9lds

Crystal structure of nanobody H145 bound to SARS-CoV-2 spike stem-helix

Method: X-RAY DIFFRACTION Dmax: 69.4 Å Quality: GOOD

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

;Spike protein S2' ;

Severe acute respiratory syndrome coronavirus 2

UniProt P0DTC2

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 1139–1153 Not recorded H145 × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;291 K;0.1 M HEPES pH 7.5, 70% v/v (+/-)-2-Methyl-2,4-pentanediol Resolution 1.60 Å R-free 0.202
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 1139–1153 Not recorded H145 × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;291 K;0.1 M HEPES pH 7.5, 70% v/v (+/-)-2-Methyl-2,4-pentanediol Resolution 1.60 Å R-free 0.202

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.

2152 other PDB entries and 2472 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SPIKE_SARS2
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–15; UniProt 1139–1153 Author chain D; PDBConstruct 1–15; UniProt 1139–1153

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 9lds

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9lds
Deposition date deposition_date2025-01-06
Structure title titleCrystal structure of nanobody H145 bound to SARS-CoV-2 spike stem-helix
Keywords keywordsSARS-CoV-2; spike; stem-helix; nanobody, ANTIVIRAL PROTEIN; ANTIVIRAL PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.02
Radius of gyration Rg (electron density) rg_electron20.14
Forward intensity I(0) i015032800.00
Molecular weight molecular_weight27883.0 kDa
Excluded volume excluded_volume34314 ų
Envelope volume envelope_volume40508 ų
Hydration-shell volume shell_volume17390 ų
Envelope diameter envelope_diameter70.2
Shell Rg shell_rg25.89
Envelope Rg envelope_rg20.38
Shape Rg shape_rg20.15
Total Rg total_rg20.89
Total atoms total_atoms1962
Residues n_residues258
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 dmax69.4
Rg (real space) rg_real21.08
Rg uncertainty (real space) rg_real_error0.46
I(0) (real space) i0_real1.5030e+07
I(0) uncertainty (real space) i0_real_error2.0030e+05
Rg (reciprocal space) rg_reciprocal21.07
I(0) (reciprocal space) i0_reciprocal15030000.0000
Solution quality estimate total_estimate0.8805
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.1
Skewness Skewness skewness0.381
Kurtosis Kurtosis kurtosis-0.515
Angular range angular_range— – 0.3800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5739000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.845; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.918; Smooth: 0.991

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)