SAXSdb — 1iub

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

Fucose-specific lectin

Aleuria aurantia

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	beta-L-fucopyranose × 4 SULFATE ION × 2 CHLORIDE ION × 4 MERCURY (II) ION × 4 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	LECF_ALEAU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–312； UniProt 1–312

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	1iub
Deposition date deposition_date	2002-03-01
Structure title title	Fucose-specific lectin from Aleuria aurantia (Hg-derivative form)
Keywords keywords	Hg, MAD, Lectin, RIKEN Structural Genomics/Proteomics Initiative, RSGI, Structural Genomics, SUGAR BINDING PROTEIN; SUGAR BINDING 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.

1iub__assembly_1__model_1

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

Download this curve (.dat)

1iub__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1iub__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.21 Å
Rg (electron density)	27.31 Å
Total Rg	28.05 Å
Atom count	4800
Residues	624
Excluded volume	84507 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1iub__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 (6)

Entity 1 Entity 1 polymer

Description description	Fucose-specific lectin
Molecular weight formula_weight	33426.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2514

PTEFLYTSKIAAISWAATGGRQQRVYFQDLNGKIREAQRGGDNPWTGGSSQNVIGEAKLFSPLAAVTWKSAQGIQIRVYCVNKDNILSEFVYDGSKWITGQLGSVGVKVGSNSKLAALQWGGSESAPPNIRVYYQKSNGSGSSIHEYVWSGKWTAGASFGSTVPGTGIGATAIGPGRLRIYYQATDNKIREHCWDSNSWYVGGFSASASAGVSIAAISWGSTPNIRVYWQKGREELYEAAYGGSWNTPGQIKDASRPTPSLPDTFIAANSSGNIDISVFFQASGVSLQQWQWISGKGWSIGAVVPTGTPAGW

Source Source

Source organism organism	Aleuria aurantia
Common name common_name	orange peel mushroom
NCBI taxonomy ID ncbi_taxonomy_id	5188
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	beta-L-fucopyranose
Molecular weight formula_weight	164.2 kDa
Source method src_method	man
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

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

Entity 5 Entity 5 non-polymer

Description description	MERCURY (II) ION
Molecular weight formula_weight	200.6 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	114

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1iuba_
Class class	b — All beta proteins
Fold Fold fold	b.68 — 6-bladed beta-propeller
Superfamily Superfamily superfamily	b.68.8 — Fucose-specific lectin
Family Family family	b.68.8.1 — Fucose-specific lectin

CATH v4.4 (1 domains)

Domain ID domain_id	1iubA00
Class class	2 — Mainly Beta
Architecture architecture	120 — 6 Propeller
Topology topology	10 — Neuraminidase
Homologous superfamily homologous superfamily	70 — Fucose-specific lectin

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Unit-cell length a length_a	83.909 Å
Unit-cell length b length_b	83.909 Å
Unit-cell length c length_c	254.131 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 65 2 2
Space-group number int_tables_number	179
Crystal system crystal_system	—

Resolution resolution	2.310 Å
Low-resolution limit resolution_low	35.970 Å
R factor r_factor	—
R_work r_work	0.1560
R_free r_free	0.1830

Fucose-specific lectin from Aleuria aurantia (Hg-derivative form)

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

Fucose-specific lectin

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

1iub__assembly_1__model_1

1iub__assembly_1__model_1 | I(q)

1iub__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (2)

Fucose-specific lectin from Aleuria aurantia (Hg-derivative form)

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

Fucose-specific lectin

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

1iub__assembly_1__model_1

1iub__assembly_1__model_1 | I(q)

1iub__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (2)