SAXSdb — 2bg9

▼

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

ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA CHAIN

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	ACETYLCHOLINE RECEPTOR PROTEIN, BETA CHAIN × 1 （Q6S3I0） ACETYLCHOLINE RECEPTOR PROTEIN, DELTA CHAIN × 1 （Q6S3H8） ACETYLCHOLINE RECEPTOR PROTEIN, GAMMA CHAIN × 1 （Q6S3H9）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ACHA_TORMA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–306； UniProt 25–330 Author chain A； PDBConstruct 307–370； UniProt 398–461 Author chain D； PDBConstruct 1–306； UniProt 25–330 Author chain D； PDBConstruct 307–370； UniProt 398–461

ACETYLCHOLINE RECEPTOR PROTEIN, BETA CHAIN

OrganismNot specified

UniProt Q6S3I0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA CHAIN × 2 （P02711） ACETYLCHOLINE RECEPTOR PROTEIN, DELTA CHAIN × 1 （Q6S3H8） ACETYLCHOLINE RECEPTOR PROTEIN, GAMMA CHAIN × 1 （Q6S3H9）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q6S3I0
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–164； UniProt 25–188 Author chain B； PDBConstruct 165–303； UniProt 198–336 Author chain B； PDBConstruct 304–370； UniProt 427–493

ACETYLCHOLINE RECEPTOR PROTEIN, DELTA CHAIN

OrganismNot specified

UniProt Q6S3H8

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA CHAIN × 2 （P02711） ACETYLCHOLINE RECEPTOR PROTEIN, BETA CHAIN × 1 （Q6S3I0） ACETYLCHOLINE RECEPTOR PROTEIN, GAMMA CHAIN × 1 （Q6S3H9）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q6S3H8
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–162； UniProt 22–183 Author chain C； PDBConstruct 163–305； UniProt 199–341 Author chain C； PDBConstruct 306–369； UniProt 442–505

ACETYLCHOLINE RECEPTOR PROTEIN, GAMMA CHAIN

OrganismNot specified

UniProt Q6S3H9

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA CHAIN × 2 （P02711） ACETYLCHOLINE RECEPTOR PROTEIN, BETA CHAIN × 1 （Q6S3I0） ACETYLCHOLINE RECEPTOR PROTEIN, DELTA CHAIN × 1 （Q6S3H8）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q6S3H9
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain E； PDBConstruct 1–164； UniProt 18–181 Author chain E； PDBConstruct 165–307； UniProt 189–332 Author chain E； PDBConstruct 308–370； UniProt 432–493

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	2bg9
Deposition date deposition_date	2004-12-17
Structure title title	REFINED STRUCTURE OF THE NICOTINIC ACETYLCHOLINE RECEPTOR AT 4A RESOLUTION.
Keywords keywords	ION CHANNEL/RECEPTOR, ACETYLCHOLINE RECEPTOR, ION CHANNEL, ION TRANSPORT, POSTSYNAPTIC MEMBRANE, ION CHANNEL-RECEPTOR complex; ION CHANNEL/RECEPTOR
Experimental Method method	ELECTRON MICROSCOPY

▼

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.

2bg9__assembly_1__model_1

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

Download this curve (.dat)

2bg9__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2bg9__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	43.92 Å
Rg (electron density)	43.21 Å
Total Rg	43.42 Å
Atom count	14924
Residues	1849
Excluded volume	269820 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2bg9__assembly_1__model_1`	pentameric （5）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA CHAIN
Molecular weight formula_weight	42501.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,D
Atom count atom_count	14924

SEHETRLVANLLENYNKVIRPVEHHTHFVDITVGLQLIQLINVDEVNQIVETNVRLRQQWIDVRLRWNPADYGGIKKIRLPSDDVWLPDLVLYNNADGDFAIVHMTKLLLDYTGKIMWTPPAIFKSYCEIIVTHFPFDQQNCTMKLGIWTYDGTKVSISPESDRPDLSTFMESGEWVMKDYRGWKHWVYYTCCPDTPYLDITYHFIMQRIPLYFVVNVIIPCLLFSFLTVLVFYLPTDSGEKMTLSISVLLSLTVFLLVIVELIPSTSSAVPLIGKYMLFTMIFVISSIIVTVVVINTHHRSPSTHSAIEGVKYIAEHMKSDEESSNAAEEWKYVAMVIDHILLCVFMLICIIGTVSVFAGRLIELSQEG

Entity 2 Entity 2 polymer

Description description	ACETYLCHOLINE RECEPTOR PROTEIN, BETA CHAIN
Molecular weight formula_weight	42167.4 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

SVMEDTLLSVLFENYNPKVRPSQTVGDKVTVRVGLTLTSLLILNEKNEEMTTSVFLNLAWTDYRLQWDPAAYEGIKDLSIPSDDVWQPDIVLMNNNDGSFEITLHVNVLVQHTGAVSWHPSAIYRSSCTIKVMYFPFDWQNCTMVFKSYTYDTSEVILQHALDAMINQDAFTENGQWSIEHKPSRKNWRSDDPSYEDVTFYLIIQRKPLFYIVYTIVPCILISILAILVFYLPPDAGEKMSLSISALLALTVFLLLLADKVPETSLSVPIIISYLMFIMILVAFSVILSVVVLNLHHRSPNTHEAVEAIKYIAEQLESASEFDDLKKDWQYVAMVADRLFLYIFITMCSIGTFSIFLDASHNVPPDNPFA

