SAXSdb — 4iiq

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

Beta-2-microglobulin, MHC class I-related protein

Bos taurus

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Insufficient information Heteromer Protein × 3 PDB declaration: trimeric（3） Consistent with protein copy count	Chain C； UniProt 19–295	Fragment：UNP C1ITJ8 residues 19-295, UNP P01888 residues 21-118 Non-standard monomer：Yes (specific site not provided by mmCIF)	Human Mucosal Associated Invariant T cell receptor alpha chain × 1 Human Mucosal Associated Invariant T cell receptor beta chain × 1 SO4 SULFATE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.5 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K	Resolution 2.86 Å R-free 0.271

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.

Other PDB	Difference from Current Entry 4IIQ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
4L8S Crystal structure of a human Valpha7.2/Vbeta13.3 MAIT TCR in complex with bovine MR1 Deposited 2013-06-17	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 19–295（277 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	SO4 SULFATE ION × 5	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.7 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 2.90 Å R-free 0.278
4L9L Crystal structure of a human Valpha7.2/Vbeta13.2 MAIT TCR in complex with bovine MR1 Deposited 2013-06-18	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 19–295（277 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	SO4 SULFATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.6 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 3.40 Å R-free 0.312
4L9L Crystal structure of a human Valpha7.2/Vbeta13.2 MAIT TCR in complex with bovine MR1 Deposited 2013-06-18	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 19–295（277 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	SO4 SULFATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.6 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 3.40 Å R-free 0.312
4LCC Crystal structure of a human MAIT TCR in complex with a bacterial antigen bound to humanized bovine MR1 Deposited 2013-06-21	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 19–295（277 aa） Fragment：P01888 residues 21-118, C1ITJ8 residues 19-295	Mutation：A185M, R260Q, Q264L	1XL 1-deoxy-1-[6-(hydroxymethyl)-2,4-dioxo-3,4-dihydropteridin-8(2H)-yl]-D-arabinitol × 1 SO4 SULFATE ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.5 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 3.26 Å R-free 0.312
7RNO Model of the Ac-6-FP/hpMR1/bB2m/TAPBPR complex from integrated docking, NMR and restrained MD Deposited 2021-07-29	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 198–288（91 aa）	Not recorded	30W N-(6-formyl-4-oxo-3,4-dihydropteridin-2-yl)acetamide × 1	SOLUTION NMR NMR measurement conditions pH 7.2；298.15 K；Ionic strength (raw mmCIF value) 50；Pressure 1.01325 NMR sample composition 100 uM hpMR1 (human platform MR1), 100 uM [U-100% 12C; U-100% 15N; Ala CB, Ile CD1, Leu CD1/CD2, Val CG1/CG2] bovine beta 2 microglobulin, 300 uM TAPBPR, 90% H2O/10% D2O \| 90% H2O/10% D2O	Resolution not provided

4 other PDB entries and 5 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	C1ITJ8_BOVIN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 114–390； UniProt 19–295

Beta-2-microglobulin, MHC class I-related protein

Bos taurus

UniProt P01888

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Insufficient information Heteromer Protein × 3 PDB declaration: trimeric（3） Consistent with protein copy count	Chain C； UniProt 21–118	Fragment：UNP C1ITJ8 residues 19-295, UNP P01888 residues 21-118 Non-standard monomer：Yes (specific site not provided by mmCIF)	Human Mucosal Associated Invariant T cell receptor alpha chain × 1 Human Mucosal Associated Invariant T cell receptor beta chain × 1 SO4 SULFATE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.5 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291K	Resolution 2.86 Å R-free 0.271

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.

