4lcw

The structure of human MAIT TCR in complex with MR1-K43A-RL-6-Me-7OH

Method: X-RAY DIFFRACTION Dmax: 168.8 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 Fragment:extracellular domain, residues 23-292 Mutation:C261S, K43A Beta-2-microglobulin × 1 (P61769) MAIT T cell receptor alpha chain × 1 MAIT T cell receptor beta chain × 1 GOL GLYCEROL × 1 1VY 1-deoxy-1-(7-hydroxy-6-methyl-2,4-dioxo-3,4-dihydropteridin-8(2H)-yl)-D-ribitol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;0.2M sodium acetate, 0.1M Bis-Tris-Propane pH 6.5 and 20% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 2.40 Å R-free 0.227
2 Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain C; UniProt 23–292 Fragment:extracellular domain, residues 23-292 Mutation:C261S, K43A Beta-2-microglobulin × 1 (P61769) MAIT T cell receptor alpha chain × 1 MAIT T cell receptor beta chain × 1 1VY 1-deoxy-1-(7-hydroxy-6-methyl-2,4-dioxo-3,4-dihydropteridin-8(2H)-yl)-D-ribitol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;0.2M sodium acetate, 0.1M Bis-Tris-Propane pH 6.5 and 20% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 2.40 Å R-free 0.227

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 Not recorded Major histocompatibility complex class I-related gene protein × 1 (Q95460) MAIT T cell receptor alpha chain × 1 MAIT T cell receptor beta chain × 1 GOL GLYCEROL × 1 1VY 1-deoxy-1-(7-hydroxy-6-methyl-2,4-dioxo-3,4-dihydropteridin-8(2H)-yl)-D-ribitol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;0.2M sodium acetate, 0.1M Bis-Tris-Propane pH 6.5 and 20% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 2.40 Å R-free 0.227
2 Protein heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain F; UniProt 21–119 Not recorded Major histocompatibility complex class I-related gene protein × 1 (Q95460) MAIT T cell receptor alpha chain × 1 MAIT T cell receptor beta chain × 1 1VY 1-deoxy-1-(7-hydroxy-6-methyl-2,4-dioxo-3,4-dihydropteridin-8(2H)-yl)-D-ribitol × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;0.2M sodium acetate, 0.1M Bis-Tris-Propane pH 6.5 and 20% PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 2.40 Å R-free 0.227

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 1–99; UniProt 21–119 Author chain F; 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 4lcw

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4lcw
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4lcw
Deposition date deposition_date2013-06-24
Structure title titleThe structure of human MAIT TCR in complex with MR1-K43A-RL-6-Me-7OH
Keywords keywordsMHC Class I-related protein, MAIT T cell receptor, Vitamin B2 metabolites, Membrane Protein-Immune System complex; Membrane Protein/Immune System
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier49.25
Radius of gyration Rg (electron density) rg_electron49.55
Forward intensity I(0) i0464573000.00
Molecular weight molecular_weight176260.0 kDa
Excluded volume excluded_volume219280 ų
Envelope volume envelope_volume323130 ų
Hydration-shell volume shell_volume57175 ų
Envelope diameter envelope_diameter167.2
Shell Rg shell_rg49.50
Envelope Rg envelope_rg48.85
Shape Rg shape_rg49.54
Total Rg total_rg49.58
Total atoms total_atoms12449
Residues n_residues1583
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 dmax168.8
Rg (real space) rg_real49.54
Rg uncertainty (real space) rg_real_error1.78
I(0) (real space) i0_real4.6460e+08
I(0) uncertainty (real space) i0_real_error8.6210e+06
Rg (reciprocal space) rg_reciprocal49.26
I(0) (reciprocal space) i0_reciprocal464400000.0000
Solution quality estimate total_estimate0.8661
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary58.0
Skewness Skewness skewness0.324
Kurtosis Kurtosis kurtosis-0.640
Angular range angular_range— – 0.1600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha29580000.0000
Real-space data points n_real_points33
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.864; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.852; Smooth: 0.812

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 30 domains

SCOP 2.08 (16 domains)

Domain ID domain_idd4lcwa1
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.19.1.0 — automated matches
Domain ID domain_idd4lcwa2
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_idd4lcwa3
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd4lcwb_
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_idd4lcwc1
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.19.1.0 — automated matches
Domain ID domain_idd4lcwc2
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_idd4lcwc3
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd4lcwd1
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_idd4lcwd2
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_idd4lcwe1
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_idd4lcwe2
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_idd4lcwf_
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_idd4lcwg1
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_idd4lcwg2
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_idd4lcwh1
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_idd4lcwh2
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

CATH v4.4 (14 domains)

Domain ID domain_id4lcwA01
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_id4lcwA02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwB00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwC01
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_id4lcwC02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwD01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwD02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwE01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwE02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwF00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwG01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwG02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwH01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id4lcwH02
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)