocal40.41
I(0) (reciprocal space) i0_reciprocal931600000.0000
Solution quality estimate total_estimate0.9030
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary51.4
Skewness Skewness skewness0.094
Kurtosis Kurtosis kurtosis-0.595
Angular range angular_range— – 0.1950 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha223600000.0000
Real-space data points n_real_points40
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.932; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.983; Smooth: 0.957

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id6w4xA02
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology70 — Anaerobic Ribonucleotide-triphosphate Reductase Large Chain
Homologous superfamily homologous superfamily20
Domain ID domain_id6w4xB02
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology70 — Anaerobic Ribonucleotide-triphosphate Reductase Large Chain
Homologous superfamily homologous superfamily20
Domain ID domain_id6w4xC00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology620 — Ribonucleotide Reductase, subunit A
Homologous superfamily homologous superfamily20 — Ribonucleotide Reductase, subunit A

8. Citations (1)

9. Files and Curves (10)