SAXSdb — 2dbs

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

hypothetical protein TTHC002

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	Q5SGN2_THET8
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–90； UniProt 1–90 Author chain B； PDBConstruct 1–90； UniProt 1–90

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	2dbs
Deposition date deposition_date	2005-12-16
Structure title title	Crystal structure of a hypothetical protein TTHC002 from Thermus thermophilus HB8
Keywords keywords	;hypothetical protein, TT2175, TTHC002, extremely thermophilic bacteria, Structural Genomics, NPPSFA, National Project on Protein Structural and Functional Analyses, RIKEN Structural Genomics/Proteomics Initiative, RSGI, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
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.

2dbs__assembly_1__model_1

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

Download this curve (.dat)

2dbs__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2dbs__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.87 Å
Rg (electron density)	15.29 Å
Total Rg	16.47 Å
Atom count	1280
Residues	158
Excluded volume	23374 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2dbs__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

SCOP 2.08 (2 domains)

Domain ID domain_id	d2dbsa1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.374 — TTHC002-like
Superfamily Superfamily superfamily	d.374.1 — TTHC002-like
Family Family family	d.374.1.1 — TTHC002-like

Domain ID domain_id	d2dbsb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.374 — TTHC002-like
Superfamily Superfamily superfamily	d.374.1 — TTHC002-like
Family Family family	d.374.1.1 — TTHC002-like

CATH v4.4 (2 domains)

Domain ID domain_id	2dbsA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1350 — Trna Endonuclease; Chain: A, domain 1
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	2dbsB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1350 — Trna Endonuclease; Chain: A, domain 1
Homologous superfamily homologous superfamily	20 —

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Unit-cell length a length_a	41.145 Å
Unit-cell length b length_b	41.145 Å
Unit-cell length c length_c	87.572 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 31
Space-group number int_tables_number	144
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	36.000 Å
R factor r_factor	—
R_work r_work	0.2561
R_free r_free	0.2712

Description description	hypothetical protein TTHC002
Molecular weight formula_weight	10151.4 kDa
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	1299

Crystal structure of a hypothetical protein TTHC002 from Thermus thermophilus HB8

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

hypothetical protein TTHC002

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

2dbs__assembly_1__model_1

2dbs__assembly_1__model_1 | I(q)

2dbs__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	Thermus thermophilus
NCBI taxonomy ID ncbi_taxonomy_id	300852
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	19

Crystal structure of a hypothetical protein TTHC002 from Thermus thermophilus HB8

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

hypothetical protein TTHC002

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

2dbs__assembly_1__model_1

2dbs__assembly_1__model_1 | I(q)

2dbs__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)