1sid

MURINE POLYOMAVIRUS COMPLEXED WITH 3'SIALYL LACTOSE

Method: X-RAY DIFFRACTION

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

POLYOMAVIRUS COAT PROTEIN VP1

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Homooligomer	Protein 360 其他Polymer 360	N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose × 360	Consistent with protein count
2	Other combination	Homooligomer	Protein 6 其他Polymer 6	N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose × 6	Consistent with protein count
3	Other combination	Homooligomer	Protein 30 其他Polymer 30	N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose × 30	Consistent with protein count
4	Other combination	Homooligomer	Protein 36 其他Polymer 36	N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose × 36	Consistent with protein count
5	Other combination	Homooligomer	Protein 6 其他Polymer 6	N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose × 6	Consistent with protein count
6	Other combination	Homooligomer	Protein 30 其他Polymer 30	N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose × 30	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	COA1_POVMP
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–383； UniProt 1–383 Author chain B； PDBConstruct 1–383； UniProt 1–383 Author chain C； PDBConstruct 1–383； UniProt 1–383 Author chain D； PDBConstruct 1–383； UniProt 1–383 Author chain E； PDBConstruct 1–383； UniProt 1–383 Author chain F； PDBConstruct 1–383； UniProt 1–383

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	1sid
Deposition date deposition_date	1995-12-12
Structure title title	MURINE POLYOMAVIRUS COMPLEXED WITH 3'SIALYL LACTOSE
Keywords keywords	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.

1sid__assembly_1__model_1

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

Download this curve (.dat)

1sid__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1sid__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)	218.90 Å
Total Rg	218.70 Å
Atom count	1020180
Residues	129060
Excluded volume	18160000 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1sid__assembly_1__model_1`	360-MERIC （360）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1sid__assembly_2__model_1`	hexameric （6）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3	1	`1sid__assembly_3__model_1`	30-meric （30）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
4	1	`1sid__assembly_4__model_1`	36-meric （36）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
5	1	`1sid__assembly_5__model_1`	hexameric （6）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
6	1	`1sid__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 (2)

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1sida_
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	d1sidb_
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	d1sidc_
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	d1sidd_
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	d1side_
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	d1sidf_
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	1sidA00
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	1sidB00
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	1sidC00
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	1sidD00
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	1sidE00
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	1sidF00
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	570.000 Å
Unit-cell length b length_b	570.000 Å
Unit-cell length c length_c	570.000 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	3.650 Å
Low-resolution limit resolution_low	12.000 Å
R factor r_factor	0.2360
R_work r_work	0.2360
R_free r_free	0.2530

Description description	POLYOMAVIRUS COAT PROTEIN VP1
Molecular weight formula_weight	42405.1 kDa
Source method src_method	nat
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	17003

MURINE POLYOMAVIRUS COMPLEXED WITH 3'SIALYL LACTOSE

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

POLYOMAVIRUS COAT PROTEIN VP1

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

1sid__assembly_1__model_1

1sid__assembly_1__model_1 | I(q)

1sid__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (4)

MURINE POLYOMAVIRUS COMPLEXED WITH 3'SIALYL LACTOSE

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

POLYOMAVIRUS COAT PROTEIN VP1

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

1sid__assembly_1__model_1

1sid__assembly_1__model_1 | I(q)

1sid__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (4)