SAXSdb — 1gwy

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

STICHOLYSIN II

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	SULFATE ION × 3 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	SULFATE ION × 5 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CYT2_STOHE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–175； UniProt 1–175 Author chain B； PDBConstruct 1–175； UniProt 1–175

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	1gwy
Deposition date deposition_date	2002-03-26
Structure title title	Crystal structure of the water-soluble state of the pore-forming cytolysin Sticholysin II
Keywords keywords	CYTOLYSIN, PORE-FORMING TOXIN, HEMOLYSIS, CNIDOCYST; CYTOLYSIN
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.

1gwy__assembly_1__model_1

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

Download this curve (.dat)

1gwy__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1gwy__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.35 Å
Rg (electron density)	14.99 Å
Total Rg	16.10 Å
Atom count	1376
Residues	175
Excluded volume	24397 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1gwy__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1gwy__assembly_2__model_1`	monomeric （1）	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 (3)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1gwya_
Class class	b — All beta proteins
Fold Fold fold	b.97 — Cytolysin/lectin
Superfamily Superfamily superfamily	b.97.1 — Cytolysin/lectin
Family Family family	b.97.1.1 — Anemone pore-forming cytolysin

Domain ID domain_id	d1gwyb_
Class class	b — All beta proteins
Fold Fold fold	b.97 — Cytolysin/lectin
Superfamily Superfamily superfamily	b.97.1 — Cytolysin/lectin
Family Family family	b.97.1.1 — Anemone pore-forming cytolysin

CATH v4.4 (2 domains)

Domain ID domain_id	1gwyA00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	270 — Mutm (Fpg) Protein; Chain: A, domain 2
Homologous superfamily homologous superfamily	20 — Cytolysin/lectin

Domain ID domain_id	1gwyB00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	270 — Mutm (Fpg) Protein; Chain: A, domain 2
Homologous superfamily homologous superfamily	20 — Cytolysin/lectin

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Unit-cell length a length_a	32.304 Å
Unit-cell length b length_b	119.735 Å
Unit-cell length c length_c	43.421 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.04 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

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

Resolution resolution	1.710 Å
Low-resolution limit resolution_low	9.990 Å
R factor r_factor	0.2160
R_work r_work	0.2160
R_free r_free	0.2560

Description description	STICHOLYSIN II
Molecular weight formula_weight	19302.8 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	3135

Crystal structure of the water-soluble state of the pore-forming cytolysin Sticholysin II

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

STICHOLYSIN II

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

1gwy__assembly_1__model_1

1gwy__assembly_1__model_1 | I(q)

1gwy__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	8

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	373

Crystal structure of the water-soluble state of the pore-forming cytolysin Sticholysin II

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

STICHOLYSIN II

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

1gwy__assembly_1__model_1

1gwy__assembly_1__model_1 | I(q)

1gwy__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)