1t72

Crystal structure of phosphate transport system protein phoU from Aquifex aeolicus

Method: X-RAY DIFFRACTION

▼

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

Phosphate transport system protein phoU homolog

Aquifex aeolicus

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
2	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PHOU_AQUAE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 7–227； UniProt 1–221 Author chain B； PDBConstruct 7–227； UniProt 1–221 Author chain D； PDBConstruct 7–227； UniProt 1–221 Author chain E； PDBConstruct 7–227； UniProt 1–221 Author chain F； PDBConstruct 7–227； UniProt 1–221 Author chain G； PDBConstruct 7–227； UniProt 1–221

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	1t72
Deposition date deposition_date	2004-05-07
Structure title title	Crystal structure of phosphate transport system protein phoU from Aquifex aeolicus
Keywords keywords	;helix bundle, Structural Genomics, BSGC structure funded by NIH, Protein Structure Initiative, PSI, Berkeley Structural Genomics Center, TRANSPORT PROTEIN ;; TRANSPORT PROTEIN
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.

1t72__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1t72__assembly_3__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1t72__assembly_3__model_1 | P(r) · Pending

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

Rg（Guinier）	23.03 Å
Rg (electron density)	22.36 Å
Total Rg	23.26 Å
Atom count	3399
Residues	405
Excluded volume	61149 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1t72__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1t72__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1t72__assembly_3__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`1t72__assembly_4__model_1`	hexameric （6）	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) 24 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d1t72a1
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.12 — PhoU-like
Family Family family	a.7.12.1 — PhoU-like

Domain ID domain_id	d1t72a2
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	d1t72b1
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.12 — PhoU-like
Family Family family	a.7.12.1 — PhoU-like

Domain ID domain_id	d1t72b2
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	d1t72d1
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.12 — PhoU-like
Family Family family	a.7.12.1 — PhoU-like

Domain ID domain_id	d1t72d2
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	d1t72e1
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.12 — PhoU-like
Family Family family	a.7.12.1 — PhoU-like

Domain ID domain_id	d1t72e2
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	d1t72f1
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.12 — PhoU-like
Family Family family	a.7.12.1 — PhoU-like

Domain ID domain_id	d1t72f2
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	d1t72g1
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.12 — PhoU-like
Family Family family	a.7.12.1 — PhoU-like

Domain ID domain_id	d1t72g2
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 (12 domains)

Domain ID domain_id	1t72A01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72A02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72B01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72B02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72D01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72D02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72E01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72E02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72F01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72F02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72G01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	1t72G02
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

▶

Unit-cell length a length_a	113.500 Å
Unit-cell length b length_b	113.500 Å
Unit-cell length c length_c	155.000 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	24

Space group space_group	P 43
Space-group number int_tables_number	78
Crystal system crystal_system	—

Resolution resolution	2.900 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	0.2164
R_work r_work	0.2008
R_free r_free	0.2927

Description description	Phosphate transport system protein phoU homolog
Molecular weight formula_weight	26413.7 kDa
Source method src_method	man
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,D,E,F,G
Atom count atom_count	10391

Crystal structure of phosphate transport system protein phoU from Aquifex aeolicus

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

Phosphate transport system protein phoU homolog

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

1t72__assembly_3__model_1

1t72__assembly_3__model_1 | I(q)

1t72__assembly_3__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) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. Citations (1)

Source organism organism	Aquifex aeolicus
NCBI taxonomy ID ncbi_taxonomy_id	63363
Host organism host_organism	Escherichia coli K12

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	161

Crystal structure of phosphate transport system protein phoU from Aquifex aeolicus

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

Phosphate transport system protein phoU homolog

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

1t72__assembly_3__model_1

1t72__assembly_3__model_1 | I(q)

1t72__assembly_3__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) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. Citations (1)