SAXSdb — 1ujn

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

dehydroquinate synthase

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	P83703_THETH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–348； UniProt 1–348 Author chain B； PDBConstruct 1–348； UniProt 1–348

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	1ujn
Deposition date deposition_date	2003-08-06
Structure title title	Crystal structure of dehydroquinate synthase from Thermus thermophilus HB8
Keywords keywords	dehydroquinate synthase, Thermus thermophilus, RIKEN Structural Genomics/Proteomics Initiative, RSGI, Structural Genomics, LYASE; LYASE
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.

1ujn__assembly_1__model_1

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

Download this curve (.dat)

1ujn__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ujn__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.92 Å
Rg (electron density)	29.44 Å
Total Rg	30.17 Å
Atom count	5120
Residues	674
Excluded volume	93128 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ujn__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) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1ujna_
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.22 — Dehydroquinate synthase-like
Superfamily Superfamily superfamily	e.22.1 — Dehydroquinate synthase-like
Family Family family	e.22.1.1 — Dehydroquinate synthase, DHQS

Domain ID domain_id	d1ujnb_
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.22 — Dehydroquinate synthase-like
Superfamily Superfamily superfamily	e.22.1 — Dehydroquinate synthase-like
Family Family family	e.22.1.1 — Dehydroquinate synthase, DHQS

CATH v4.4 (4 domains)

Domain ID domain_id	1ujnA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1970 —

Domain ID domain_id	1ujnA02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1090 — Dehydroquinate synthase-like, alpha domain
Homologous superfamily homologous superfamily	10 — Dehydroquinate synthase-like - alpha domain

Domain ID domain_id	1ujnB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1970 —

Domain ID domain_id	1ujnB02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1090 — Dehydroquinate synthase-like, alpha domain
Homologous superfamily homologous superfamily	10 — Dehydroquinate synthase-like - alpha domain

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Unit-cell length a length_a	63.403 Å
Unit-cell length b length_b	71.787 Å
Unit-cell length c length_c	71.636 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	99.44 °
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	1.800 Å
Low-resolution limit resolution_low	37.200 Å
R factor r_factor	0.2030
R_work r_work	0.2020
R_free r_free	0.2360

Description description	dehydroquinate synthase
Molecular weight formula_weight	37559.0 kDa
EC 编号 ec_number	4.2.3.4
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	5765

Crystal structure of dehydroquinate synthase from Thermus thermophilus HB8

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

dehydroquinate synthase

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

1ujn__assembly_1__model_1

1ujn__assembly_1__model_1 | I(q)

1ujn__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) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 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	645

Crystal structure of dehydroquinate synthase from Thermus thermophilus HB8

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

dehydroquinate synthase

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

1ujn__assembly_1__model_1

1ujn__assembly_1__model_1 | I(q)

1ujn__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) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)