Other PDB	Difference from Current Entry 4IIQ	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1BMG CRYSTAL STRUCTURE OF BOVINE BETA2-MICROGLOBULIN Deposited 1995-07-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 21–118（98 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.50 Å R-free 0.290
2XFX cattle MHC class I N01301 presenting an 11mer from Theileria parva Deposited 2010-05-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain B 20–118（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 7；20% PEG 8000, 50MM POTASSIUM PHOSPHATE, PH 7.0	Resolution 1.90 Å R-free 0.238
3L9R Crystal structure of bovine CD1b3 with endogenously bound ligands Deposited 2010-01-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 21–118（98 aa） Fragment：UNP residues 21-118	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 L9R (2S)-3-(octadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 1 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；100 mM Na cacodylate pH 6.5, 2 M ammonium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 2.30 Å R-free 0.248
3L9R Crystal structure of bovine CD1b3 with endogenously bound ligands Deposited 2010-01-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 21–118（98 aa） Fragment：UNP residues 21-118	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 GOL GLYCEROL × 3 L9Q (1S)-2-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-1-[(octadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate × 1 CL CHLORIDE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；100 mM Na cacodylate pH 6.5, 2 M ammonium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 2.30 Å R-free 0.248
3L9R Crystal structure of bovine CD1b3 with endogenously bound ligands Deposited 2010-01-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain F 21–118（98 aa） Fragment：UNP residues 21-118	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 L9R (2S)-3-(octadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 1 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；100 mM Na cacodylate pH 6.5, 2 M ammonium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 2.30 Å R-free 0.248
3L9R Crystal structure of bovine CD1b3 with endogenously bound ligands Deposited 2010-01-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 4 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain H 21–118（98 aa） Fragment：UNP residues 21-118	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 GOL GLYCEROL × 4 L9Q (1S)-2-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-1-[(octadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate × 1 CL CHLORIDE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；100 mM Na cacodylate pH 6.5, 2 M ammonium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 2.30 Å R-free 0.248
3PWV An immmunodominant CTL epitope from rinderpest virus presented by cattle MHC class I molecule N*01801 (BoLA-A11) Deposited 2010-12-09	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain B 21–118（98 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；291 K；pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.70 Å R-free 0.232
3PWV An immmunodominant CTL epitope from rinderpest virus presented by cattle MHC class I molecule N*01801 (BoLA-A11) Deposited 2010-12-09	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain E 21–118（98 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；291 K；pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.70 Å R-free 0.232
4F7C Crystal structure of bovine CD1d with bound C12-di-sulfatide Deposited 2012-05-15	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 21–118（98 aa） Fragment：UNP residues 21-118	Not recorded	0SG N-{(2S,3R,4E)-1-[(3,6-di-O-sulfo-beta-D-galactopyranosyl)oxy]-3-hydroxyoctadec-4-en-2-yl}dodecanamide × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；295 K；20% PEG3350, 200 mM sodium formate, VAPOR DIFFUSION, SITTING DROP, temperature 295K	Resolution 2.86 Å R-free 0.291
4F7C Crystal structure of bovine CD1d with bound C12-di-sulfatide Deposited 2012-05-15	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 21–118（98 aa） Fragment：UNP residues 21-118	Not recorded	0SG N-{(2S,3R,4E)-1-[(3,6-di-O-sulfo-beta-D-galactopyranosyl)oxy]-3-hydroxyoctadec-4-en-2-yl}dodecanamide × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；295 K；20% PEG3350, 200 mM sodium formate, VAPOR DIFFUSION, SITTING DROP, temperature 295K	Resolution 2.86 Å R-free 0.291
4F7E Crystal structure of bovine CD1d with bound C16:0-alpha-galactosyl ceramide Deposited 2012-05-15	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 21–118（98 aa） Fragment：UNP residues 21-118	Not recorded	0SH N-[(2S,3S,4R)-1-(alpha-D-galactopyranosyloxy)-3,4-dihydroxyoctadecan-2-yl]hexadecanamide × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SO4 SULFATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；295 K；20% PEG4000, 200 mM potassium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 295K	Resolution 2.40 Å R-free 0.276
4L8S Crystal structure of a human Valpha7.2/Vbeta13.3 MAIT TCR in complex with bovine MR1 Deposited 2013-06-17	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 21–118（98 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	SO4 SULFATE ION × 5	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.7 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 2.90 Å R-free 0.278
4L9L Crystal structure of a human Valpha7.2/Vbeta13.2 MAIT TCR in complex with bovine MR1 Deposited 2013-06-18	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 21–118（98 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	SO4 SULFATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.6 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 3.40 Å R-free 0.312
4L9L Crystal structure of a human Valpha7.2/Vbeta13.2 MAIT TCR in complex with bovine MR1 Deposited 2013-06-18	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 21–118（98 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	SO4 SULFATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.6 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 3.40 Å R-free 0.312
4LCC Crystal structure of a human MAIT TCR in complex with a bacterial antigen bound to humanized bovine MR1 Deposited 2013-06-21	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 21–118（98 aa） Fragment：P01888 residues 21-118, C1ITJ8 residues 19-295	Mutation：A185M, R260Q, Q264L	1XL 1-deoxy-1-[6-(hydroxymethyl)-2,4-dioxo-3,4-dihydropteridin-8(2H)-yl]-D-arabinitol × 1 SO4 SULFATE ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M Hepes, 1.5 M Ammonium Sulfate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 3.26 Å R-free 0.312
7RNO Model of the Ac-6-FP/hpMR1/bB2m/TAPBPR complex from integrated docking, NMR and restrained MD Deposited 2021-07-29	Different construct Different mutation/modification Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric	Chain B 21–118（98 aa）	Not recorded	30W N-(6-formyl-4-oxo-3,4-dihydropteridin-2-yl)acetamide × 1	SOLUTION NMR NMR measurement conditions pH 7.2；298.15 K；Ionic strength (raw mmCIF value) 50；Pressure 1.01325 NMR sample composition 100 uM hpMR1 (human platform MR1), 100 uM [U-100% 12C; U-100% 15N; Ala CB, Ile CD1, Leu CD1/CD2, Val CG1/CG2] bovine beta 2 microglobulin, 300 uM TAPBPR, 90% H2O/10% D2O \| 90% H2O/10% D2O	Resolution not provided

