6w4b

The crystal structure of Nsp9 RNA binding protein of SARS CoV-2

Method: X-RAY DIFFRACTION Dmax: 69.8 Å Quality: GOOD

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

Non-structural protein 9

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 × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 4141–4253 Chain B; UniProt 4141–4253 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 4.6;289 K;1.8 M di-Ammonium hydrogen citrate, 0.1 M Sodium acetate Resolution 2.95 Å R-free 0.276

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 5–117; UniProt 4141–4253 Author chain B; PDBConstruct 5–117; UniProt 4141–4253

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 6w4b

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6w4b
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6w4b
Deposition date deposition_date2020-03-10
Structure title titleThe crystal structure of Nsp9 RNA binding protein of SARS CoV-2
Keywords keywordsreplicase, Structural Genomics, Center for Structural Genomics of Infectious Diseases, CSGID, REPLICATION, VIRAL PROTEIN; REPLICATION, VIRAL PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.82
Radius of gyration Rg (electron density) rg_electron19.80
Forward intensity I(0) i010414900.00
Molecular weight molecular_weight24004.0 kDa
Excluded volume excluded_volume30146 ų
Envelope volume envelope_volume37701 ų
Hydration-shell volume shell_volume16861 ų
Envelope diameter envelope_diameter70.5
Shell Rg shell_rg24.94
Envelope Rg envelope_rg19.89
Shape Rg shape_rg19.79
Total Rg total_rg20.63
Total atoms total_atoms1685
Residues n_residues225
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 dmax69.8
Rg (real space) rg_real20.85
Rg uncertainty (real space) rg_real_error0.48
I(0) (real space) i0_real1.0410e+07
I(0) uncertainty (real space) i0_real_error1.2940e+05
Rg (reciprocal space) rg_reciprocal20.84
I(0) (reciprocal space) i0_reciprocal10410000.0000
Solution quality estimate total_estimate0.8806
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.2
Skewness Skewness skewness0.383
Kurtosis Kurtosis kurtosis-0.340
Angular range angular_range— – 0.3800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1720000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.834; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.966; Smooth: 0.974

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd6w4ba_
Class classb — All beta proteins
Fold Fold foldb.140 — Replicase NSP9
Superfamily Superfamily superfamilyb.140.1 — Replicase NSP9
Family Family familyb.140.1.1 — Replicase NSP9
Domain ID domain_idd6w4bb1
Class classb — All beta proteins
Fold Fold foldb.140 — Replicase NSP9
Superfamily Superfamily superfamilyb.140.1 — Replicase NSP9
Family Family familyb.140.1.1 — Replicase NSP9
Domain ID domain_idd6w4bb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id6w4bA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily250 — Replicase NSP9
Domain ID domain_id6w4bB01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology10 — Thrombin, subunit H
Homologous superfamily homologous superfamily250 — Replicase NSP9

8. Citations (1)

9. Files and Curves (10)