2cb4

Crystal structure of the catalytic domain of the mosquitocidal toxin from Bacillus sphaericus, mutant E197Q

Method: X-RAY DIFFRACTION

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

MOSQUITOCIDAL TOXIN

BACILLUS SPHAERICUS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 7	water × 7	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 7	water × 7	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q03988_BACSH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 13–291； UniProt 30–308 Author chain B； PDBConstruct 13–291； UniProt 30–308 Author chain C； PDBConstruct 13–291； UniProt 30–308 Author chain D； PDBConstruct 13–291； UniProt 30–308 Author chain E； PDBConstruct 13–291； UniProt 30–308 Author chain F； PDBConstruct 13–291； UniProt 30–308 Author chain G； PDBConstruct 13–291； UniProt 30–308 Author chain H； PDBConstruct 13–291； UniProt 30–308 Author chain I； PDBConstruct 13–291； UniProt 30–308 Author chain J； PDBConstruct 13–291； UniProt 30–308 Author chain K； PDBConstruct 13–291； UniProt 30–308 Author chain L； PDBConstruct 13–291； UniProt 30–308 Author chain M； PDBConstruct 13–291； UniProt 30–308 Author chain N； PDBConstruct 13–291； UniProt 30–308

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	2cb4
Deposition date deposition_date	2005-12-29
Structure title title	Crystal structure of the catalytic domain of the mosquitocidal toxin from Bacillus sphaericus, mutant E197Q
Keywords keywords	TOXIN, ADP-RIBOSYLTRANSFERASE; TOXIN
Experimental Method method	X-RAY DIFFRACTION

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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.

2cb4__assembly_1__model_1

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

Download this curve (.dat)

2cb4__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2cb4__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	44.25 Å
Rg (electron density)	43.38 Å
Total Rg	43.68 Å
Atom count	14665
Residues	1771
Excluded volume	256230 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2cb4__assembly_1__model_1`	heptameric （7）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2cb4__assembly_2__model_1`	heptameric （7）	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 (2)

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6. Fold Classification (SCOP + CATH) 14 domains

CATH v4.4 (14 domains)

Domain ID domain_id	2cb4A00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4B00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4C00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4D00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4E00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4F00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4G00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4H00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4I00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4J00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4K00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4L00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4M00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

Domain ID domain_id	2cb4N00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	210 — Heat-Labile Enterotoxin; Chain A
Homologous superfamily homologous superfamily	10 — Heat-Labile Enterotoxin, subunit A

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Unit-cell length a length_a	123.710 Å
Unit-cell length b length_b	143.267 Å
Unit-cell length c length_c	135.814 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	100.58 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	28

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.1744
R_work r_work	0.1744
R_free r_free	0.1938

Description description	MOSQUITOCIDAL TOXIN
Molecular weight formula_weight	33153.7 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	14

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H,I,J,K,L,M,N
Atom count atom_count	30680

Crystal structure of the catalytic domain of the mosquitocidal toxin from Bacillus sphaericus, mutant E197Q

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

MOSQUITOCIDAL TOXIN

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

2cb4__assembly_1__model_1

2cb4__assembly_1__model_1 | I(q)

2cb4__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 14 domains

CATH v4.4 (14 domains)

7. Citations (1)

Source organism organism	BACILLUS SPHAERICUS
NCBI taxonomy ID ncbi_taxonomy_id	1421
Host organism host_organism	ESCHERICHIA COLI

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	1350

Crystal structure of the catalytic domain of the mosquitocidal toxin from Bacillus sphaericus, mutant E197Q

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

MOSQUITOCIDAL TOXIN

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

2cb4__assembly_1__model_1

2cb4__assembly_1__model_1 | I(q)

2cb4__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 14 domains

CATH v4.4 (14 domains)

7. Citations (1)