9b7b

Crystal structure of humanized 44H10 Fab Version 22 in complex with HLA-DR (HLA-DRA*01:01/HLA-DRB1*04:01)

Method: X-RAY DIFFRACTION Dmax: 122.5 Å Quality: EXCELLENT

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

HLA class II histocompatibility antigen, DR alpha chain

Homo sapiens

UniProt P01903

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 26–206 Not recorded Hemagglutinin HA1 chain, HLA class II histocompatibility antigen DR beta chain × 1 h44H10-V22 Antibody, heavy chain × 1 h44H10-V22 Antibody, light chain × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;20% (w/v) PEG 6000, 0.1 M citric acid, pH 4.0 Resolution 3.08 Å R-free 0.237
2 Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain E; UniProt 26–206 Not recorded Hemagglutinin HA1 chain, HLA class II histocompatibility antigen DR beta chain × 1 h44H10-V22 Antibody, heavy chain × 1 h44H10-V22 Antibody, light chain × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293.15 K;20% (w/v) PEG 6000, 0.1 M citric acid, pH 4.0 Resolution 3.08 Å R-free 0.237

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.

139 other PDB entries and 218 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DRA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–181; UniProt 26–206 Author chain E; PDBConstruct 1–181; UniProt 26–206

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 9b7b

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9b7b
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9b7b
Deposition date deposition_date2024-03-27
Structure title titleCrystal structure of humanized 44H10 Fab Version 22 in complex with HLA-DR (HLA-DRA*01:01/HLA-DRB1*04:01)
Keywords keywordsAntibody, Humanized, MHC class II, IMMUNE SYSTEM; IMMUNE SYSTEM
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier40.84
Radius of gyration Rg (electron density) rg_electron40.14
Forward intensity I(0) i0498300000.00
Molecular weight molecular_weight182520.0 kDa
Excluded volume excluded_volume228260 ų
Envelope volume envelope_volume324560 ų
Hydration-shell volume shell_volume66160 ų
Envelope diameter envelope_diameter122.7
Shell Rg shell_rg47.85
Envelope Rg envelope_rg37.98
Shape Rg shape_rg40.13
Total Rg total_rg40.62
Total atoms total_atoms12878
Residues n_residues1614
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 dmax122.5
Rg (real space) rg_real40.58
Rg uncertainty (real space) rg_real_error0.70
I(0) (real space) i0_real4.9830e+08
I(0) uncertainty (real space) i0_real_error8.0590e+06
Rg (reciprocal space) rg_reciprocal40.84
I(0) (reciprocal space) i0_reciprocal498400000.0000
Solution quality estimate total_estimate0.9066
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary59.7
Skewness Skewness skewness-0.065
Kurtosis Kurtosis kurtosis-0.704
Angular range angular_range— – 0.1950 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha49700000.0000
Real-space data points n_real_points40
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.943; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.985; Smooth: 0.968

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)