1sva

SIMIAN VIRUS 40

Method: X-RAY DIFFRACTION

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

SIMIAN VIRUS 40

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 360	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 6	No other associated polymer	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 30	No other associated polymer	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 36	No other associated polymer	Consistent with protein count
5	Protein homooligomer	Homooligomer	Protein 6	No other associated polymer	Consistent with protein count
6	Protein homooligomer	Homooligomer	Protein 30	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	COA1_SV40
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain 1； PDBConstruct 1–361； UniProt 4–364 Author chain 2； PDBConstruct 1–361； UniProt 4–364 Author chain 3； PDBConstruct 1–361； UniProt 4–364 Author chain 4； PDBConstruct 1–361； UniProt 4–364 Author chain 5； PDBConstruct 1–361； UniProt 4–364 Author chain 6； PDBConstruct 1–361； UniProt 4–364

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	1sva
Deposition date deposition_date	1995-11-27
Structure title title	SIMIAN VIRUS 40
Keywords keywords	VIRUS COAT PROTEIN, Icosahedral virus, Virus; VIRUS
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.

1sva__assembly_1__model_1

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

Download this curve (.dat)

1sva__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1sva__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	0.00 Å
Rg (electron density)	214.80 Å
Total Rg	214.70 Å
Atom count	958980
Residues	123420
Excluded volume	17033000 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1sva__assembly_1__model_1`	complete icosahedral assembly （360）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1sva__assembly_2__model_1`	hexameric （6）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3	1	`1sva__assembly_3__model_1`	30-meric （30）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
4	1	`1sva__assembly_4__model_1`	36-meric （36）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
5	1	`1sva__assembly_5__model_1`	hexameric （6）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
6	1	`1sva__assembly_6__model_1`	30-meric （30）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (1)

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1sva1_
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.6 — Group I dsDNA viruses
Family Family family	b.121.6.1 — Papovaviridae-like VP

Domain ID domain_id	d1sva2_
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.6 — Group I dsDNA viruses
Family Family family	b.121.6.1 — Papovaviridae-like VP

Domain ID domain_id	d1sva3_
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.6 — Group I dsDNA viruses
Family Family family	b.121.6.1 — Papovaviridae-like VP

Domain ID domain_id	d1sva4_
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.6 — Group I dsDNA viruses
Family Family family	b.121.6.1 — Papovaviridae-like VP

Domain ID domain_id	d1sva5_
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.6 — Group I dsDNA viruses
Family Family family	b.121.6.1 — Papovaviridae-like VP

Domain ID domain_id	d1sva6_
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.6 — Group I dsDNA viruses
Family Family family	b.121.6.1 — Papovaviridae-like VP

CATH v4.4 (6 domains)

Domain ID domain_id	1sva100
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	175 — Polyomavirus Vp1; Chain A
Homologous superfamily homologous superfamily	10 — Capsid protein VP1,Polyomavirus

Domain ID domain_id	1sva200
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	175 — Polyomavirus Vp1; Chain A
Homologous superfamily homologous superfamily	10 — Capsid protein VP1,Polyomavirus

Domain ID domain_id	1sva300
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	175 — Polyomavirus Vp1; Chain A
Homologous superfamily homologous superfamily	10 — Capsid protein VP1,Polyomavirus

Domain ID domain_id	1sva400
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	175 — Polyomavirus Vp1; Chain A
Homologous superfamily homologous superfamily	10 — Capsid protein VP1,Polyomavirus

Domain ID domain_id	1sva500
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	175 — Polyomavirus Vp1; Chain A
Homologous superfamily homologous superfamily	10 — Capsid protein VP1,Polyomavirus

Domain ID domain_id	1sva600
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	175 — Polyomavirus Vp1; Chain A
Homologous superfamily homologous superfamily	10 — Capsid protein VP1,Polyomavirus

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Unit-cell length a length_a	558.000 Å
Unit-cell length b length_b	558.000 Å
Unit-cell length c length_c	558.000 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	720

Space group space_group	I 2 3
Space-group number int_tables_number	197
Crystal system crystal_system	—

Resolution resolution	3.100 Å
Low-resolution limit resolution_low	12.000 Å
R factor r_factor	0.2570
R_work r_work	0.2570
R_free r_free	0.2680

Description description	SIMIAN VIRUS 40
Molecular weight formula_weight	39819.0 kDa
Source method src_method	nat
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	1,2,3,4,5,6
Atom count atom_count	15983

SIMIAN VIRUS 40

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

SIMIAN VIRUS 40

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

1sva__assembly_1__model_1

1sva__assembly_1__model_1 | I(q)

1sva__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (2)

SIMIAN VIRUS 40

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

SIMIAN VIRUS 40

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

1sva__assembly_1__model_1

1sva__assembly_1__model_1 | I(q)

1sva__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (2)