10 other PDB entries and 16 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	B2MG_BOVIN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–98； UniProt 21–118

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	4iiq
Deposition date deposition_date	2012-12-20
Structure title title	Crystal structure of a human MAIT TCR in complex with bovine MR1
Keywords keywords	MHC-class I, Immunoglobulin domain, Immune system, Antigen presentation, Antigen recognition, Cell Membrane; IMMUNE SYSTEM
Experimental Method method	X-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier	36.76 Å
Radius of gyration Rg (electron density) rg_electron	36.95 Å
Forward intensity I(0) i0	129099000.00
Molecular weight molecular_weight	89240.0 kDa
Excluded volume excluded_volume	110470 Å³
Envelope volume envelope_volume	149400 Å³
Hydration-shell volume shell_volume	36946 Å³
Envelope diameter envelope_diameter	137.9 Å
Shell Rg shell_rg	38.75 Å
Envelope Rg envelope_rg	37.49 Å
Shape Rg shape_rg	36.95 Å
Total Rg total_rg	37.08 Å
Total atoms total_atoms	6300
Residues n_residues	799
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	129.5 Å
Rg (real space) rg_real	37.33 Å
Rg uncertainty (real space) rg_real_error	1.36 Å
I(0) (real space) i0_real	1.2910e+08
I(0) uncertainty (real space) i0_real_error	2.2790e+06
Rg (reciprocal space) rg_reciprocal	36.98 Å
I(0) (reciprocal space) i0_reciprocal	129100000.0000
Solution quality estimate total_estimate	0.7664
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	33.1 Å
Skewness Skewness skewness	0.668
Kurtosis Kurtosis kurtosis	-0.142
Angular range angular_range	— – 0.2150 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	16910000.0000
Real-space data points n_real_points	44
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.623; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.511; Smooth: 0.579

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	Human Mucosal Associated Invariant T cell receptor alpha chain
Molecular weight formula_weight	22851.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	6307

MAGQNIDQPTEMTATEGAIVQINCTYQTSGFNGLFWYQQHAGEAPTFLSYNVLDGLEEKGRFSSFLSRSKGYSYLLLKELQMKDSASYLCAVKDSNYQLIWGAGTKLIIKPNIQNPDPAVYQLRDSKSSDKSVCLFTDFDSQTNVSQSKDSDVYITDKCVLDMRSMDFKSNSAVAWSNKSDFACANAFNNSIIPEDTFFPSPESS

