9q6n

Human Serum Albumin in complex with four nanobodies: nb118, nb68, N30 & N23

Method: ELECTRON MICROSCOPY Dmax: 100.7 Å Quality: EXCELLENT

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

Albumin

Homo sapiens

UniProt P02768

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 × 5 PDB declaration: pentameric(5) Consistent with protein copy count Chain A; UniProt 25–608 Not recorded nb118 × 1 nb68 × 1 N30 × 1 N23 × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.80 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.

187 other PDB entries and 271 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ALBU_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–584; UniProt 25–608

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 9q6n

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9q6n
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9q6n
Deposition date deposition_date2025-08-22
Structure title titleHuman Serum Albumin in complex with four nanobodies: nb118, nb68, N30 & N23
Keywords keywordsNanobody, VHH, IMMUNE SYSTEM; IMMUNE SYSTEM
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier33.29
Radius of gyration Rg (electron density) rg_electron32.36
Forward intensity I(0) i0235394000.00
Molecular weight molecular_weight119730.0 kDa
Excluded volume excluded_volume148390 ų
Envelope volume envelope_volume185380 ų
Hydration-shell volume shell_volume46970 ų
Envelope diameter envelope_diameter107.5
Shell Rg shell_rg39.94
Envelope Rg envelope_rg32.20
Shape Rg shape_rg32.34
Total Rg total_rg32.98
Total atoms total_atoms8399
Residues n_residues1077
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 dmax100.7
Rg (real space) rg_real33.11
Rg uncertainty (real space) rg_real_error0.59
I(0) (real space) i0_real2.3540e+08
I(0) uncertainty (real space) i0_real_error3.3570e+06
Rg (reciprocal space) rg_reciprocal33.22
I(0) (reciprocal space) i0_reciprocal235400000.0000
Solution quality estimate total_estimate0.9067
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary44.0
Skewness Skewness skewness0.063
Kurtosis Kurtosis kurtosis-0.566
Angular range angular_range— – 0.2400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha24910000.0000
Real-space data points n_real_points49
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.957; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.987; Smooth: 0.926

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)