SAXSdb — 1l6p

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

Thiol:disulfide interchange protein dsbD

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DSBD_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–125； UniProt 20–144

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	1l6p
Deposition date deposition_date	2002-03-12
Structure title title	N-terminal of DsbD (residues 20-144) from E. coli.
Keywords keywords	disulfide bond isomerase protein, immunoglobulin-like fold, ELECTRON TRANSPORT; ELECTRON 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.

1l6p__assembly_1__model_1

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

Download this curve (.dat)

1l6p__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1l6p__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.66 Å
Rg (electron density)	15.54 Å
Total Rg	16.50 Å
Atom count	958
Residues	121
Excluded volume	16864 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1l6p__assembly_1__model_1`	monomeric （1）	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) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1l6pa_
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.17 — Thiol:disulfide interchange protein DsbD, N-terminal domain (DsbD-alpha)
Family Family family	b.1.17.1 — Thiol:disulfide interchange protein DsbD, N-terminal domain (DsbD-alpha)

CATH v4.4 (1 domains)

Domain ID domain_id	1l6pA00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1250 — Thiol:disulfide interchange protein DsbD, N-terminal domain

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Unit-cell length a length_a	53.206 Å
Unit-cell length b length_b	55.630 Å
Unit-cell length c length_c	102.052 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	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	1.650 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.1408
R_work r_work	0.1385
R_free r_free	0.2255

Description description	Thiol:disulfide interchange protein dsbD
Molecular weight formula_weight	14126.7 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1203

N-terminal of DsbD (residues 20-144) from E. coli.

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

Thiol:disulfide interchange protein dsbD

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

1l6p__assembly_1__model_1

1l6p__assembly_1__model_1 | I(q)

1l6p__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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli K12

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	245

N-terminal of DsbD (residues 20-144) from E. coli.

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

Thiol:disulfide interchange protein dsbD

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

1l6p__assembly_1__model_1

1l6p__assembly_1__model_1 | I(q)

1l6p__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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)