SAXSdb — 2bsf

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

SIGMA C CAPSID PROTEIN

AVIAN REOVIRUS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	SULFATE ION × 9 ZINC ION × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O12287_REOV9
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–176； UniProt 151–326

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	2bsf
Deposition date deposition_date	2005-05-20
Structure title title	Structure of the C-terminal receptor-binding domain of avian reovirus fibre sigmaC, Zn crystal form.
Keywords keywords	ORTHOREOVIRUS, TRIPLE BETA-SPIRAL, BETA-BARREL, VIRAL PROTEIN; VIRAL 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.

2bsf__assembly_1__model_1

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

Download this curve (.dat)

2bsf__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2bsf__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.73 Å
Rg (electron density)	25.80 Å
Total Rg	26.75 Å
Atom count	4026
Residues	528
Excluded volume	70394 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2bsf__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	SIGMA C CAPSID PROTEIN
Molecular weight formula_weight	18912.9 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	1506

SLESTASHGLSFSPPLSVADGVVSLDMDPYFCSQRVSLTSYSAEAQLMQFRWMARGTNGSSDTIDMTVNAHCHGRRTDYMMSSTGNLTVTSNVVLLTFDLSDITHIPSDLARLVPSAGFQAASFPVDVSFTRDSATHAYQAYGVYSSSRVFTITFPTGGDGTANIRSLTVRTGIDT

Source Source

Source organism organism	AVIAN REOVIRUS
NCBI taxonomy ID ncbi_taxonomy_id	38170
Host organism host_organism	ESCHERICHIA COLI BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	164

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	2bsfA01
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	2bsfA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	90 — Adenovirus Type 5 Fiber Protein (Receptor Binding Domain)
Homologous superfamily homologous superfamily	40 —

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7. Citations (7)

Structure of the Carboxy-Terminal Receptor-Binding Domain of Avian Reovirus Fibre Sigmac

J.Mol.Biol. (2005)

PMID: 16236316 · DOI: 10.1016/J.JMB.2005.09.034 PRIMARY

Crystallisation of the C-Terminal Globular Domain of Avian Reovirus Fibre

Acta Crystallogr.,Sect.F (2005)

PMID: 16511119 · DOI: 10.1107/S1744309105016933

Crystal Structure of Reovirus Attachment Protein Sigma1 Reveals Evolutionary Relationship to Adenovirus Fiber

Embo J. (2002)

PMID: 11782420 · DOI: 10.1093/EMBOJ/21.1.1

Subunit Composition and Conformational Stability of the Oligomeric Form of the Avian Reovirus Cell-Attachment Protein Sigmac

J.Gen.Virol. (2002)

PMID: 11752709 · DOI: 10.1099/0022-1317-83-1-131

;The Avian Reovirus Genome Segment S1 is a Functionally Tricistronic Gene that Expresses One Structure and Two Nonstructural Proteins in Infected Cells ;

Virology (2001)

PMID: 11883183 · DOI: 10.1006/VIRO.2001.1159

Oligomerization and Cell-Binding Properties of the Avian Reovirus Cell-Attachment Protein Sigmac

Virology (2000)

PMID: 10964779 · DOI: 10.1006/VIRO.2000.0473

Protein Architecture of Avian Reovirus S1133 and Identification of the Cell Attachment Protein

J.Virol. (1997)

PMID: 8985323

Unit-cell length a length_a	74.777 Å
Unit-cell length b length_b	74.777 Å
Unit-cell length c length_c	74.639 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	6

Space group space_group	P 3 2 1
Space-group number int_tables_number	150
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	74.540 Å
R factor r_factor	0.1670
R_work r_work	0.1610
R_free r_free	0.2230

Structure of the C-terminal receptor-binding domain of avian reovirus fibre sigmaC, Zn crystal form.

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

SIGMA C CAPSID 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

2bsf__assembly_1__model_1

2bsf__assembly_1__model_1 | I(q)

2bsf__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) 2 domains

CATH v4.4 (2 domains)

7. Citations (7)

Structure of the C-terminal receptor-binding domain of avian reovirus fibre sigmaC, Zn crystal form.

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

SIGMA C CAPSID 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

2bsf__assembly_1__model_1

2bsf__assembly_1__model_1 | I(q)

2bsf__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) 2 domains

CATH v4.4 (2 domains)

7. Citations (7)