1lb9

Crystal structure of the Non-desensitizing GluR2 ligand binding core mutant (S1S2J-L483Y) in complex with antagonist DNQX at 2.3 A resolution

Method: X-RAY DIFFRACTION Dmax: 79.4 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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 413–527 Chain A; UniProt 653–796 Fragment:ligand binding core (flop) Mutation:L483Y DNQ 6,7-DINITROQUINOXALINE-2,3-DIONE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5;277 K;PEG 4000, ammonium sulfate, sodium acetate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K Resolution 2.30 Å R-free 0.268
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 413–527 Chain B; UniProt 653–796 Fragment:ligand binding core (flop) Mutation:L483Y DNQ 6,7-DINITROQUINOXALINE-2,3-DIONE × 1 SO4 SULFATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5;277 K;PEG 4000, ammonium sulfate, sodium acetate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K Resolution 2.30 Å R-free 0.268

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 1lb9

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1lb9
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1lb9
Deposition date deposition_date2002-04-02
Structure title titleCrystal structure of the Non-desensitizing GluR2 ligand binding core mutant (S1S2J-L483Y) in complex with antagonist DNQX at 2.3 A resolution
Keywords keywordsAMPA receptor, GluR2, S1S2, ligand-binding core, Non-desensitizing, point-mutation, L483Y, antagonist, DNQX, Membrane protein; MEMBRANE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.83
Radius of gyration Rg (electron density) rg_electron23.70
Forward intensity I(0) i053775600.00
Molecular weight molecular_weight57386.0 kDa
Excluded volume excluded_volume71989 ų
Envelope volume envelope_volume86197 ų
Hydration-shell volume shell_volume29638 ų
Envelope diameter envelope_diameter83.2
Shell Rg shell_rg31.47
Envelope Rg envelope_rg23.71
Shape Rg shape_rg23.67
Total Rg total_rg24.67
Total atoms total_atoms4025
Residues n_residues514
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 dmax79.4
Rg (real space) rg_real24.64
Rg uncertainty (real space) rg_real_error0.49
I(0) (real space) i0_real5.3780e+07
I(0) uncertainty (real space) i0_real_error6.7850e+05
Rg (reciprocal space) rg_reciprocal24.69
I(0) (reciprocal space) i0_reciprocal53780000.0000
Solution quality estimate total_estimate0.8933
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary32.8
Skewness Skewness skewness0.110
Kurtosis Kurtosis kurtosis-0.480
Angular range angular_range— – 0.3200 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha12040000.0000
Real-space data points n_real_points64
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.877; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.981

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1lb9a_
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_idd1lb9b_
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

CATH v4.4 (4 domains)

Domain ID domain_id1lb9A01
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_id1lb9A02
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_id1lb9B01
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_id1lb9B02
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)