2ijc

Structure of a Conserved Protein of Unknown Function PA0269 from Pseudomonas aeruginosa

Method: X-RAY DIFFRACTION

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

Hypothetical protein

Pseudomonas aeruginosa PAO1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count
2	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	Q9I6M1_PSEAE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–145； UniProt 1–145 Author chain B； PDBConstruct 1–145； UniProt 1–145 Author chain C； PDBConstruct 1–145； UniProt 1–145 Author chain D； PDBConstruct 1–145； UniProt 1–145 Author chain E； PDBConstruct 1–145； UniProt 1–145 Author chain F； PDBConstruct 1–145； UniProt 1–145 Author chain G； PDBConstruct 1–145； UniProt 1–145 Author chain H； PDBConstruct 1–145； UniProt 1–145 Author chain I； PDBConstruct 1–145； UniProt 1–145

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	2ijc
Deposition date deposition_date	2006-09-29
Structure title title	Structure of a Conserved Protein of Unknown Function PA0269 from Pseudomonas aeruginosa
Keywords keywords	;MCSG, structural genomics, hypothetical protein, PSI-2, Protein Structure Initiative, Midwest Center for Structural Genomics, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
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.

2ijc__assembly_2__model_1

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

Download this curve (.dat)

2ijc__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2ijc__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	28.52 Å
Rg (electron density)	27.63 Å
Total Rg	28.48 Å
Atom count	6720
Residues	832
Excluded volume	119510 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2ijc__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2ijc__assembly_2__model_1`	hexameric （6）	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) 18 domains

SCOP 2.08 (9 domains)

Domain ID domain_id	d2ijca1
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijcb_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijcc_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijcd_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijce_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijcf_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijcg_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijch_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

Domain ID domain_id	d2ijci_
Class class	a — All alpha proteins
Fold Fold fold	a.152 — AhpD-like
Superfamily Superfamily superfamily	a.152.1 — AhpD-like
Family Family family	a.152.1.3 — Atu0492-like

CATH v4.4 (9 domains)

Domain ID domain_id	2ijcA00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcB00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcC00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcD00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcE00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcF00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcG00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcH00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

Domain ID domain_id	2ijcI00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1290 — AhpD-like
Homologous superfamily homologous superfamily	10 — AhpD-like

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Unit-cell length a length_a	183.507 Å
Unit-cell length b length_b	76.719 Å
Unit-cell length c length_c	109.011 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	119.30 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	36

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

Resolution resolution	2.050 Å
Low-resolution limit resolution_low	34.590 Å
R factor r_factor	0.1935
R_work r_work	0.1902
R_free r_free	0.2534

Description description	Hypothetical protein
Molecular weight formula_weight	16455.0 kDa
Source method src_method	man
Copy count entity_count	9

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H,I
Atom count atom_count	10887

Structure of a Conserved Protein of Unknown Function PA0269 from Pseudomonas aeruginosa

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

Hypothetical protein

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

2ijc__assembly_2__model_1

2ijc__assembly_2__model_1 | I(q)

2ijc__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) 18 domains

SCOP 2.08 (9 domains)

CATH v4.4 (9 domains)

7. Citations (1)

Source organism organism	Pseudomonas aeruginosa PAO1
NCBI taxonomy ID ncbi_taxonomy_id	208964
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	833

Structure of a Conserved Protein of Unknown Function PA0269 from Pseudomonas aeruginosa

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

Hypothetical protein

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

2ijc__assembly_2__model_1

2ijc__assembly_2__model_1 | I(q)

2ijc__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) 18 domains

SCOP 2.08 (9 domains)

CATH v4.4 (9 domains)

7. Citations (1)