5vkk

Crystal structure of Fab fragment of anti-CD22 Epratuzumab

Method: X-RAY DIFFRACTION Dmax: 99.8 Å Quality: GOOD

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

Epratuzumab Fab Heavy Chain

Homo sapiens

UniProt Q6N089

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 H; UniProt 132–245 Not recorded Epratuzumab Fab Light Chain × 1 (Q8TCD0) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;293 K;85 mM Tris, pH 8.5, 25.5% PEG 4000 (w/v), 170 mM sodium acetate and 15% glycerol Resolution 2.01 Å R-free 0.237
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 132–245 Not recorded Epratuzumab Fab Light Chain × 1 (Q8TCD0) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;293 K;85 mM Tris, pH 8.5, 25.5% PEG 4000 (w/v), 170 mM sodium acetate and 15% glycerol Resolution 2.01 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.

17 other PDB entries and 28 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name Q6N089_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 106–219; UniProt 132–245 Author chain H; PDBConstruct 106–219; UniProt 132–245

Epratuzumab Fab Light Chain

Homo sapiens

UniProt Q8TCD0

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 L; UniProt 126–239 Not recorded Epratuzumab Fab Heavy Chain × 1 (Q6N089) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;293 K;85 mM Tris, pH 8.5, 25.5% PEG 4000 (w/v), 170 mM sodium acetate and 15% glycerol Resolution 2.01 Å R-free 0.237
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 126–239 Not recorded Epratuzumab Fab Heavy Chain × 1 (Q6N089) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;293 K;85 mM Tris, pH 8.5, 25.5% PEG 4000 (w/v), 170 mM sodium acetate and 15% glycerol Resolution 2.01 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.

39 other PDB entries and 65 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name Q8TCD0_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 106–219; UniProt 126–239 Author chain L; PDBConstruct 106–219; UniProt 126–239

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 5vkk

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5vkk
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5vkk
Deposition date deposition_date2017-04-21
Structure title titleCrystal structure of Fab fragment of anti-CD22 Epratuzumab
Keywords keywordstherapeutic antibody, B cell, 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_guinier32.03
Radius of gyration Rg (electron density) rg_electron31.12
Forward intensity I(0) i0147662000.00
Molecular weight molecular_weight94833.0 kDa
Excluded volume excluded_volume118030 ų
Envelope volume envelope_volume156120 ų
Hydration-shell volume shell_volume41932 ų
Envelope diameter envelope_diameter106.2
Shell Rg shell_rg38.42
Envelope Rg envelope_rg30.12
Shape Rg shape_rg31.11
Total Rg total_rg31.83
Total atoms total_atoms6681
Residues n_residues851
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 dmax99.8
Rg (real space) rg_real31.86
Rg uncertainty (real space) rg_real_error0.70
I(0) (real space) i0_real1.4770e+08
I(0) uncertainty (real space) i0_real_error2.1730e+06
Rg (reciprocal space) rg_reciprocal31.94
I(0) (reciprocal space) i0_reciprocal147700000.0000
Solution quality estimate total_estimate0.8908
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary42.8
Skewness Skewness skewness0.149
Kurtosis Kurtosis kurtosis-0.389
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha19660000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.916; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.991; Smooth: 0.837

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd5vkka_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd5vkkb1
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd5vkkb2
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.2 — C1 set domains (antibody constant domain-like)
Domain ID domain_idd5vkkh_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd5vkkl1
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd5vkkl2
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.2 — C1 set domains (antibody constant domain-like)

CATH v4.4 (6 domains)

Domain ID domain_id5vkkA02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5vkkB01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5vkkB02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5vkkH02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5vkkL01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id5vkkL02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)