SAXSdb — 3eoq

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

Putative zinc protease

Thermus thermophilus

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q5SIV0_THET8
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–406； UniProt 1–406 Author chain B； PDBConstruct 1–406； UniProt 1–406

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	3eoq
Deposition date deposition_date	2008-09-29
Structure title title	The crystal structure of putative zinc protease beta-subunit from Thermus thermophilus HB8
Keywords keywords	two similar domains of beta(2)-alpha(2)-beta(2)-alpha(5)-beta structure, Protease, HYDROLASE; HYDROLASE
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.

3eoq__assembly_1__model_1

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

Download this curve (.dat)

3eoq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3eoq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	30.14 Å
Rg (electron density)	28.89 Å
Total Rg	29.74 Å
Atom count	6435
Residues	793
Excluded volume	114400 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3eoq__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	3eoqA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

Domain ID domain_id	3eoqA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

Domain ID domain_id	3eoqB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

Domain ID domain_id	3eoqB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

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Unit-cell length a length_a	70.340 Å
Unit-cell length b length_b	94.202 Å
Unit-cell length c length_c	134.454 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 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.290 Å
Low-resolution limit resolution_low	48.620 Å
R factor r_factor	0.1900
R_work r_work	0.1870
R_free r_free	0.2370

Description description	Putative zinc protease
Molecular weight formula_weight	46058.8 kDa
EC 编号 ec_number	3.4.24.56
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	6739

The crystal structure of putative zinc protease beta-subunit from Thermus thermophilus HB8

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

Putative zinc protease

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

3eoq__assembly_1__model_1

3eoq__assembly_1__model_1 | I(q)

3eoq__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

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Thermus thermophilus
NCBI taxonomy ID ncbi_taxonomy_id	274
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	304

The crystal structure of putative zinc protease beta-subunit from Thermus thermophilus HB8

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

Putative zinc protease

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

3eoq__assembly_1__model_1

3eoq__assembly_1__model_1 | I(q)

3eoq__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

CATH v4.4 (4 domains)

7. Citations (1)