SAXSdb — 2igl

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

Transthyretin-like protein

Escherichia coli

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	YEDX_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 5–118； UniProt 24–137 Author chain B； PDBConstruct 5–118； UniProt 24–137 Author chain C； PDBConstruct 5–118； UniProt 24–137 Author chain D； PDBConstruct 5–118； UniProt 24–137

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	2igl
Deposition date deposition_date	2006-09-22
Structure title title	Crystal Structure of E. coli YEDX, a transthyretin related protein
Keywords keywords	transthyretin, transthyretin related protein, UNKNOWN FUNCTION; UNKNOWN FUNCTION
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.

2igl__assembly_1__model_1

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

Download this curve (.dat)

2igl__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2igl__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.19 Å
Rg (electron density)	21.82 Å
Total Rg	22.94 Å
Atom count	3764
Residues	464
Excluded volume	66744 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2igl__assembly_1__model_1`	tetrameric （4）	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) 12 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d2igla1
Class class	b — All beta proteins
Fold Fold fold	b.3 — Prealbumin-like
Superfamily Superfamily superfamily	b.3.4 — Transthyretin (synonym: prealbumin)
Family Family family	b.3.4.0 — automated matches

Domain ID domain_id	d2igla2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2iglb1
Class class	b — All beta proteins
Fold Fold fold	b.3 — Prealbumin-like
Superfamily Superfamily superfamily	b.3.4 — Transthyretin (synonym: prealbumin)
Family Family family	b.3.4.0 — automated matches

Domain ID domain_id	d2iglb2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2iglc1
Class class	b — All beta proteins
Fold Fold fold	b.3 — Prealbumin-like
Superfamily Superfamily superfamily	b.3.4 — Transthyretin (synonym: prealbumin)
Family Family family	b.3.4.0 — automated matches

Domain ID domain_id	d2iglc2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2igld1
Class class	b — All beta proteins
Fold Fold fold	b.3 — Prealbumin-like
Superfamily Superfamily superfamily	b.3.4 — Transthyretin (synonym: prealbumin)
Family Family family	b.3.4.0 — automated matches

Domain ID domain_id	d2igld2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (4 domains)

Domain ID domain_id	2iglA00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	180 — Transthyretin/hydroxyisourate hydrolase domain

Domain ID domain_id	2iglB00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	180 — Transthyretin/hydroxyisourate hydrolase domain

Domain ID domain_id	2iglC00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	180 — Transthyretin/hydroxyisourate hydrolase domain

Domain ID domain_id	2iglD00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	180 — Transthyretin/hydroxyisourate hydrolase domain

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Unit-cell length a length_a	58.120 Å
Unit-cell length b length_b	77.370 Å
Unit-cell length c length_c	100.890 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 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	1.800 Å
Low-resolution limit resolution_low	27.210 Å
R factor r_factor	0.2070
R_work r_work	0.2070
R_free r_free	0.2420

Description description	Transthyretin-like protein
Molecular weight formula_weight	13443.1 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	4075

Crystal Structure of E. coli YEDX, a transthyretin related protein

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

Transthyretin-like 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

2igl__assembly_1__model_1

2igl__assembly_1__model_1 | I(q)

2igl__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) 12 domains

SCOP 2.08 (8 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	83333
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	311

Crystal Structure of E. coli YEDX, a transthyretin related protein

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

Transthyretin-like 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

2igl__assembly_1__model_1

2igl__assembly_1__model_1 | I(q)

2igl__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) 12 domains

SCOP 2.08 (8 domains)

CATH v4.4 (4 domains)

7. Citations (1)