SAXSdb — 2bfu

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

COWPEA MOSAIC VIRUS, LARGE (L) SUBUNIT

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 120	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 10	No other associated polymer	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 12	No other associated polymer	Consistent with protein count
5	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count
6	Protein homooligomer	Homooligomer	Protein 10	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	VGNM_CPMV
Isoform	—
PDB entities	1, 2
Chains and sequence ranges	Author chain L； PDBConstruct 1–369； UniProt 460–828 Author chain S； PDBConstruct 1–189； UniProt 834–1022

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	2bfu
Deposition date deposition_date	2004-12-13
Structure title title	X-ray structure of CPMV top component
Keywords keywords	COMOVIRUS, VIRUS, VIRAL COAT PROTEIN, COWPEA MOSAIC VIRUS CPMV, TOP COMPONENT, NANOTECHNOLOGY, EMPTY PARTICLES, ICOSAHEDRAL 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.

2bfu__assembly_1__model_1

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

Download this curve (.dat)

2bfu__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2bfu__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)	124.60 Å
Total Rg	124.60 Å
Atom count	316920
Residues	33480
Excluded volume	4632700 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2bfu__assembly_1__model_1`	120-MERIC （120）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2bfu__assembly_2__model_1`	dimeric （2）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3	1	`2bfu__assembly_3__model_1`	decameric （10）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
4	1	`2bfu__assembly_4__model_1`	dodecameric （12）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
5	1	`2bfu__assembly_5__model_1`	dimeric （2）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
6	1	`2bfu__assembly_6__model_1`	decameric （10）	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)

Entity 1 Entity 1 polymer

Description description	COWPEA MOSAIC VIRUS, LARGE (L) SUBUNIT
Molecular weight formula_weight	40858.4 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L
Atom count atom_count	5282

MEQNLFALSLDDTSSVRGSLLDTKFAQTRVLLSKAMAGGDVLLDEYLYDVVNGQDFRATVAFLRTHVITGKIKVTATTNISDNSGCCLMLAINSGVRGKYSTDVYTICSQDSMTWNPGCKKNFSFTFNPNPCGDSWSAEMISRSRVRMTVICVSGWTLSPTTDVIAKLDWSIVNEKCEPTIYHLADCQNWLPLNRWMGKLTFPQGVTSEVRRMPLSIGGGAGATQAFLANMPNSWISMWRYFRGELHFEVTKMSSPYIKATVTFLIAFGNLSDAFGFYESFPHRIVQFAEVEEKCTLVFSQQEFVTAWSTQVNPRTTLEADGCPYLYAIIHDSTTGTISGDFNLGVKLVGIKDFCGIGSNPGIDGSRLL

Entity 2 Entity 2 polymer

Description description	COWPEA MOSAIC VIRUS, SMALL (S) SUBUNIT
Molecular weight formula_weight	20961.6 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	S

GPVCAEASDVYSPCMIASTPPAPFSDVTAVTFDLINGKITPVGDDNWNTHIYNPPIMNVLRTAAWKSGTIHVQLNVRGAGVKRADWDGQVFVYLRQSMNPESYDARTFVISQPGSAMLNFSFDIIGPNSGFEFAESPWANQTTWYLECVATNPRQIQQFEVNMRFDPNFRVAGNILMPPFPLSTETPPL

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6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d2bful1
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.4 — Positive stranded ssRNA viruses
Family Family family	b.121.4.2 — Comoviridae-like VP

Domain ID domain_id	d2bful2
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.4 — Positive stranded ssRNA viruses
Family Family family	b.121.4.2 — Comoviridae-like VP

Domain ID domain_id	d2bfus1
Class class	b — All beta proteins
Fold Fold fold	b.121 — Nucleoplasmin-like/VP (viral coat and capsid proteins)
Superfamily Superfamily superfamily	b.121.4 — Positive stranded ssRNA viruses
Family Family family	b.121.4.2 — Comoviridae-like VP

CATH v4.4 (2 domains)

Domain ID domain_id	2bfuL00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	2bfuS00
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	120 — Jelly Rolls
Homologous superfamily homologous superfamily	20 —

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Unit-cell length a length_a	311.407 Å
Unit-cell length b length_b	311.407 Å
Unit-cell length c length_c	311.407 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	120

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

Resolution resolution	4.000 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.2300
R_work r_work	0.2300
R_free r_free	—

X-ray structure of CPMV top component

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

COWPEA MOSAIC VIRUS, LARGE (L) SUBUNIT

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

2bfu__assembly_1__model_1

2bfu__assembly_1__model_1 | I(q)

2bfu__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

CATH v4.4 (2 domains)

7. Citations (1)

X-ray structure of CPMV top component

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

COWPEA MOSAIC VIRUS, LARGE (L) SUBUNIT

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

2bfu__assembly_1__model_1

2bfu__assembly_1__model_1 | I(q)

2bfu__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

CATH v4.4 (2 domains)

7. Citations (1)