SAXSdb — 2q19

▼

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

2-keto-3-deoxy-D-arabinonate dehydratase

Sulfolobus solfataricus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	water × 4	Consistent with protein count
2	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	Q97UA0_SULSO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain X； PDBConstruct 1–293； UniProt 6–298

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	2q19
Deposition date deposition_date	2007-05-24
Structure title title	2-keto-3-deoxy-D-arabinonate dehydratase apo form
Keywords keywords	FAH-family fold, Lyase; LYASE
Experimental Method method	X-RAY DIFFRACTION

▼

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.

2q19__assembly_1__model_1

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

Download this curve (.dat)

2q19__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2q19__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	37.22 Å
Rg (electron density)	36.65 Å
Total Rg	37.19 Å
Atom count	8944
Residues	1128
Excluded volume	161130 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2q19__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2q19__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (2)

▼

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	2q19X01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	330 — Vcp-like ATPase; Chain A, domain 2
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	2q19X02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	850 — Fumarylacetoacetate hydrolase; domain 2
Homologous superfamily homologous superfamily	10 — Fumarylacetoacetase-like, C-terminal domain

▶

Unit-cell length a length_a	128.930 Å
Unit-cell length b length_b	128.930 Å
Unit-cell length c length_c	225.090 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	16

Space group space_group	I 41 2 2
Space-group number int_tables_number	98
Crystal system crystal_system	—

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	14.960 Å
R factor r_factor	0.2159
R_work r_work	0.2145
R_free r_free	0.2432

Description description	2-keto-3-deoxy-D-arabinonate dehydratase
Molecular weight formula_weight	33185.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	X
Atom count atom_count	2309

2-keto-3-deoxy-D-arabinonate dehydratase apo form

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

2-keto-3-deoxy-D-arabinonate dehydratase

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

2q19__assembly_1__model_1

2q19__assembly_1__model_1 | I(q)

2q19__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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Sulfolobus solfataricus
NCBI taxonomy ID ncbi_taxonomy_id	273057
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	73

2-keto-3-deoxy-D-arabinonate dehydratase apo form

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

2-keto-3-deoxy-D-arabinonate dehydratase

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

2q19__assembly_1__model_1

2q19__assembly_1__model_1 | I(q)

2q19__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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)