SAXSdb — 1o9y

▼

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

HRCQ2

PSEUDOMONAS SYRINGAE

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O85094
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 6–84； UniProt 50–128 Author chain B； PDBConstruct 6–84； UniProt 50–128 Author chain C； PDBConstruct 6–84； UniProt 50–128 Author chain D； PDBConstruct 6–84； UniProt 50–128

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	1o9y
Deposition date deposition_date	2002-12-20
Structure title title	Crystal structure of the C-terminal domain of the HrcQb protein from Pseudomonas syringae pv. phaseolicola
Keywords keywords	SECRETORY PROTEIN, HRP, TYPE III SECRETION SYSTEM, PHYTOPATHOGENICITY, STRUCTURAL PROTEIN; STRUCTURAL 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.

1o9y__assembly_1__model_1

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

Download this curve (.dat)

1o9y__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1o9y__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.19 Å
Rg (electron density)	24.12 Å
Total Rg	24.68 Å
Atom count	2056
Residues	286
Excluded volume	36931 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1o9y__assembly_1__model_1`	tetrameric （4）	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) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1o9ya_
Class class	b — All beta proteins
Fold Fold fold	b.139 — Surface presentation of antigens (SPOA)
Superfamily Superfamily superfamily	b.139.1 — Surface presentation of antigens (SPOA)
Family Family family	b.139.1.1 — Surface presentation of antigens (SPOA)

Domain ID domain_id	d1o9yb_
Class class	b — All beta proteins
Fold Fold fold	b.139 — Surface presentation of antigens (SPOA)
Superfamily Superfamily superfamily	b.139.1 — Surface presentation of antigens (SPOA)
Family Family family	b.139.1.1 — Surface presentation of antigens (SPOA)

Domain ID domain_id	d1o9yc_
Class class	b — All beta proteins
Fold Fold fold	b.139 — Surface presentation of antigens (SPOA)
Superfamily Superfamily superfamily	b.139.1 — Surface presentation of antigens (SPOA)
Family Family family	b.139.1.1 — Surface presentation of antigens (SPOA)

Domain ID domain_id	d1o9yd_
Class class	b — All beta proteins
Fold Fold fold	b.139 — Surface presentation of antigens (SPOA)
Superfamily Superfamily superfamily	b.139.1 — Surface presentation of antigens (SPOA)
Family Family family	b.139.1.1 — Surface presentation of antigens (SPOA)

CATH v4.4 (4 domains)

Domain ID domain_id	1o9yA00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	330 — Surface presentation of antigens (SPOA)
Homologous superfamily homologous superfamily	10 — SpoA-like

Domain ID domain_id	1o9yB00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	330 — Surface presentation of antigens (SPOA)
Homologous superfamily homologous superfamily	10 — SpoA-like

Domain ID domain_id	1o9yC00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	330 — Surface presentation of antigens (SPOA)
Homologous superfamily homologous superfamily	10 — SpoA-like

Domain ID domain_id	1o9yD00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	330 — Surface presentation of antigens (SPOA)
Homologous superfamily homologous superfamily	10 — SpoA-like

▶

Unit-cell length a length_a	53.018 Å
Unit-cell length b length_b	27.696 Å
Unit-cell length c length_c	98.850 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	99.68 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.290 Å
Low-resolution limit resolution_low	39.000 Å
R factor r_factor	0.1847
R_work r_work	0.1823
R_free r_free	0.2283

Description description	HRCQ2
Molecular weight formula_weight	8953.2 kDa
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	2209

Crystal structure of the C-terminal domain of the HrcQb protein from Pseudomonas syringae pv. phaseolicola

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

HRCQ2

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

1o9y__assembly_1__model_1

1o9y__assembly_1__model_1 | I(q)

1o9y__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)

Source organism organism	PSEUDOMONAS SYRINGAE
NCBI taxonomy ID ncbi_taxonomy_id	317
Host organism host_organism	Escherichia coli DH5[alpha]

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	153

Crystal structure of the C-terminal domain of the HrcQb protein from Pseudomonas syringae pv. phaseolicola

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

HRCQ2

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

1o9y__assembly_1__model_1

1o9y__assembly_1__model_1 | I(q)

1o9y__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)