SAXSdb — 6g9q

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

H-2 class I histocompatibility antigen, D-B alpha chain

Mus musculus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	Beta-2-microglobulin × 1 （P01887） T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region × 1 （A0A0G2JF94,P01849） T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region × 1 （P01852,P04213） Dopamine beta-hydroxylase × 1 （Q64237） GLYCEROL × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HA11_MOUSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–276； UniProt 25–300

Beta-2-microglobulin

Mus musculus

UniProt P01887

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	H-2 class I histocompatibility antigen, D-B alpha chain × 1 （P01899） T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region × 1 （A0A0G2JF94,P01849） T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region × 1 （P01852,P04213） Dopamine beta-hydroxylase × 1 （Q64237） GLYCEROL × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	B2MG_MOUSE
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–119； UniProt 1–119

T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region

Mus musculus

UniProt A0A0G2JF94

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	H-2 class I histocompatibility antigen, D-B alpha chain × 1 （P01899） Beta-2-microglobulin × 1 （P01887） T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region × 1 （P01852,P04213） Dopamine beta-hydroxylase × 1 （Q64237） GLYCEROL × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A0G2JF94_MOUSE
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain G； PDBConstruct 1–99； UniProt 22–120

T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region

Mus musculus

UniProt P01849

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	H-2 class I histocompatibility antigen, D-B alpha chain × 1 （P01899） Beta-2-microglobulin × 1 （P01887） T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region × 1 （P01852,P04213） Dopamine beta-hydroxylase × 1 （Q64237） GLYCEROL × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCA_MOUSE
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain G； PDBConstruct 118–205； UniProt 1–88

T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region

Mus musculus

UniProt P01852

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	H-2 class I histocompatibility antigen, D-B alpha chain × 1 （P01899） Beta-2-microglobulin × 1 （P01887） T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region × 1 （A0A0G2JF94,P01849） Dopamine beta-hydroxylase × 1 （Q64237） GLYCEROL × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCB1_MOUSE
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain H； PDBConstruct 112–238； UniProt 1–127

T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region

Mus musculus

UniProt P04213

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	H-2 class I histocompatibility antigen, D-B alpha chain × 1 （P01899） Beta-2-microglobulin × 1 （P01887） T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region × 1 （A0A0G2JF94,P01849） Dopamine beta-hydroxylase × 1 （Q64237） GLYCEROL × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TVB5_MOUSE
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain H； PDBConstruct 1–111； UniProt 11–122

Dopamine beta-hydroxylase

OrganismNot specified

UniProt Q64237

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	H-2 class I histocompatibility antigen, D-B alpha chain × 1 （P01899） Beta-2-microglobulin × 1 （P01887） T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region × 1 （A0A0G2JF94,P01849） T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region × 1 （P01852,P04213） GLYCEROL × 1 water × 5	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DOPO_MOUSE
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain P； PDBConstruct 1–9； UniProt 557–565

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	6g9q
Deposition date deposition_date	2018-04-11
Structure title title	Ternary complex of P14 TCR with murine MHC class I H-2 Db in complex with self-antigen derived from dopamine monooxygenase.
Keywords keywords	LCMV, cross-reactivity, MHC class I, TCR, APL, IMMUNE SYSTEM; IMMUNE SYSTEM
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

6g9q__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

6g9q__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6g9q__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	37.43 Å
Rg (electron density)	37.95 Å
Total Rg	38.17 Å
Atom count	6500
Residues	808
Excluded volume	114380 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6g9q__assembly_1__model_1`	pentameric （5）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (7)

Entity 1 Entity 1 polymer

Description description	H-2 class I histocompatibility antigen, D-B alpha chain
Molecular weight formula_weight	32087.7 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	6675

