1qiu

A triple beta-spiral in the adenovirus fibre shaft reveals a new structural motif for biological fibres

Method: X-RAY DIFFRACTION

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

ADENOVIRUS FIBRE

HUMAN ADENOVIRUS 2

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FIBP_ADE02
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–264； UniProt 319–582 Author chain B； PDBConstruct 1–264； UniProt 319–582 Author chain C； PDBConstruct 1–264； UniProt 319–582 Author chain D； PDBConstruct 1–264； UniProt 319–582 Author chain E； PDBConstruct 1–264； UniProt 319–582 Author chain F； PDBConstruct 1–264； UniProt 319–582

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	1qiu
Deposition date deposition_date	1999-06-16
Structure title title	A triple beta-spiral in the adenovirus fibre shaft reveals a new structural motif for biological fibres
Keywords keywords	FIBRE PROTEIN, TRIPLE BETA-SPIRAL, ADENOVIRUS; FIBRE 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.

1qiu__assembly_2__model_1

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

Download this curve (.dat)

1qiu__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qiu__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	31.00 Å
Rg (electron density)	30.56 Å
Total Rg	31.08 Å
Atom count	6021
Residues	792
Excluded volume	106420 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qiu__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1qiu__assembly_2__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 (2)

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6. Fold Classification (SCOP + CATH) 24 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d1qiua1
Class class	b — All beta proteins
Fold Fold fold	b.21 — Virus attachment protein globular domain
Superfamily Superfamily superfamily	b.21.1 — Virus attachment protein globular domain
Family Family family	b.21.1.1 — Adenovirus fiber protein 'knob' domain

Domain ID domain_id	d1qiua2
Class class	b — All beta proteins
Fold Fold fold	b.83 — Triple beta-spiral
Superfamily Superfamily superfamily	b.83.1 — Fibre shaft of virus attachment proteins
Family Family family	b.83.1.1 — Adenovirus

Domain ID domain_id	d1qiub1
Class class	b — All beta proteins
Fold Fold fold	b.21 — Virus attachment protein globular domain
Superfamily Superfamily superfamily	b.21.1 — Virus attachment protein globular domain
Family Family family	b.21.1.1 — Adenovirus fiber protein 'knob' domain

Domain ID domain_id	d1qiub2
Class class	b — All beta proteins
Fold Fold fold	b.83 — Triple beta-spiral
Superfamily Superfamily superfamily	b.83.1 — Fibre shaft of virus attachment proteins
Family Family family	b.83.1.1 — Adenovirus

Domain ID domain_id	d1qiuc1
Class class	b — All beta proteins
Fold Fold fold	b.21 — Virus attachment protein globular domain
Superfamily Superfamily superfamily	b.21.1 — Virus attachment protein globular domain
Family Family family	b.21.1.1 — Adenovirus fiber protein 'knob' domain

Domain ID domain_id	d1qiuc2
Class class	b — All beta proteins
Fold Fold fold	b.83 — Triple beta-spiral
Superfamily Superfamily superfamily	b.83.1 — Fibre shaft of virus attachment proteins
Family Family family	b.83.1.1 — Adenovirus

Domain ID domain_id	d1qiud1
Class class	b — All beta proteins
Fold Fold fold	b.21 — Virus attachment protein globular domain
Superfamily Superfamily superfamily	b.21.1 — Virus attachment protein globular domain
Family Family family	b.21.1.1 — Adenovirus fiber protein 'knob' domain

Domain ID domain_id	d1qiud2
Class class	b — All beta proteins
Fold Fold fold	b.83 — Triple beta-spiral
Superfamily Superfamily superfamily	b.83.1 — Fibre shaft of virus attachment proteins
Family Family family	b.83.1.1 — Adenovirus