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Human Mucosal Associated Invariant T cell receptor beta chain
Molecular weight formula_weight	28291.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MANAGVTQTPKFQVLKTGQSMTLQCAQDMNHNSMYWYRQDPGMGLRLIYYSASEGTTDKGEVPNGYNVSRLNKREFSLRLESAAPSQTSVYFCASSVWTGEGSGELFFGEGSRLTVLEDLKNVFPPEVAVFEPSEAEISHTQKATLVCLATGFYPDHVELSWWVNGKEVHSGVCTDPQPLKEQPALNDSRYALSSRLRVSATFWQNPRNHFRCQVQFYGLSENDEWTQDRAKPVTQIVSAEAWGRADSAAALE

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	Beta-2-microglobulin, MHC class I-related protein
Molecular weight formula_weight	45423.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

IQRPPKIQVYSRHPPEDGKPNYLNCYVYGFHPPQIEIDLLKNGEKIKSEQSDLSFSKDWSFYLLSHAEFTPNSKDQYSCRVKHVTLEQPRIVKWDRDLGGGGSGGSGSGGGGSRTHSLRYFRLGISEPGYGIPEFISAGYVDSHPITMYNSVSQLXEPRALWMEENLAPDHWERYTQLLRGWQQAFKVELKQLQHHYNHSGFHTYQRMIGCELLEDGSITGFLQYAYDGQDFLIFNKDTLSWMAMDNVADIIRRVWEANRHELQYQKNWLEEECIAWLKRFLEYGKDALQRTEPPKVRVNHKETFPGITTLYCRAYGFYPPEISINWMKNGEEIFQDTDYGGILPSGDGTYQTWVSVELDPQNGDIYSCHVEHGGVHMVLQGFQESETILGG

来源 Source

来源生物 organism	Bos taurus
通用名 common_name	bovine,cow,domestic cattle,domestic cow
NCBI Class编号 ncbi_taxonomy_id	9913
宿主生物 host_organism	Trichoplusia ni

Entity 4 Entity 4 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	7

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7. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (7 domains)

Domain ID domain_id	d4iiqa1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.0 — automated matches

Domain ID domain_id	d4iiqa2
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.2 — C1 set domains (antibody constant domain-like)

Domain ID domain_id	d4iiqb1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.0 — automated matches

Domain ID domain_id	d4iiqb2
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.2 — C1 set domains (antibody constant domain-like)

Domain ID domain_id	d4iiqc1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.0 — automated matches

Domain ID domain_id	d4iiqc2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.19 — MHC antigen-recognition domain
Superfamily Superfamily superfamily	d.19.1 — MHC antigen-recognition domain
Family Family family	d.19.1.0 — automated matches

Domain ID domain_id	d4iiqc3
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.0 — automated matches

CATH v4.4 (7 domains)

Domain ID domain_id	4iiqA01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	4iiqA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	4iiqB01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	4iiqB02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	4iiqC01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	4iiqC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	500 — Murine Class I Major Histocompatibility Complex, H2-DB; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — MHC class I-like antigen recognition-like

Domain ID domain_id	4iiqC03
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

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8. Citations (1)

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Unit-cell length a length_a	82.045 Å
Unit-cell length b length_b	87.410 Å
Unit-cell length c length_c	156.372 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.860 Å
Low-resolution limit resolution_low	44.769 Å
R factor r_factor	0.2162
R_work r_work	0.2134
R_free r_free	0.2705

fit	/app/data/saxs_computation/ii/4iiq/4iiq.fit
pddf	/app/data/pr_computation/ii/4iiq/4iiq.pr.out
profile	/app/data/saxs_computation/ii/4iiq/4iiq.dat

Crystal structure of a human MAIT TCR in complex with bovine MR1

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

Beta-2-microglobulin, MHC class I-related protein

State in the Current Structure

Other States of the Same Protein in the Database

Beta-2-microglobulin, MHC class I-related protein

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

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

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

6. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

来源 Source

Entity 3 Entity 3 polymer

Polymer Polymer

来源 Source

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (7 domains)

CATH v4.4 (7 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)