SAXSdb — 2wpq

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

TRIMERIC AUTOTRANSPORTER ADHESIN FRAGMENT

SALMONELLA ENTERICA SUBSP. ENTERICA SEROVAR TYPHIMURIUM

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	NITRATE ION × 2 CHLORIDE ION × 2 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8ZL64_SALTY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 30–70； UniProt 479–519 Author chain B； PDBConstruct 30–70； UniProt 479–519 Author chain C； PDBConstruct 30–70； UniProt 479–519

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	2wpq
Deposition date deposition_date	2009-08-09
Structure title title	Salmonella enterica SadA 479-519 fused to GCN4 adaptors (SadAK3, in- register fusion)
Keywords keywords	HYDROPHOBIC CORE, ION COORDINATION, PROTEIN EXPORT, TRIMERIC AUTOTRANSPORTER ADHESIN, TAA, MEMBRANE PROTEIN, POLAR CORE RESIDUES; MEMBRANE PROTEIN
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.

2wpq__assembly_1__model_1

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

Download this curve (.dat)

2wpq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2wpq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	38.60 Å
Rg (electron density)	42.81 Å
Total Rg	42.27 Å
Atom count	2425
Residues	297
Excluded volume	43183 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2wpq__assembly_1__model_1`	trimeric （3）	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 (4)

Entity 1 Entity 1 polymer

Description description	TRIMERIC AUTOTRANSPORTER ADHESIN FRAGMENT
Molecular weight formula_weight	11532.0 kDa
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	2595

MKQIEDKIEEILSKIYHIENEIARIKKLIFDTNEKVDQNTADITTNTNSINQNTTDIATNTTNINNLSDSMKQIEDKIEEILSKIYHIENEIARIKKLI

Source Source

Source organism organism	SALMONELLA ENTERICA SUBSP. ENTERICA SEROVAR TYPHIMURIUM
NCBI taxonomy ID ncbi_taxonomy_id	90371
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	NITRATE ION
Molecular weight formula_weight	62.0 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	170

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6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id	2wpqA00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	170 —

Domain ID domain_id	2wpqB00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	170 —

Domain ID domain_id	2wpqC00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	170 —

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Unit-cell length a length_a	26.022 Å
Unit-cell length b length_b	36.967 Å
Unit-cell length c length_c	178.445 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	92.73 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.850 Å
Low-resolution limit resolution_low	34.140 Å
R factor r_factor	0.2242
R_work r_work	0.2208
R_free r_free	0.2883

Salmonella enterica SadA 479-519 fused to GCN4 adaptors (SadAK3, in- register fusion)

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

TRIMERIC AUTOTRANSPORTER ADHESIN FRAGMENT

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

2wpq__assembly_1__model_1

2wpq__assembly_1__model_1 | I(q)

2wpq__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

7. Citations (2)

Salmonella enterica SadA 479-519 fused to GCN4 adaptors (SadAK3, in- register fusion)

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

TRIMERIC AUTOTRANSPORTER ADHESIN FRAGMENT

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

2wpq__assembly_1__model_1

2wpq__assembly_1__model_1 | I(q)

2wpq__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

7. Citations (2)