SAXSdb — 2iy2

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

THIOL DISULFIDE INTERCHANGE PROTEIN DSBG

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CADMIUM ION × 4 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DSBG_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–72； UniProt 19–89 Author chain B； PDBConstruct 2–72； UniProt 19–89

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	2iy2
Deposition date deposition_date	2006-07-12
Structure title title	Crystal structure of the N-terminal dimer domain of E.coli DsbG
Keywords keywords	DSBC, DSBG, CHAPERONE, PERIPLASMIC, REDOX-ACTIVE CENTER, DISULFIDE BOND ISOMERASE; CHAPERONE
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.

2iy2__assembly_1__model_1

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

Download this curve (.dat)

2iy2__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2iy2__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.16 Å
Rg (electron density)	13.97 Å
Total Rg	15.37 Å
Atom count	1013
Residues	136
Excluded volume	18458 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2iy2__assembly_1__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 (3)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2iy2a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.3 — DsbC/DsbG N-terminal domain-like
Family Family family	d.17.3.1 — DsbC/DsbG N-terminal domain-like

Domain ID domain_id	d2iy2b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.3 — DsbC/DsbG N-terminal domain-like
Family Family family	d.17.3.1 — DsbC/DsbG N-terminal domain-like

CATH v4.4 (2 domains)

Domain ID domain_id	2iy2A00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	70 — Disulphide bond isomerase, DsbC/G, N-terminal

Domain ID domain_id	2iy2B00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	70 — Disulphide bond isomerase, DsbC/G, N-terminal

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Unit-cell length a length_a	56.842 Å
Unit-cell length b length_b	56.842 Å
Unit-cell length c length_c	42.049 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	8

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

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	56.790 Å
R factor r_factor	0.1980
R_work r_work	0.1960
R_free r_free	0.2360

Description description	THIOL DISULFIDE INTERCHANGE PROTEIN DSBG
Molecular weight formula_weight	7931.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	1071

Crystal structure of the N-terminal dimer domain of E.coli DsbG

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

THIOL DISULFIDE INTERCHANGE PROTEIN DSBG

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

2iy2__assembly_1__model_1

2iy2__assembly_1__model_1 | I(q)

2iy2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Description description	CADMIUM ION
Molecular weight formula_weight	112.4 kDa
Source method src_method	syn
Copy count entity_count	4

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	58

Crystal structure of the N-terminal dimer domain of E.coli DsbG

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

THIOL DISULFIDE INTERCHANGE PROTEIN DSBG

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

2iy2__assembly_1__model_1

2iy2__assembly_1__model_1 | I(q)

2iy2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)