Domain ID domain_id	d1qiue1
Class class	b — All beta proteins
Fold Fold fold	b.21 — Virus attachment protein globular domain
Superfamily Superfamily superfamily	b.21.1 — Virus attachment protein globular domain
Family Family family	b.21.1.1 — Adenovirus fiber protein 'knob' domain

Domain ID domain_id	d1qiue2
Class class	b — All beta proteins
Fold Fold fold	b.83 — Triple beta-spiral
Superfamily Superfamily superfamily	b.83.1 — Fibre shaft of virus attachment proteins
Family Family family	b.83.1.1 — Adenovirus

Domain ID domain_id	d1qiuf1
Class class	b — All beta proteins
Fold Fold fold	b.21 — Virus attachment protein globular domain
Superfamily Superfamily superfamily	b.21.1 — Virus attachment protein globular domain
Family Family family	b.21.1.1 — Adenovirus fiber protein 'knob' domain

Domain ID domain_id	d1qiuf2
Class class	b — All beta proteins
Fold Fold fold	b.83 — Triple beta-spiral
Superfamily Superfamily superfamily	b.83.1 — Fibre shaft of virus attachment proteins
Family Family family	b.83.1.1 — Adenovirus

CATH v4.4 (12 domains)

Domain ID domain_id	1qiuA01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	20 — reovirus attachment protein sigma1; domain 1

Domain ID domain_id	1qiuA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	90 — Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)
Homologous superfamily homologous superfamily	10 — Adenovirus pIV-related, attachment domain

Domain ID domain_id	1qiuB01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	20 — reovirus attachment protein sigma1; domain 1

Domain ID domain_id	1qiuB02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	90 — Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)
Homologous superfamily homologous superfamily	10 — Adenovirus pIV-related, attachment domain

Domain ID domain_id	1qiuC01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	20 — reovirus attachment protein sigma1; domain 1

Domain ID domain_id	1qiuC02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	90 — Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)
Homologous superfamily homologous superfamily	10 — Adenovirus pIV-related, attachment domain

Domain ID domain_id	1qiuD01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	20 — reovirus attachment protein sigma1; domain 1

Domain ID domain_id	1qiuD02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	90 — Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)
Homologous superfamily homologous superfamily	10 — Adenovirus pIV-related, attachment domain

Domain ID domain_id	1qiuE01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	20 — reovirus attachment protein sigma1; domain 1

Domain ID domain_id	1qiuE02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	90 — Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)
Homologous superfamily homologous superfamily	10 — Adenovirus pIV-related, attachment domain

Domain ID domain_id	1qiuF01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	20 — reovirus attachment protein sigma1; domain 1

Domain ID domain_id	1qiuF02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	90 — Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)
Homologous superfamily homologous superfamily	10 — Adenovirus pIV-related, attachment domain

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Unit-cell length a length_a	165.510 Å
Unit-cell length b length_b	95.870 Å
Unit-cell length c length_c	211.770 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	106.83 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	24

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.400 Å
Low-resolution limit resolution_low	25.000 Å
R factor r_factor	0.2320
R_work r_work	0.2320
R_free r_free	0.2650

Description description	ADENOVIRUS FIBRE
Molecular weight formula_weight	28587.7 kDa
Source method src_method	man
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	12621

A triple beta-spiral in the adenovirus fibre shaft reveals a new structural motif for biological fibres

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

ADENOVIRUS FIBRE

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

1qiu__assembly_2__model_1

1qiu__assembly_2__model_1 | I(q)

1qiu__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) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. Citations (1)

Source organism organism	HUMAN ADENOVIRUS 2
NCBI taxonomy ID ncbi_taxonomy_id	10515
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	579

A triple beta-spiral in the adenovirus fibre shaft reveals a new structural motif for biological fibres

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

ADENOVIRUS FIBRE

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

1qiu__assembly_2__model_1

1qiu__assembly_2__model_1 | I(q)

1qiu__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) 24 domains

SCOP 2.08 (12 domains)

CATH v4.4 (12 domains)

7. Citations (1)