1m6o

Crystal Structure of HLA B*4402 in complex with HLA DPA*0201 peptide

Method: X-RAY DIFFRACTION Dmax: 75.2 Å Quality: EXCELLENT

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

HLA class I histocompatibility antigen, BW-44(B-12) B*4402 alpha chain

Homo sapiens

UniProt P30481

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 25–300 Not recorded Beta-2-microglobulin × 1 (P01884) HLA DPA*0201 peptide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.2;298 K;20-30% PEG 4K, 0.1M citrate, 0.2M ammonium acetate, pH 5.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 1.60 Å R-free 0.234

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.

19 other PDB entries and 22 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name 1B44_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–276; UniProt 25–300

Beta-2-microglobulin

Homo sapiens

UniProt P01884

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 × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain B; UniProt 21–119 Not recorded HLA class I histocompatibility antigen, BW-44(B-12) B*4402 alpha chain × 1 (P30481) HLA DPA*0201 peptide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.2;298 K;20-30% PEG 4K, 0.1M citrate, 0.2M ammonium acetate, pH 5.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 1.60 Å R-free 0.234

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.

27 other PDB entries and 35 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name B2MG_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–99; UniProt 21–119

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 1m6o

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1m6o
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1m6o
Deposition date deposition_date2002-07-17
Structure title titleCrystal Structure of HLA B*4402 in complex with HLA DPA*0201 peptide
Keywords keywordsMHC I, GLYCOPROTEIN, 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_guinier24.08
Radius of gyration Rg (electron density) rg_electron22.94
Forward intensity I(0) i036357300.00
Molecular weight molecular_weight44746.0 kDa
Excluded volume excluded_volume55187 ų
Envelope volume envelope_volume67270 ų
Hydration-shell volume shell_volume24589 ų
Envelope diameter envelope_diameter78.9
Shell Rg shell_rg29.76
Envelope Rg envelope_rg22.99
Shape Rg shape_rg22.92
Total Rg total_rg23.79
Total atoms total_atoms3162
Residues n_residues384
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 dmax75.2
Rg (real space) rg_real24.01
Rg uncertainty (real space) rg_real_error0.51
I(0) (real space) i0_real3.6360e+07
I(0) uncertainty (real space) i0_real_error4.8110e+05
Rg (reciprocal space) rg_reciprocal24.03
I(0) (reciprocal space) i0_reciprocal36360000.0000
Solution quality estimate total_estimate0.9115
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary29.4
Skewness Skewness skewness0.237
Kurtosis Kurtosis kurtosis-0.486
Angular range angular_range— – 0.3300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8990000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.950; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.998

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd1m6oa1
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_idd1m6oa2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.19 — MHC antigen-recognition domain
Superfamily Superfamily superfamilyd.19.1 — MHC antigen-recognition domain
Family Family familyd.19.1.1 — MHC antigen-recognition domain
Domain ID domain_idd1m6ob_
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 (3 domains)

Domain ID domain_id1m6oA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology500 — Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1
Homologous superfamily homologous superfamily10 — MHC class I-like antigen recognition-like
Domain ID domain_id1m6oA02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id1m6oB00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)