SAXSdb — 1ohu

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

APOPTOSIS REGULATOR CED-9

CAENORHABDITIS ELEGANS

UniProt P41958

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CED9_CAEEL
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–175； UniProt 68–242 Author chain B； PDBConstruct 1–175； UniProt 68–242

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	1ohu
Deposition date deposition_date	2003-05-31
Structure title title	Structure of Caenorhabditis elegans CED-9
Keywords keywords	APOPTOSIS, CED-9, BCL-2 FAMILY; APOPTOSIS
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.

1ohu__assembly_1__model_1

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

Download this curve (.dat)

1ohu__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ohu__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.42 Å
Rg (electron density)	15.10 Å
Total Rg	16.09 Å
Atom count	1312
Residues	157
Excluded volume	23366 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ohu__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1ohu__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1ohua_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.1 — Toxins' membrane translocation domains
Superfamily Superfamily superfamily	f.1.4 — Bcl-2 inhibitors of programmed cell death
Family Family family	f.1.4.1 — Bcl-2 inhibitors of programmed cell death

Domain ID domain_id	d1ohub_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.1 — Toxins' membrane translocation domains
Superfamily Superfamily superfamily	f.1.4 — Bcl-2 inhibitors of programmed cell death
Family Family family	f.1.4.1 — Bcl-2 inhibitors of programmed cell death

CATH v4.4 (2 domains)

Domain ID domain_id	1ohuA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	437 — Apoptosis Regulator Bcl-x
Homologous superfamily homologous superfamily	10 — Blc2-like

Domain ID domain_id	1ohuB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	437 — Apoptosis Regulator Bcl-x
Homologous superfamily homologous superfamily	10 — Blc2-like

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Unit-cell length a length_a	46.790 Å
Unit-cell length b length_b	92.050 Å
Unit-cell length c length_c	47.640 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	99.78 °
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	2.030 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.2120
R_work r_work	0.2120
R_free r_free	0.2480

Description description	APOPTOSIS REGULATOR CED-9
Molecular weight formula_weight	20813.2 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2718

Structure of Caenorhabditis elegans CED-9

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

APOPTOSIS REGULATOR CED-9

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

1ohu__assembly_1__model_1

1ohu__assembly_1__model_1 | I(q)

1ohu__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	CAENORHABDITIS ELEGANS
NCBI taxonomy ID ncbi_taxonomy_id	6239
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	61

Structure of Caenorhabditis elegans CED-9

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

APOPTOSIS REGULATOR CED-9

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

1ohu__assembly_1__model_1

1ohu__assembly_1__model_1 | I(q)

1ohu__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)