9b34

Structure of concanavalin A (ConA) dimer from the open-state structure of kainate receptor GluK2 in complex with agonist glutamate and positive allosteric modulator BPAM344 bound to two ConA dimers. Type I interface between GluK2 ligand-binding domain and ConA

Method: ELECTRON MICROSCOPY Dmax: 82.4 Å Quality: GOOD

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

Concanavalin A

OrganismNot specified

UniProt P02866

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 E; UniProt 164–281 Chain E; UniProt 30–148 Chain F; UniProt 164–281 Chain F; UniProt 30–148 Not recorded ZN ZINC ION × 2 CA CALCIUM ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.58 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.

72 other PDB entries and 89 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CONA_CANEN
Isoform
PDB entities 1
Chains and sequence ranges Author chain E; PDBConstruct 1–118; UniProt 164–281 Author chain E; PDBConstruct 119–237; UniProt 30–148 Author chain F; PDBConstruct 1–118; UniProt 164–281 Author chain F; PDBConstruct 119–237; UniProt 30–148

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 9b34

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9b34
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9b34
Deposition date deposition_date2024-03-18
Structure title titleStructure of concanavalin A (ConA) dimer from the open-state structure of kainate receptor GluK2 in complex with agonist glutamate and positive allosteric modulator BPAM344 bound to two ConA dimers. Type I interface between GluK2 ligand-binding domain and ConA
Keywords keywordskainate receptor, GluK2, glutamate, positive allosteric modulator, BPAM344, open, concanavalin A, ConA, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier25.90
Radius of gyration Rg (electron density) rg_electron24.71
Forward intensity I(0) i044878300.00
Molecular weight molecular_weight51350.0 kDa
Excluded volume excluded_volume64021 ų
Envelope volume envelope_volume76707 ų
Hydration-shell volume shell_volume26464 ų
Envelope diameter envelope_diameter83.3
Shell Rg shell_rg31.48
Envelope Rg envelope_rg24.84
Shape Rg shape_rg24.66
Total Rg total_rg25.65
Total atoms total_atoms3619
Residues n_residues474
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 dmax82.4
Rg (real space) rg_real25.96
Rg uncertainty (real space) rg_real_error0.55
I(0) (real space) i0_real4.4880e+07
I(0) uncertainty (real space) i0_real_error6.0880e+05
Rg (reciprocal space) rg_reciprocal25.94
I(0) (reciprocal space) i0_reciprocal44880000.0000
Solution quality estimate total_estimate0.8931
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary27.0
Skewness Skewness skewness0.410
Kurtosis Kurtosis kurtosis-0.433
Angular range angular_range— – 0.3050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha7699000.0000
Real-space data points n_real_points62
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.897; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.973; Smooth: 0.940

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)