9i81

SARS-CoV-2 RdRp bound to a stack of three HeE1-2Tyr molecules

Method: ELECTRON MICROSCOPY Dmax: 105.2 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 homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 4393–5324 Chain B; UniProt 3943–4140 Chain C; UniProt 3860–3940 Chain D; UniProt 3943–4140 Not recorded 6CJ N-[8-(cyclohexyloxy)-1-oxo-2-phenyl-1H-pyrido[2,1-b][1,3]benzothiazole-4-carbonyl]-L-tyrosine × 3 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.98 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 1–932; UniProt 4393–5324 Author chain B; PDBConstruct 20–217; UniProt 3943–4140 Author chain D; PDBConstruct 20–217; UniProt 3943–4140 Author chain C; PDBConstruct 4–84; UniProt 3860–3940

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 9i81

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9i81
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9i81
Deposition date deposition_date2025-02-04
Structure title titleSARS-CoV-2 RdRp bound to a stack of three HeE1-2Tyr molecules
Keywords keywordsSARS-CoV-2 RdRp Small molecule inhibitor, VIRAL PROTEIN; VIRAL PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier32.92
Radius of gyration Rg (electron density) rg_electron32.00
Forward intensity I(0) i0234359000.00
Molecular weight molecular_weight124360.0 kDa
Excluded volume excluded_volume156130 ų
Envelope volume envelope_volume195310 ų
Hydration-shell volume shell_volume49437 ų
Envelope diameter envelope_diameter115.0
Shell Rg shell_rg40.03
Envelope Rg envelope_rg32.04
Shape Rg shape_rg32.02
Total Rg total_rg32.60
Total atoms total_atoms17163
Residues n_residues1086
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 dmax105.2
Rg (real space) rg_real32.75
Rg uncertainty (real space) rg_real_error0.67
I(0) (real space) i0_real2.3440e+08
I(0) uncertainty (real space) i0_real_error3.7210e+06
Rg (reciprocal space) rg_reciprocal32.83
I(0) (reciprocal space) i0_reciprocal234400000.0000
Solution quality estimate total_estimate0.8944
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary41.6
Skewness Skewness skewness0.214
Kurtosis Kurtosis kurtosis-0.395
Angular range angular_range— – 0.2400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha52120000.0000
Real-space data points n_real_points49
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.900; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.996; Smooth: 0.928

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)