SAXSdb — 2ovi

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

Hypothetical protein chuX

Escherichia coli O157:H7

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	Q8X5N5_ECO57
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–164； UniProt 1–164 Author chain B； PDBConstruct 1–164； UniProt 1–164 Author chain C； PDBConstruct 1–164； UniProt 1–164 Author chain D； PDBConstruct 1–164； UniProt 1–164

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	2ovi
Deposition date deposition_date	2007-02-13
Structure title title	Structure of the Heme Binding Protein ChuX
Keywords keywords	;2 sets of 9 antiparallel beta sheet core flanked by 2 sets of 3 helices and another 2 sets of helices, Structural Genomics, Montreal-Kingston Bacterial Structural Genomics Initiative, BSGI, LIGAND BINDING PROTEIN, METAL TRANSPORT ;; LIGAND BINDING PROTEIN, METAL TRANSPORT
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.

2ovi__assembly_1__model_1

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

Download this curve (.dat)

2ovi__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2ovi__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.18 Å
Rg (electron density)	21.00 Å
Total Rg	21.85 Å
Atom count	2422
Residues	314
Excluded volume	43007 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2ovi__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2ovi__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	2oviA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1570 — Heme iron utilization protein-like fold
Homologous superfamily homologous superfamily	10 — HemS/ChuS/ChuX like domains

Domain ID domain_id	2oviB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1570 — Heme iron utilization protein-like fold
Homologous superfamily homologous superfamily	10 — HemS/ChuS/ChuX like domains

Domain ID domain_id	2oviC00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1570 — Heme iron utilization protein-like fold
Homologous superfamily homologous superfamily	10 — HemS/ChuS/ChuX like domains

Domain ID domain_id	2oviD00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1570 — Heme iron utilization protein-like fold
Homologous superfamily homologous superfamily	10 — HemS/ChuS/ChuX like domains

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Unit-cell length a length_a	76.560 Å
Unit-cell length b length_b	76.560 Å
Unit-cell length c length_c	140.864 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	16

Space group space_group	P 41
Space-group number int_tables_number	76
Crystal system crystal_system	—

Resolution resolution	2.050 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	—
R_work r_work	0.2130
R_free r_free	0.2500

Description description	Hypothetical protein chuX
Molecular weight formula_weight	18352.8 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	5192

Structure of the Heme Binding Protein ChuX

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

Hypothetical protein chuX

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

2ovi__assembly_1__model_1

2ovi__assembly_1__model_1 | I(q)

2ovi__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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 (1)

Source organism organism	Escherichia coli O157:H7
NCBI taxonomy ID ncbi_taxonomy_id	83334
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	360

Structure of the Heme Binding Protein ChuX

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

Hypothetical protein chuX

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

2ovi__assembly_1__model_1

2ovi__assembly_1__model_1 | I(q)

2ovi__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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 (1)