SAXSdb — 3at7

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

Alginate-binding flagellin

Sphingomonas

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
2	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	Q25C86_9SPHN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–275； UniProt 1–274 Author chain B； PDBConstruct 2–275； UniProt 1–274

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	3at7
Deposition date deposition_date	2010-12-27
Structure title title	Crystal structure of bacterial cell-surface alginate-binding protein Algp7
Keywords keywords	two up-and-down four-helical bundles, alginate binding, alginate, STRUCTURAL PROTEIN; STRUCTURAL 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.

3at7__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3at7__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3at7__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	19.37 Å
Rg (electron density)	18.52 Å
Total Rg	19.55 Å
Atom count	1976
Residues	251
Excluded volume	35254 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3at7__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3at7__assembly_2__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

CATH v4.4 (2 domains)

Domain ID domain_id	3at7A00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1420 — A middle domain of Talin 1
Homologous superfamily homologous superfamily	20 — M75 peptidase, HXXE motif

Domain ID domain_id	3at7B00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1420 — A middle domain of Talin 1
Homologous superfamily homologous superfamily	20 — M75 peptidase, HXXE motif

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Unit-cell length a length_a	52.886 Å
Unit-cell length b length_b	97.734 Å
Unit-cell length c length_c	103.839 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 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1990
R_work r_work	0.1970
R_free r_free	0.2361

Description description	Alginate-binding flagellin
Molecular weight formula_weight	31701.1 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4251

Crystal structure of bacterial cell-surface alginate-binding protein Algp7

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

Alginate-binding flagellin

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

3at7__assembly_2__model_1

3at7__assembly_2__model_1 | I(q)

3at7__assembly_2__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

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Sphingomonas
NCBI taxonomy ID ncbi_taxonomy_id	90322
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	267

Crystal structure of bacterial cell-surface alginate-binding protein Algp7

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

Alginate-binding flagellin

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

3at7__assembly_2__model_1

3at7__assembly_2__model_1 | I(q)

3at7__assembly_2__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

CATH v4.4 (2 domains)

7. Citations (1)