9pyw

SARS-CoV-2 nsp7, nsp8 and nsp12 bound to a primer-template pair with incorporated ara-UMP

Method: ELECTRON MICROSCOPY Dmax: 148.3 Å Quality: GOOD

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

RNA-directed RNA polymerase nsp12

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 × 4 RNA 2 PDB declaration: hexameric(6) Consistent with all polymer counts Chain A; UniProt 4393–5324 Chain B; UniProt 3943–4140 Chain C; UniProt 3860–3942 Chain D; UniProt 3943–4140 Not recorded Primer RNA × 1 Template RNA × 1 ZN ZINC ION × 2 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.10 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, 3
Chains and sequence ranges Author chain A; PDBConstruct 3–934; UniProt 4393–5324 Author chain B; PDBConstruct 2–199; UniProt 3943–4140 Author chain D; PDBConstruct 2–199; UniProt 3943–4140 Author chain C; PDBConstruct 2–84; UniProt 3860–3942

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 9pyw

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9pyw
Deposition date deposition_date2025-08-08
最后修订 last_revision2025-09-17
Structure title titleSARS-CoV-2 nsp7, nsp8 and nsp12 bound to a primer-template pair with incorporated ara-UMP
Keywords keywordsRNA-dependent RNA polymerase (RdRp), Viral RNA synthesis, arabinose UTP, nsp7, nsp8, nsp12, VIRAL PROTEIN; VIRAL PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier42.53
Radius of gyration Rg (electron density) rg_electron41.92
Forward intensity I(0) i0529421000.00
Molecular weight molecular_weight173820.0 kDa
Excluded volume excluded_volume211420 ų
Envelope volume envelope_volume306090 ų
Hydration-shell volume shell_volume62729 ų
Envelope diameter envelope_diameter160.2
Shell Rg shell_rg45.03
Envelope Rg envelope_rg42.92
Shape Rg shape_rg41.90
Total Rg total_rg42.13
Total atoms total_atoms12115
Residues n_residues1426
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 dmax148.3
Rg (real space) rg_real42.70
Rg uncertainty (real space) rg_real_error1.49
I(0) (real space) i0_real5.2940e+08
I(0) uncertainty (real space) i0_real_error9.5890e+06
Rg (reciprocal space) rg_reciprocal42.53
I(0) (reciprocal space) i0_reciprocal529300000.0000
Solution quality estimate total_estimate0.8586
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary44.1
Skewness Skewness skewness0.492
Kurtosis Kurtosis kurtosis-0.125
Angular range angular_range— – 0.1850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha88520000.0000
Real-space data points n_real_points38
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.797; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.969; Smooth: 0.797

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

8. Citations (1)

9. Files and Curves (10)