SAXSdb — 4xx2

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

Organic hydroperoxide resistance protein

Xylella fastidiosa (strain 9a5c)

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	Q9PCF4_XYLFA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 21–163； UniProt 1–143 Author chain B； PDBConstruct 21–163； UniProt 1–143 Author chain C； PDBConstruct 21–163； UniProt 1–143

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	4xx2
Deposition date deposition_date	2015-01-29
Structure title title	Ohr from Xylella fastidiosa in oxidized state
Keywords keywords	Organic hydroperoxide, Ohr, Xylella fastidiosa, oxidized, disulfide, OXIDOREDUCTASE; OXIDOREDUCTASE
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.

4xx2__assembly_1__model_1

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

Download this curve (.dat)

4xx2__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4xx2__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	19.10 Å
Rg (electron density)	17.93 Å
Total Rg	18.99 Å
Atom count	2034
Residues	282
Excluded volume	36500 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4xx2__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4xx2__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) 9 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d4xx2a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.227 — OsmC-like
Superfamily Superfamily superfamily	d.227.1 — OsmC-like
Family Family family	d.227.1.1 — Ohr/OsmC resistance proteins

Domain ID domain_id	d4xx2b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.227 — OsmC-like
Superfamily Superfamily superfamily	d.227.1 — OsmC-like
Family Family family	d.227.1.1 — Ohr/OsmC resistance proteins

Domain ID domain_id	d4xx2c_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.227 — OsmC-like
Superfamily Superfamily superfamily	d.227.1 — OsmC-like
Family Family family	d.227.1.1 — Ohr/OsmC resistance proteins

CATH v4.4 (6 domains)

Domain ID domain_id	4xx2A01
Class class	2 — Mainly Beta
Architecture architecture	20 — Single Sheet
Topology topology	25 — N-terminal domain of TfIIb
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	4xx2A02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	300 — GMP Synthetase; Chain A, domain 3
Homologous superfamily homologous superfamily	20 — K homology (KH) domain

Domain ID domain_id	4xx2B01
Class class	2 — Mainly Beta
Architecture architecture	20 — Single Sheet
Topology topology	25 — N-terminal domain of TfIIb
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	4xx2B02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	300 — GMP Synthetase; Chain A, domain 3
Homologous superfamily homologous superfamily	20 — K homology (KH) domain

Domain ID domain_id	4xx2C01
Class class	2 — Mainly Beta
Architecture architecture	20 — Single Sheet
Topology topology	25 — N-terminal domain of TfIIb
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	4xx2C02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	300 — GMP Synthetase; Chain A, domain 3
Homologous superfamily homologous superfamily	20 — K homology (KH) domain

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Unit-cell length a length_a	87.813 Å
Unit-cell length b length_b	83.693 Å
Unit-cell length c length_c	60.766 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	93.67 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	12

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

Resolution resolution	2.150 Å
Low-resolution limit resolution_low	60.630 Å
R factor r_factor	0.1791
R_work r_work	0.1764
R_free r_free	0.2264

Description description	Organic hydroperoxide resistance protein
Molecular weight formula_weight	17084.5 kDa
EC 编号 ec_number	1.-.-.-
Source method src_method	man
Copy count entity_count	3

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	3391

Ohr from Xylella fastidiosa in oxidized state

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

Organic hydroperoxide resistance 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

4xx2__assembly_1__model_1

4xx2__assembly_1__model_1 | I(q)

4xx2__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) 9 domains

SCOP 2.08 (3 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Source organism organism	Xylella fastidiosa (strain 9a5c)
NCBI taxonomy ID ncbi_taxonomy_id	160492
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	285

Ohr from Xylella fastidiosa in oxidized state

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

Organic hydroperoxide resistance 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

4xx2__assembly_1__model_1

4xx2__assembly_1__model_1 | I(q)

4xx2__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) 9 domains

SCOP 2.08 (3 domains)

CATH v4.4 (6 domains)

7. Citations (1)