SAXSdb — 2iu4

▼

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

DIHYDROXYACETONE KINASE

LACTOCOCCUS LACTIS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 4 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9CIW0_LACLA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 14–328； UniProt 1–315 Author chain B； PDBConstruct 14–328； UniProt 1–315

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	2iu4
Deposition date deposition_date	2006-05-27
Structure title title	Dihydroxyacetone kinase operon co-activator Dha-DhaQ
Keywords keywords	TRANSFERASE, LACTOCOCCUS LACTIS, DIHYDROXYACETONE, CO-ACTIVATOR, KINASE; TRANSFERASE
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.

2iu4__assembly_1__model_1

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

Download this curve (.dat)

2iu4__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2iu4__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	25.52 Å
Rg (electron density)	24.33 Å
Total Rg	25.24 Å
Atom count	5145
Residues	654
Excluded volume	92273 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2iu4__assembly_1__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 (3)

Entity 1 Entity 1 polymer

Description description	DIHYDROXYACETONE KINASE
Molecular weight formula_weight	37436.7 kDa
EC 编号 ec_number	2.7.1.2
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	5483

MEFYNSTNEIPEEMLKGIDLTYPQLTYLPETGILYDNTYNEKTVPIISGGGSGHEPAHVGYVGSGMLAAAVTGPLFIPPKSKNILKAIRQVNSGKGVFVIIKNFEADLKEFNEAIKEARTEGIDVRYIVSHDDISVNAYNFHKRHRGVAGTILLHKILGAFAKEGGSIDEIEQLALSLSPEIYTLGVALAPVHFPHQKTSFVLAEDEVSFGIGIHGEPGYRVEKFEGSERIAIELVNKLKAEINWQKKANKNYILLVNGLGSTTLMELYSFQYDVMRLLELEGLSVKFCKVGNLMTSCDMSGISLTLCSVKDPKWLDYLNVPTGAFAWLEHHHHHH

Source Source

Source organism organism	LACTOCOCCUS LACTIS
Common name common_name	IL1403
NCBI taxonomy ID ncbi_taxonomy_id	1358
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	338

▼

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2iu4a1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.119 — DAK1/DegV-like
Superfamily Superfamily superfamily	c.119.1 — DAK1/DegV-like
Family Family family	c.119.1.0 — automated matches

Domain ID domain_id	d2iu4a2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2iu4b1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.119 — DAK1/DegV-like
Superfamily Superfamily superfamily	c.119.1 — DAK1/DegV-like
Family Family family	c.119.1.0 — automated matches

Domain ID domain_id	d2iu4b2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (4 domains)

Domain ID domain_id	2iu4A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10440 — Dihydroxyacetone kinase; domain 1

Domain ID domain_id	2iu4A02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1180 — Hypothetical Protein Tm841; Chain: A;domain 3
Homologous superfamily homologous superfamily	20 — Dihydroxyacetone kinase; domain 2

Domain ID domain_id	2iu4B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10440 — Dihydroxyacetone kinase; domain 1

Domain ID domain_id	2iu4B02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1180 — Hypothetical Protein Tm841; Chain: A;domain 3
Homologous superfamily homologous superfamily	20 — Dihydroxyacetone kinase; domain 2

▶

Unit-cell length a length_a	99.897 Å
Unit-cell length b length_b	99.897 Å
Unit-cell length c length_c	188.566 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	12

Space group space_group	P 31 2 1
Space-group number int_tables_number	152
Crystal system crystal_system	—

Resolution resolution	1.960 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1820
R_work r_work	0.1810
R_free r_free	0.2090

Dihydroxyacetone kinase operon co-activator Dha-DhaQ

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

DIHYDROXYACETONE KINASE

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

2iu4__assembly_1__model_1

2iu4__assembly_1__model_1 | I(q)

2iu4__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 (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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Dihydroxyacetone kinase operon co-activator Dha-DhaQ

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

DIHYDROXYACETONE KINASE

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

2iu4__assembly_1__model_1

2iu4__assembly_1__model_1 | I(q)

2iu4__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 (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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)