SAXSdb — 2nbt

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

NEURONAL BUNGAROTOXIN

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NXL1_BUNMU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–66； UniProt 22–87 Author chain B； PDBConstruct 1–66； UniProt 22–87

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	2nbt
Deposition date deposition_date	1997-10-29
Structure title title	NEURONAL BUNGAROTOXIN, NMR, 10 STRUCTURES
Keywords keywords	TOXIN, VENOM, NEUROTOXIN; TOXIN
Experimental Method method	SOLUTION NMR

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

2nbt__assembly_1__model_6

Assembly 1 · Model 6 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2nbt__assembly_1__model_6 | I(q)

100 plotted points; both axes use logarithmic scales.

2nbt__assembly_1__model_6 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	16.33 Å
Rg (electron density)	15.26 Å
Total Rg	16.22 Å
Atom count	1956
Residues	132
Excluded volume	17604 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2nbt__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`2nbt__assembly_1__model_2`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`2nbt__assembly_1__model_3`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`2nbt__assembly_1__model_4`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`2nbt__assembly_1__model_5`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`2nbt__assembly_1__model_6`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`2nbt__assembly_1__model_7`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`2nbt__assembly_1__model_8`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`2nbt__assembly_1__model_9`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`2nbt__assembly_1__model_10`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (1)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2nbta_
Class class	g — Small proteins
Fold Fold fold	g.7 — Snake toxin-like
Superfamily Superfamily superfamily	g.7.1 — Snake toxin-like
Family Family family	g.7.1.1 — Snake venom toxins

Domain ID domain_id	d2nbtb_
Class class	g — Small proteins
Fold Fold fold	g.7 — Snake toxin-like
Superfamily Superfamily superfamily	g.7.1 — Snake toxin-like
Family Family family	g.7.1.1 — Snake venom toxins

CATH v4.4 (2 domains)

Domain ID domain_id	2nbtA00
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	60 — CD59
Homologous superfamily homologous superfamily	10 — CD59

Domain ID domain_id	2nbtB00
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	60 — CD59
Homologous superfamily homologous superfamily	10 — CD59

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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	NEURONAL BUNGAROTOXIN
Molecular weight formula_weight	7282.4 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	19560

NEURONAL BUNGAROTOXIN, NMR, 10 STRUCTURES

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

NEURONAL BUNGAROTOXIN

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

2nbt__assembly_1__model_6

2nbt__assembly_1__model_6 | I(q)

2nbt__assembly_1__model_6 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)

NEURONAL BUNGAROTOXIN, NMR, 10 STRUCTURES

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

NEURONAL BUNGAROTOXIN

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

2nbt__assembly_1__model_6

2nbt__assembly_1__model_6 | I(q)

2nbt__assembly_1__model_6 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)