SAXSdb — 2ipb

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

Class A nonspecific acid phosphatase PhoN

Salmonella typhimurium

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q71EB8_SALTY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–230； UniProt 21–250 Author chain B； PDBConstruct 1–230； UniProt 21–250 Author chain C； PDBConstruct 1–230； UniProt 21–250 Author chain D； PDBConstruct 1–230； UniProt 21–250

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	2ipb
Deposition date deposition_date	2006-10-12
Structure title title	Crystal structure of T159D mutant of S. Typhimurium PhoN protein
Keywords keywords	Class-A bacterial non-specific acid phosphatase, T159D mutant of the PhoN protein, HYDROLASE; HYDROLASE
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.

2ipb__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2ipb__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2ipb__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	22.31 Å
Rg (electron density)	21.34 Å
Total Rg	22.30 Å
Atom count	3502
Residues	438
Excluded volume	61674 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2ipb__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2ipb__assembly_2__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

CATH v4.4 (4 domains)

Domain ID domain_id	2ipbA00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	144 — Vanadium-containing Chloroperoxidase; domain 1
Homologous superfamily homologous superfamily	10 — Phosphatidic acid phosphatase type 2/haloperoxidase

Domain ID domain_id	2ipbB00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	144 — Vanadium-containing Chloroperoxidase; domain 1
Homologous superfamily homologous superfamily	10 — Phosphatidic acid phosphatase type 2/haloperoxidase

Domain ID domain_id	2ipbC00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	144 — Vanadium-containing Chloroperoxidase; domain 1
Homologous superfamily homologous superfamily	10 — Phosphatidic acid phosphatase type 2/haloperoxidase

Domain ID domain_id	2ipbD00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	144 — Vanadium-containing Chloroperoxidase; domain 1
Homologous superfamily homologous superfamily	10 — Phosphatidic acid phosphatase type 2/haloperoxidase

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Unit-cell length a length_a	190.273 Å
Unit-cell length b length_b	45.113 Å
Unit-cell length c length_c	112.945 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	112.05 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.230 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.1540
R_work r_work	0.1510
R_free r_free	0.2080

Description description	Class A nonspecific acid phosphatase PhoN
Molecular weight formula_weight	26163.3 kDa
EC 编号 ec_number	3.1.3.2
Mutation mutation	T159D
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	7305

Crystal structure of T159D mutant of S. Typhimurium PhoN protein

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

Class A nonspecific acid phosphatase PhoN

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

2ipb__assembly_2__model_1

2ipb__assembly_2__model_1 | I(q)

2ipb__assembly_2__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

CATH v4.4 (4 domains)

7. Citations (3)

Source organism organism	Salmonella typhimurium
NCBI taxonomy ID ncbi_taxonomy_id	602
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	293

Crystal structure of T159D mutant of S. Typhimurium PhoN protein

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

Class A nonspecific acid phosphatase PhoN

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

2ipb__assembly_2__model_1

2ipb__assembly_2__model_1 | I(q)

2ipb__assembly_2__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

CATH v4.4 (4 domains)

7. Citations (3)