GPHSMRYFETAVSRPGLEEPRYISVGYVDNKEFVRFDSDAENPRYEPRAPWMEQEGPEYWERETQKAKGQEQWFRVSLRNLLGYYNQSAGGSHTLQQMSGCDLGSDWRLLRGYLQFAYEGRDYIALNEDLKTWTAADMAAQITRRKWEQSGAAEHYKAYLEGECVEWLHRYLKNGNATLLRTDSPKAHVTHHPRSKGEVTLRCWALGFYPADITLTWQLNGEELTQDMELVETRPAGDGTFQKWASVVVPLGKEQNYTCRVYHEGLPEPLTLRWEP

Source Source

Source organism organism	Mus musculus
Common name common_name	House Mouse
NCBI taxonomy ID ncbi_taxonomy_id	10090
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Beta-2-microglobulin
Molecular weight formula_weight	13795.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MARSVTLVFLVLVSLTGLMGIQKTPQIQVYSRHPPENGKPNILNCYVTQFHPPHIEIQMLKNGKKIPKVEMSDMSFSKDWSFYILAHTEFTPTETDTYACRVKHDSMAEPKTVYWDRDM

Source Source

Source organism organism	Mus musculus
Common name common_name	House Mouse
NCBI taxonomy ID ncbi_taxonomy_id	10090
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region
Molecular weight formula_weight	23030.7 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

QQKEKHDQQQVRQSPQSLTVWEGGTTVLTCSYEDSTFNYFPWYQQFPGEGPALLISILSVSDKKEDGRFTTFFNKREKKLSLHIIDSQPGDSATYFCAALYGNEKITFGAGTKLTIKPNIQNPDPAVYQLKDPKSQDSTLCLFTDFDSQINVPKTMESGTFITDKCVLDMKAMDSKSNGAIAWSNQTSFTCQDIFKETNATYPSS

Source Source

Source organism organism	Mus musculus
Common name common_name	House Mouse
NCBI taxonomy ID ncbi_taxonomy_id	10090
Host organism host_organism	Escherichia coli

Entity 4 Entity 4 polymer

Description description	T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region
Molecular weight formula_weight	26663.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

AVTQSPRSKVAVTGGKVTLSCHQTNNHDYMYWYRQDTGHGLRLIHYSYVADSTEKGDIPDGYKASRPSQENFSLILELASLSQTAVYFCASSDAGGRNTLYFGAGTRLSVLEDLRNVTPPKVSLFEPSKAEISNKQKATLVCLARGFFPDHVELSWWVNGKEVHSGVCTDPQAYKESNYSYSLSSRLRVSATFWHNPRNHFRCQVQFHGLSEEDKWPEGSPKPVTQNISAEAWGRADC

Source Source

Source organism organism	Mus musculus
Common name common_name	House Mouse
NCBI taxonomy ID ncbi_taxonomy_id	10090
Host organism host_organism	Escherichia coli

Entity 5 Entity 5 polymer

Description description	Dopamine beta-hydroxylase
Molecular weight formula_weight	1038.2 kDa
EC 编号 ec_number	1.14.17.1
Mutation mutation	L3P
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	P

KAPYDYAPI

Entity 6 Entity 6 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	175

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6. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id	6g9qA01
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	6g9qA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	6g9qB00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	6g9qG01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	6g9qH01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	6g9qH02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

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Unit-cell length a length_a	256.383 Å
Unit-cell length b length_b	46.622 Å
Unit-cell length c length_c	90.059 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	94.20 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.890 Å
Low-resolution limit resolution_low	50.420 Å
R factor r_factor	0.1903
R_work r_work	0.1873
R_free r_free	0.2475

Ternary complex of P14 TCR with murine MHC class I H-2 Db in complex with self-antigen derived from dopamine monooxygenase.

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

H-2 class I histocompatibility antigen, D-B alpha chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Beta-2-microglobulin

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T cell receptor alpha variable 14-1,T-cell receptor alpha chain C region

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-cell receptor beta chain V region C5,T-cell receptor beta-1 chain C region

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Dopamine beta-hydroxylase

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

6g9q__assembly_1__model_1

6g9q__assembly_1__model_1 | I(q)

6g9q__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (7)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer