7txf

The allosteric binding mode of alphaD-conotoxin VxXXB

Method: X-RAY DIFFRACTION Dmax: 93.1 Å Quality: EXCELLENT

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

Acetylcholine-binding protein

Lymnaea stagnalis

UniProt P58154

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 heterocomplex Heteromer Protein × 8 PDB declaration: octameric(8) Consistent with protein copy count Chain A; UniProt 20–224 Chain B; UniProt 20–224 Chain C; UniProt 20–224 Chain D; UniProt 20–224 Chain E; UniProt 20–224 Not recorded Alpha-conotoxin VxXXB × 3 (P0C1W6) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;296.15 K;0.91 M lithium chloride, 16% PEG6000 and 0.1 M MES monohydrate pH 6.4 Resolution 2.47 Å R-free 0.246

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.

59 other PDB entries and 122 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ACHP_LYMST
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–205; UniProt 20–224 Author chain B; PDBConstruct 1–205; UniProt 20–224 Author chain C; PDBConstruct 1–205; UniProt 20–224 Author chain D; PDBConstruct 1–205; UniProt 20–224 Author chain E; PDBConstruct 1–205; UniProt 20–224

Alpha-conotoxin VxXXB

OrganismNot specified

UniProt P0C1W6

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 heterocomplex Heteromer Protein × 8 PDB declaration: octameric(8) Consistent with protein copy count Chain F; UniProt 66–95 Chain G; UniProt 66–95 Chain H; UniProt 66–95 Not recorded Acetylcholine-binding protein × 5 (P58154) X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;296.15 K;0.91 M lithium chloride, 16% PEG6000 and 0.1 M MES monohydrate pH 6.4 Resolution 2.47 Å R-free 0.246

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.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence
UniProt name CDKB_CONVX
Isoform
PDB entities 2
Chains and sequence ranges Author chain F; PDBConstruct 1–30; UniProt 66–95 Author chain G; PDBConstruct 1–30; UniProt 66–95 Author chain H; PDBConstruct 1–30; UniProt 66–95

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 7txf

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7txf
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7txf
Deposition date deposition_date2022-02-09
Structure title titleThe allosteric binding mode of alphaD-conotoxin VxXXB
Keywords keywordsAlpha-conotoxin, Complex, ACETYLCHOLINE-BINDING PROTEIN, CHOLINE-BINDING PROTEIN-ANTAGONIST complex, PEPTIDE BINDING PROTEIN; PEPTIDE BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.64
Radius of gyration Rg (electron density) rg_electron30.76
Forward intensity I(0) i0265929000.00
Molecular weight molecular_weight124840.0 kDa
Excluded volume excluded_volume154150 ų
Envelope volume envelope_volume201260 ų
Hydration-shell volume shell_volume51624 ų
Envelope diameter envelope_diameter100.7
Shell Rg shell_rg40.12
Envelope Rg envelope_rg30.16
Shape Rg shape_rg30.71
Total Rg total_rg31.73
Total atoms total_atoms8771
Residues n_residues1103
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 dmax93.1
Rg (real space) rg_real32.31
Rg uncertainty (real space) rg_real_error0.45
I(0) (real space) i0_real2.6590e+08
I(0) uncertainty (real space) i0_real_error4.1040e+06
Rg (reciprocal space) rg_reciprocal32.45
I(0) (reciprocal space) i0_reciprocal266000000.0000
Solution quality estimate total_estimate0.9050
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary43.7
Skewness Skewness skewness-0.035
Kurtosis Kurtosis kurtosis-0.569
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha40630000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.958; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.967; Smooth: 0.923

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

8. Citations (1)

9. Files and Curves (10)