8g5h

Native GABA-A receptor from the mouse brain, ortho-alpha1-alpha3-beta2-gamma2 subtype, in complex with GABA, Zolpidem, and endogenous neurosteroid

Method: ELECTRON MICROSCOPY Dmax: 125.8 Å Quality: REASONABLE

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

Gamma-aminobutyric acid receptor subunit beta-2

OrganismNot specified

UniProt P63137

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 7 其他Polymer 7 PDB declaration: heptameric(7) Consistent with protein copy count Chain B; UniProt 1–512 Chain E; UniProt 1–512 Not recorded Gamma-aminobutyric acid receptor subunit alpha-1 × 1 (P62812) Gamma-aminobutyric acid receptor subunit gamma-2 × 1 (P22723) Heavy Chain of 8E3 Fab × 1 Light Chain of 8E3 Fab × 1 Gamma-aminobutyric acid receptor subunit alpha-3 × 1 (P26049) ;alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 5 ;alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ABU GAMMA-AMINO-BUTANOIC ACID × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 R5R Zolpidem × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 Y4B allopregnanolone × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.89 Å

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.

6 other PDB entries and 6 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GBRB2_MOUSE
Isoform
PDB entities 1
Chains and sequence ranges Author chain B; PDBConstruct 1–512; UniProt 1–512 Author chain E; PDBConstruct 1–512; UniProt 1–512

Gamma-aminobutyric acid receptor subunit alpha-1

OrganismNot specified

UniProt P62812

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 7 其他Polymer 7 PDB declaration: heptameric(7) Consistent with protein copy count Chain C; UniProt 1–455 Not recorded Gamma-aminobutyric acid receptor subunit beta-2 × 2 (P63137) Gamma-aminobutyric acid receptor subunit gamma-2 × 1 (P22723) Heavy Chain of 8E3 Fab × 1 Light Chain of 8E3 Fab × 1 Gamma-aminobutyric acid receptor subunit alpha-3 × 1 (P26049) ;alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 5 ;alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ABU GAMMA-AMINO-BUTANOIC ACID × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 R5R Zolpidem × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 Y4B allopregnanolone × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.89 Å

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.

9 other PDB entries and 9 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GBRA1_MOUSE
Isoform
PDB entities 2
Chains and sequence ranges Author chain C; PDBConstruct 1–455; UniProt 1–455

Gamma-aminobutyric acid receptor subunit gamma-2

OrganismNot specified

UniProt P22723

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 7 其他Polymer 7 PDB declaration: heptameric(7) Consistent with protein copy count Chain D; UniProt 1–474 Not recorded Gamma-aminobutyric acid receptor subunit beta-2 × 2 (P63137) Gamma-aminobutyric acid receptor subunit alpha-1 × 1 (P62812) Heavy Chain of 8E3 Fab × 1 Light Chain of 8E3 Fab × 1 Gamma-aminobutyric acid receptor subunit alpha-3 × 1 (P26049) ;alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 5 ;alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ABU GAMMA-AMINO-BUTANOIC ACID × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 R5R Zolpidem × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 Y4B allopregnanolone × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.89 Å

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.

7 other PDB entries and 7 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GBRG2_MOUSE
Isoform
PDB entities 3
Chains and sequence ranges Author chain D; PDBConstruct 1–474; UniProt 1–474

Gamma-aminobutyric acid receptor subunit alpha-3

OrganismNot specified

UniProt P26049

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 7 其他Polymer 7 PDB declaration: heptameric(7) Consistent with protein copy count Chain A; UniProt 1–492 Not recorded Gamma-aminobutyric acid receptor subunit beta-2 × 2 (P63137) Gamma-aminobutyric acid receptor subunit alpha-1 × 1 (P62812) Gamma-aminobutyric acid receptor subunit gamma-2 × 1 (P22723) Heavy Chain of 8E3 Fab × 1 Light Chain of 8E3 Fab × 1 ;alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 5 ;alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ABU GAMMA-AMINO-BUTANOIC ACID × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 R5R Zolpidem × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 Y4B allopregnanolone × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.89 Å

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.

3 other PDB entries and 3 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GBRA3_MOUSE
Isoform
PDB entities 6
Chains and sequence ranges Author chain A; PDBConstruct 1–492; UniProt 1–492

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 8g5h

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8g5h
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8g5h
Deposition date deposition_date2023-02-13
Structure title titleNative GABA-A receptor from the mouse brain, ortho-alpha1-alpha3-beta2-gamma2 subtype, in complex with GABA, Zolpidem, and endogenous neurosteroid
Keywords keywordsligand-gated ion channel, cys-loop receptor, neurotransmitter receptor, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier40.81
Radius of gyration Rg (electron density) rg_electron40.39
Forward intensity I(0) i0683722000.00
Molecular weight molecular_weight225330.0 kDa
Excluded volume excluded_volume286020 ų
Envelope volume envelope_volume362400 ų
Hydration-shell volume shell_volume73428 ų
Envelope diameter envelope_diameter136.1
Shell Rg shell_rg47.06
Envelope Rg envelope_rg40.04
Shape Rg shape_rg40.40
Total Rg total_rg40.71
Total atoms total_atoms15875
Residues n_residues1887
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 dmax125.8
Rg (real space) rg_real40.71
Rg uncertainty (real space) rg_real_error0.74
I(0) (real space) i0_real6.8370e+08
I(0) uncertainty (real space) i0_real_error1.0800e+07
Rg (reciprocal space) rg_reciprocal40.81
I(0) (reciprocal space) i0_reciprocal683800000.0000
Solution quality estimate total_estimate0.6562
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary48.4
Skewness Skewness skewness0.246
Kurtosis Kurtosis kurtosis-0.502
Angular range angular_range— – 0.1950 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha88550000.0000
Real-space data points n_real_points40
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.948; Stabil: 1.000; Sysdev: 0.025; Positv: 1.000; Valcen: 0.995; Smooth: 0.612

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (14)

8. Citations (2)

9. Files and Curves (10)