SAXSdb — 3cg7

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

Cell death-related nuclease 4

Caenorhabditis elegans

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CRN4_CAEEL
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 11–308； UniProt 1–298 Author chain B； PDBConstruct 11–308； UniProt 1–298

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	3cg7
Deposition date deposition_date	2008-03-05
Structure title title	Crystal structure of cell-death related nuclease 4 (CRN-4)
Keywords keywords	;HYDROLASE, APOPTOSIS, 3'-5' exonuclease, DEDDh, nuclease ;; HYDROLASE, 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.

3cg7__assembly_1__model_1

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

Download this curve (.dat)

3cg7__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3cg7__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.99 Å
Rg (electron density)	29.40 Å
Total Rg	30.18 Å
Atom count	4824
Residues	591
Excluded volume	85901 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3cg7__assembly_1__model_1`	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 (3)

Entity 1 Entity 1 polymer

Description description	Cell death-related nuclease 4
Molecular weight formula_weight	35592.6 kDa
EC 编号 ec_number	3.1.-.-
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4997

GSPGIPGSTRMAYQHCPFDTLLILDFETTSDAANQDYPCEVIQFAIVAYDVPNDKIREDISFNKYVKPVLNRTLTKNCVDFTGIPQRSIDTADTFDVVYEQFQQWLITLGLEEGKFAFVCDSRQDLWRIAQYQMKLSNIQMPAFFRQYINLYKIFTNEMDRMGPKELSATTNIGKMNEYYDLPTIGRAHDAMDDCLNIATILQRMINMGAKVTVNELLTCCASWRRQPLVYNKEWRSSFMDAGKIFERVLPLVVTTIRAGDFRLEMYGVCRYCRKGMDVCGTSHQQTPHDLYKNEEDPIHFAKIAGYY

Source Source

Source organism organism	Caenorhabditis elegans
NCBI taxonomy ID ncbi_taxonomy_id	6239
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	173

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3cg7A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	10 — Ribonuclease H-like superfamily/Ribonuclease H

Domain ID domain_id	3cg7B01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	10 — Ribonuclease H-like superfamily/Ribonuclease H

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Unit-cell length a length_a	126.474 Å
Unit-cell length b length_b	165.379 Å
Unit-cell length c length_c	64.263 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	8

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.2082
R_work r_work	0.2061
R_free r_free	0.2468

Crystal structure of cell-death related nuclease 4 (CRN-4)

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

Cell death-related nuclease 4

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

3cg7__assembly_1__model_1

3cg7__assembly_1__model_1 | I(q)

3cg7__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of cell-death related nuclease 4 (CRN-4)

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

Cell death-related nuclease 4

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

3cg7__assembly_1__model_1

3cg7__assembly_1__model_1 | I(q)

3cg7__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)