Entity 3 Entity 3 polymer

Description description	ACETYLCHOLINE RECEPTOR PROTEIN, DELTA CHAIN
Molecular weight formula_weight	42280.7 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

VNEEERLINDLLIVNKYNKHVRPVKHNNEVVNIALSLTLSNLISLKETDETLTTNVWMDHAWYDHRLTWNASEYSDISILRLRPELIWIPDIVLQNNNDGQYNVAYFCNVLVRPNGYVTWLPPAIFRSSCPINVLYFPFDWQNCSLKFTALNYNANEISMDLIIDPEAFTENGEWEIIHKPAKKNIYGDKFPNGTNYQDVTFYLIIRRKPLFYVINFITPCVLISFLAALAFYLPAESGEKMSTAICVLLAQAVFLLLTSQRLPETALAVPLIGKYLMFIMSLVTGVVVNCGIVLNFHFRTPSTHSGIDSTNYIVKQIKEKNAYDEEVGNWNLVGQTIDRLSMFIITPVMVLGTIFIFVMGNFNRPPAK

Entity 4 Entity 4 polymer

Description description	ACETYLCHOLINE RECEPTOR PROTEIN, GAMMA CHAIN
Molecular weight formula_weight	42299.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

NEEGRLIEKLLGDYDKRIKPAKTLDHVIDVTLKLTLTNLISLNEKEEALTTNVWIEIQWNDYRLSWNTSEYEGIDLVRIPSELLWLPDVVLENNVDGQFEVAYYANVLVYNDGSMYWLPPAIYRSTCPIAVTYFPFDWQNCSLVFRSQTYNAHEVNLQLSAEEGIDPEDFTENGEWTIRHRPAKKNYNWQLTKDDIDFQEIIFFLIIQRKPLFYIINIIAPCVLISSLVVLVYFLPAQAGGQKCTLSISVLLAQTIFLFLIAQKVPETSLNVPLIGKYLIFVMFVSLVIVTNCVIVLNVSLRTPNTHSCVEACNFIAKSTKEQNDSGSENENWVLIGKVIDKACFWIALLLFSLGTLAIFLTGHLNQVPE

▼

6. Fold Classification (SCOP + CATH) 10 domains

CATH v4.4 (10 domains)

Domain ID domain_id	2bg9A01
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily	10 — Neurotransmitter-gated ion-channel ligand-binding domain

Domain ID domain_id	2bg9A02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	390 — Neurotransmitter-gated ion-channel transmembrane domain

Domain ID domain_id	2bg9B01
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily	10 — Neurotransmitter-gated ion-channel ligand-binding domain

Domain ID domain_id	2bg9B02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	390 — Neurotransmitter-gated ion-channel transmembrane domain

Domain ID domain_id	2bg9C01
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily	10 — Neurotransmitter-gated ion-channel ligand-binding domain

Domain ID domain_id	2bg9C02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	390 — Neurotransmitter-gated ion-channel transmembrane domain

Domain ID domain_id	2bg9D01
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily	10 — Neurotransmitter-gated ion-channel ligand-binding domain

Domain ID domain_id	2bg9D02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	390 — Neurotransmitter-gated ion-channel transmembrane domain

Domain ID domain_id	2bg9E01
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	170 — Acetylcholine Binding Protein; Chain: A,
Homologous superfamily homologous superfamily	10 — Neurotransmitter-gated ion-channel ligand-binding domain

Domain ID domain_id	2bg9E02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	390 — Neurotransmitter-gated ion-channel transmembrane domain

▶

Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	4.000 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	4.00 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	—

REFINED STRUCTURE OF THE NICOTINIC ACETYLCHOLINE RECEPTOR AT 4A RESOLUTION.

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

ACETYLCHOLINE RECEPTOR PROTEIN, ALPHA CHAIN

State in the Current Structure

Other States of the Same Protein in the Database

ACETYLCHOLINE RECEPTOR PROTEIN, BETA CHAIN

State in the Current Structure

Other States of the Same Protein in the Database

ACETYLCHOLINE RECEPTOR PROTEIN, DELTA CHAIN

State in the Current Structure

Other States of the Same Protein in the Database

ACETYLCHOLINE RECEPTOR PROTEIN, GAMMA CHAIN

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

2bg9__assembly_1__model_1

2bg9__assembly_1__model_1 | I(q)

2bg9__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 10 domains

CATH v4.4 (10 domains)

7. Citations (2)

REFINED STRUCTURE OF THE NICOTINIC ACETYLCHOLINE RECEPTOR AT 4A RESOLUTION.

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

ACETYLCHOLINE RECEPTOR PROTEIN, 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

ACETYLCHOLINE RECEPTOR PROTEIN, BETA 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

ACETYLCHOLINE RECEPTOR PROTEIN, DELTA 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

ACETYLCHOLINE RECEPTOR PROTEIN, GAMMA 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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

2bg9__assembly_1__model_1

2bg9__assembly_1__model_1 | I(q)

2bg9__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 10 domains

CATH v4.4 (10 domains)

7. Citations (2)