1bgk

SEA ANEMONE TOXIN (BGK) WITH HIGH AFFINITY FOR VOLTAGE DEPENDENT POTASSIUM CHANNEL, NMR, 15 STRUCTURES

Method: SOLUTION NMR D_max: 28.8 Å Quality: GOOD

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

BGK

Bunodosoma granulifera

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 1–37	Not recorded	No other associated polymer	SOLUTION NMR NMR measurement conditions：pH 3.5；293 K	Resolution not provided

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	TXBGK_BUNGR
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–37； UniProt 1–37

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

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1bgk
Deposition date deposition_date	1996-05-08
Structure title title	SEA ANEMONE TOXIN (BGK) WITH HIGH AFFINITY FOR VOLTAGE DEPENDENT POTASSIUM CHANNEL, NMR, 15 STRUCTURES
Keywords keywords	NEUROTOXIN, POTASSIUM CHANNEL INHIBITOR; POTASSIUM CHANNEL INHIBITOR
Experimental Method method	SOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier	8.35 Å
Radius of gyration Rg (electron density) rg_electron	8.56 Å
Forward intensity I(0) i0	74790900.00
Molecular weight molecular_weight	64305.0 kDa
Excluded volume excluded_volume	77450 Å³
Envelope volume envelope_volume	7859 Å³
Hydration-shell volume shell_volume	7040 Å³
Envelope diameter envelope_diameter	31.5 Å
Shell Rg shell_rg	15.06 Å
Envelope Rg envelope_rg	10.20 Å
Shape Rg shape_rg	8.53 Å
Total Rg total_rg	8.88 Å
Total atoms total_atoms	8715
Residues n_residues	555
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	28.8 Å
Rg (real space) rg_real	8.30 Å
Rg uncertainty (real space) rg_real_error	0.24 Å
I(0) (real space) i0_real	7.4790e+07
I(0) uncertainty (real space) i0_real_error	6.5800e+05
Rg (reciprocal space) rg_reciprocal	8.30 Å
I(0) (reciprocal space) i0_reciprocal	74790000.0000
Solution quality estimate total_estimate	0.8629
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	10.9 Å
Skewness Skewness skewness	0.162
Kurtosis Kurtosis kurtosis	-0.291
Angular range angular_range	— – 0.5000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	39330.0000
Real-space data points n_real_points	80
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.760; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.942

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (1)

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7. Fold Classification (SCOP + CATH) 1 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1bgka_
Class class	g — Small proteins
Fold Fold fold	g.19 — Crisp domain-like
Superfamily Superfamily superfamily	g.19.1 — Crisp domain-like
Family Family family	g.19.1.1 — Sea anemone toxin k

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8. Citations (1)

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	1

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Description description	BGK
Molecular weight formula_weight	4291.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	8715

来源生物 organism	Bunodosoma granulifera
NCBI Class编号 ncbi_taxonomy_id	31164

SEA ANEMONE TOXIN (BGK) WITH HIGH AFFINITY FOR VOLTAGE DEPENDENT POTASSIUM CHANNEL, NMR, 15 STRUCTURES

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

BGK

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

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

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

6. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

7. Fold Classification (SCOP + CATH) 1 domains

SCOP 2.08 (1 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

fit	/app/data/saxs_computation/bg/1bgk/1bgk.fit
pddf	/app/data/pr_computation/bg/1bgk/1bgk.pr.out
profile	/app/data/saxs_computation/bg/1bgk/1bgk.dat