9q1j

Cryo-EM structure of SARS-CoV-2 nsp10-nsp14 E191A mutant-T20P14-R complex

Method: ELECTRON MICROSCOPY Dmax: 150.2 Å Quality: GOOD

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

Non-structural protein 10

Severe acute respiratory syndrome coronavirus 2

UniProt P0DTD1

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 Homooligomer Protein × 8 RNA 4 PDB declaration: dodecameric(12) Consistent with all polymer counts Chain A; UniProt 4254–4392 Chain B; UniProt 5926–6452 Chain C; UniProt 4254–4392 Chain D; UniProt 5926–6452 Chain G; UniProt 4254–4392 Chain H; UniProt 5926–6452 Chain I; UniProt 4254–4392 Chain J; UniProt 5926–6452 Fragment:UNP residues 4254-4392 Fragment:UNP residues 5926-6452 Mutation:E191A T20P14-R RNA × 2 ;RNA (5'-R(*A*UP*UP*CP*CP*CP*C)-3') ; × 2 ZN ZINC ION × 20 MG MAGNESIUM ION × 4 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.81 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.

3350 other PDB entries and 4324 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name R1AB_SARS2
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain A; PDBConstruct 1–139; UniProt 4254–4392 Author chain C; PDBConstruct 1–139; UniProt 4254–4392 Author chain G; PDBConstruct 1–139; UniProt 4254–4392 Author chain I; PDBConstruct 1–139; UniProt 4254–4392 Author chain B; PDBConstruct 1–527; UniProt 5926–6452 Author chain D; PDBConstruct 1–527; UniProt 5926–6452 Author chain H; PDBConstruct 1–527; UniProt 5926–6452 Author chain J; PDBConstruct 1–527; UniProt 5926–6452

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 9q1j

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9q1j
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9q1j
Deposition date deposition_date2025-08-14
Structure title titleCryo-EM structure of SARS-CoV-2 nsp10-nsp14 E191A mutant-T20P14-R complex
Keywords keywordsSARS-CoV-2, replication and transcription, mismatch, proofreading exoribonuclease, VIRAL PROTEIN, VIRAL PROTEIN-RNA complex; VIRAL PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier47.62
Radius of gyration Rg (electron density) rg_electron47.38
Forward intensity I(0) i01517750000.00
Molecular weight molecular_weight307450.0 kDa
Excluded volume excluded_volume376970 ų
Envelope volume envelope_volume541310 ų
Hydration-shell volume shell_volume92469 ų
Envelope diameter envelope_diameter162.1
Shell Rg shell_rg53.77
Envelope Rg envelope_rg46.69
Shape Rg shape_rg47.34
Total Rg total_rg47.76
Total atoms total_atoms21410
Residues n_residues2628
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 dmax150.2
Rg (real space) rg_real47.34
Rg uncertainty (real space) rg_real_error1.11
I(0) (real space) i0_real1.5180e+09
I(0) uncertainty (real space) i0_real_error2.7610e+07
Rg (reciprocal space) rg_reciprocal47.62
I(0) (reciprocal space) i0_reciprocal1518000000.0000
Solution quality estimate total_estimate0.8881
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary59.2
Skewness Skewness skewness0.139
Kurtosis Kurtosis kurtosis-0.453
Angular range angular_range— – 0.1650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha99610000.0000
Real-space data points n_real_points34
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: 0.969; Smooth: 0.823

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)