9btx

Structure of human MAIT A-F7 TCR in complex with human MR1-3,4-dihydroxybenzaldehyde

Method: X-RAY DIFFRACTION Dmax: 174.9 Å Quality: GOOD

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

Major histocompatibility complex class I-related gene protein

Homo sapiens

UniProt Q95460

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 23–292 Not recorded Beta-2-microglobulin × 1 (P61769) Human TCR TRAV1-2_ALPHA × 1 Human TCR TRBV6-1_BETA × 1 GOL GLYCEROL × 4 H6N Protocatechuic aldehyde × 1 ACT ACETATE ION × 4 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;295 K;PEG3350, Na-acetate, BTP Resolution 2.05 Å R-free 0.218
2 Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain C; UniProt 23–292 Not recorded Beta-2-microglobulin × 1 (P61769) Human TCR TRAV1-2_ALPHA × 1 Human TCR TRBV6-1_BETA × 1 GOL GLYCEROL × 2 H6N Protocatechuic aldehyde × 1 ACT ACETATE ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;295 K;PEG3350, Na-acetate, BTP Resolution 2.05 Å R-free 0.218

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.

82 other PDB entries and 143 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name HMR1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–271; UniProt 23–292 Author chain C; PDBConstruct 2–271; UniProt 23–292

Beta-2-microglobulin

Homo sapiens

UniProt P61769

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 B; UniProt 21–119 Fragment:UNP residues 21-119 Major histocompatibility complex class I-related gene protein × 1 (Q95460) Human TCR TRAV1-2_ALPHA × 1 Human TCR TRBV6-1_BETA × 1 GOL GLYCEROL × 4 H6N Protocatechuic aldehyde × 1 ACT ACETATE ION × 4 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;295 K;PEG3350, Na-acetate, BTP Resolution 2.05 Å R-free 0.218
2 Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain F; UniProt 21–119 Fragment:UNP residues 21-119 Major histocompatibility complex class I-related gene protein × 1 (Q95460) Human TCR TRAV1-2_ALPHA × 1 Human TCR TRBV6-1_BETA × 1 GOL GLYCEROL × 2 H6N Protocatechuic aldehyde × 1 ACT ACETATE ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;295 K;PEG3350, Na-acetate, BTP Resolution 2.05 Å R-free 0.218

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.

1313 other PDB entries and 1997 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 2–100; UniProt 21–119 Author chain F; PDBConstruct 2–100; 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 9btx

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id9btx
Deposition date deposition_date2024-05-15
Structure title titleStructure of human MAIT A-F7 TCR in complex with human MR1-3,4-dihydroxybenzaldehyde
Keywords keywordsantigen presentation, MAIT cells, T cell receptor, MR1, 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_guinier49.38
Radius of gyration Rg (electron density) rg_electron49.64
Forward intensity I(0) i0474670000.00
Molecular weight molecular_weight179330.0 kDa
Excluded volume excluded_volume223270 ų
Envelope volume envelope_volume319790 ų
Hydration-shell volume shell_volume55313 ų
Envelope diameter envelope_diameter177.6
Shell Rg shell_rg50.79
Envelope Rg envelope_rg49.69
Shape Rg shape_rg49.64
Total Rg total_rg49.66
Total atoms total_atoms12663
Residues n_residues1601
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 dmax174.9
Rg (real space) rg_real49.74
Rg uncertainty (real space) rg_real_error2.07
I(0) (real space) i0_real4.7470e+08
I(0) uncertainty (real space) i0_real_error1.0260e+07
Rg (reciprocal space) rg_reciprocal49.38
I(0) (reciprocal space) i0_reciprocal474400000.0000
Solution quality estimate total_estimate0.8351
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary38.2
Skewness Skewness skewness0.348
Kurtosis Kurtosis kurtosis-0.646
Angular range angular_range— – 0.1600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha36820000.0000
Real-space data points n_real_points33
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.744; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.744; Smooth: 0.875

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (9)

8. Citations (1)

9. Files and Curves (10)