9m48

Cryo-EM structure of 6:1 nsp15/dsRNA complex

Method: ELECTRON MICROSCOPY Dmax: 128.7 Å Quality: GOOD

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

Uridylate-specific endoribonuclease nsp15

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 × 6 RNA 2 PDB declaration: octameric(8) Consistent with all polymer counts Chain A; UniProt 6453–6798 Chain B; UniProt 6453–6798 Chain C; UniProt 6453–6798 Chain D; UniProt 6453–6798 Chain E; UniProt 6453–6798 Chain F; UniProt 6453–6798 Mutation:H6686A RNA (31-MER) × 1 RNA (31-MER) × 1 CO COBALT (II) ION × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.60 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.

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
Chains and sequence ranges Author chain A; PDBConstruct 1–346; UniProt 6453–6798 Author chain B; PDBConstruct 1–346; UniProt 6453–6798 Author chain C; PDBConstruct 1–346; UniProt 6453–6798 Author chain D; PDBConstruct 1–346; UniProt 6453–6798 Author chain E; PDBConstruct 1–346; UniProt 6453–6798 Author chain F; PDBConstruct 1–346; UniProt 6453–6798

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 9m48

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9m48
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9m48
Deposition date deposition_date2025-03-04
Structure title titleCryo-EM structure of 6:1 nsp15/dsRNA complex
Keywords keywordsSARS-CoV-2, nsp15, RNA binding protein, RNA BINDING PROTEIN/RNA, RNA BINDING PROTEIN-RNA complex; RNA BINDING PROTEIN/RNA
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier42.16
Radius of gyration Rg (electron density) rg_electron41.08
Forward intensity I(0) i0911552000.00
Molecular weight molecular_weight242050.0 kDa
Excluded volume excluded_volume299970 ų
Envelope volume envelope_volume423530 ų
Hydration-shell volume shell_volume82379 ų
Envelope diameter envelope_diameter134.8
Shell Rg shell_rg49.44
Envelope Rg envelope_rg40.24
Shape Rg shape_rg41.05
Total Rg total_rg41.59
Total atoms total_atoms16978
Residues n_residues2051
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 dmax128.7
Rg (real space) rg_real41.90
Rg uncertainty (real space) rg_real_error0.72
I(0) (real space) i0_real9.1160e+08
I(0) uncertainty (real space) i0_real_error1.3830e+07
Rg (reciprocal space) rg_reciprocal42.16
I(0) (reciprocal space) i0_reciprocal911800000.0000
Solution quality estimate total_estimate0.8926
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary52.2
Skewness Skewness skewness0.070
Kurtosis Kurtosis kurtosis-0.489
Angular range angular_range— – 0.1850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha79110000.0000
Real-space data points n_real_points38
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.919; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.955; Smooth: 0.889

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)