4g8m

Crystal structure of the GluA2 ligand-binding domain (S1S2J) in complex with the agonist CBG-IV at 2.05A resolution

Method: X-RAY DIFFRACTION Dmax: 81.8 Å Quality: GOOD

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

Glutamate receptor 2

Rattus norvegicus

UniProt P19491

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 413–527 Chain A; UniProt 653–796 Chain B; UniProt 413–527 Chain B; UniProt 653–796 Fragment:UNP residues 413-527, 653-796 G8M (1S,2R)-2-[(S)-amino(carboxy)methyl]cyclobutanecarboxylic acid × 2 SO4 SULFATE ION × 7 CL CHLORIDE ION × 3 GOL GLYCEROL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;280 K;24.4% PEG4000, 0.3M lithium sulfate, 0.1M phosphate-citrate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 280K Resolution 2.05 Å R-free 0.228
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 413–527 Chain A; UniProt 653–796 Chain B; UniProt 413–527 Chain B; UniProt 653–796 Fragment:UNP residues 413-527, 653-796 G8M (1S,2R)-2-[(S)-amino(carboxy)methyl]cyclobutanecarboxylic acid × 2 SO4 SULFATE ION × 7 CL CHLORIDE ION × 3 GOL GLYCEROL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;280 K;24.4% PEG4000, 0.3M lithium sulfate, 0.1M phosphate-citrate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 280K Resolution 2.05 Å R-free 0.228

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.

333 other PDB entries and 481 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GRIA2_RAT
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–117; UniProt 413–527 Author chain A; PDBConstruct 120–263; UniProt 653–796 Author chain B; PDBConstruct 3–117; UniProt 413–527 Author chain B; PDBConstruct 120–263; UniProt 653–796

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 4g8m

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4g8m
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4g8m
Deposition date deposition_date2012-07-23
Structure title titleCrystal structure of the GluA2 ligand-binding domain (S1S2J) in complex with the agonist CBG-IV at 2.05A resolution
Keywords keywordsAMPA receptor ligand-binding domain, GluR2-S1S2J, agonist, membrane protein, Membrane Protein-Agonist complex; Membrane Protein/Agonist
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier25.37
Radius of gyration Rg (electron density) rg_electron24.11
Forward intensity I(0) i058521700.00
Molecular weight molecular_weight59465.0 kDa
Excluded volume excluded_volume74442 ų
Envelope volume envelope_volume90602 ų
Hydration-shell volume shell_volume30434 ų
Envelope diameter envelope_diameter84.9
Shell Rg shell_rg32.17
Envelope Rg envelope_rg24.26
Shape Rg shape_rg24.06
Total Rg total_rg25.16
Total atoms total_atoms4151
Residues n_residues522
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 dmax81.8
Rg (real space) rg_real25.23
Rg uncertainty (real space) rg_real_error0.55
I(0) (real space) i0_real5.8520e+07
I(0) uncertainty (real space) i0_real_error8.6940e+05
Rg (reciprocal space) rg_reciprocal25.27
I(0) (reciprocal space) i0_reciprocal58520000.0000
Solution quality estimate total_estimate0.8953
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary32.5
Skewness Skewness skewness0.133
Kurtosis Kurtosis kurtosis-0.505
Angular range angular_range— – 0.3150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha14190000.0000
Real-space data points n_real_points64
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.879; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.998

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd4g8ma1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.94 — Periplasmic binding protein-like II
Superfamily Superfamily superfamilyc.94.1 — Periplasmic binding protein-like II
Family Family familyc.94.1.1 — Phosphate binding protein-like
Domain ID domain_idd4g8ma2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd4g8mb1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.94 — Periplasmic binding protein-like II
Superfamily Superfamily superfamilyc.94.1 — Periplasmic binding protein-like II
Family Family familyc.94.1.1 — Phosphate binding protein-like
Domain ID domain_idd4g8mb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (4 domains)

Domain ID domain_id4g8mA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily10 — Periplasmic binding protein-like II
Domain ID domain_id4g8mA02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily10 — Periplasmic binding protein-like II
Domain ID domain_id4g8mB01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily10 — Periplasmic binding protein-like II
Domain ID domain_id4g8mB02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily10 — Periplasmic binding protein-like II

8. Citations (1)

9. Files and Curves (10)