SAXSdb — 1qgt

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

PROTEIN (HBV CAPSID PROTEIN)

Hepatitis B virus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 240	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	No other associated polymer	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 20	No other associated polymer	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 24	No other associated polymer	Consistent with protein count
5	Protein homooligomer	Homooligomer	Protein 4	No other associated polymer	Consistent with protein count
6	Protein homooligomer	Homooligomer	Protein 120	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q67855_HPBV0
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–149； UniProt 1–149 Author chain B； PDBConstruct 1–149； UniProt 1–149 Author chain C； PDBConstruct 1–149； UniProt 1–149 Author chain D； PDBConstruct 1–149； UniProt 1–149

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	1qgt
Deposition date deposition_date	1999-05-05
Structure title title	HUMAN HEPATITIS B VIRAL CAPSID (HBCAG)
Keywords keywords	VIRAL CAPSID 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.

1qgt__assembly_1__model_1

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

Download this curve (.dat)

1qgt__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qgt__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)	145.70 Å
Total Rg	145.70 Å
Atom count	273600
Residues	34200
Excluded volume	4897900 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qgt__assembly_1__model_1`	complete icosahedral assembly （240）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1qgt__assembly_2__model_1`	tetrameric （4）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3	1	`1qgt__assembly_3__model_1`	eicosameric （20）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
4	1	`1qgt__assembly_4__model_1`	24-meric （24）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
5	1	`1qgt__assembly_5__model_1`	tetrameric （4）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
6	1	`1qgt__assembly_6__model_1`	120-meric （120）	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) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1qgta_
Class class	a — All alpha proteins
Fold Fold fold	a.62 — Hepatitis B viral capsid (hbcag)
Superfamily Superfamily superfamily	a.62.1 — Hepatitis B viral capsid (hbcag)
Family Family family	a.62.1.1 — Hepatitis B viral capsid (hbcag)

Domain ID domain_id	d1qgtb_
Class class	a — All alpha proteins
Fold Fold fold	a.62 — Hepatitis B viral capsid (hbcag)
Superfamily Superfamily superfamily	a.62.1 — Hepatitis B viral capsid (hbcag)
Family Family family	a.62.1.1 — Hepatitis B viral capsid (hbcag)

Domain ID domain_id	d1qgtc_
Class class	a — All alpha proteins
Fold Fold fold	a.62 — Hepatitis B viral capsid (hbcag)
Superfamily Superfamily superfamily	a.62.1 — Hepatitis B viral capsid (hbcag)
Family Family family	a.62.1.1 — Hepatitis B viral capsid (hbcag)

Domain ID domain_id	d1qgtd_
Class class	a — All alpha proteins
Fold Fold fold	a.62 — Hepatitis B viral capsid (hbcag)
Superfamily Superfamily superfamily	a.62.1 — Hepatitis B viral capsid (hbcag)
Family Family family	a.62.1.1 — Hepatitis B viral capsid (hbcag)

CATH v4.4 (4 domains)

Domain ID domain_id	1qgtA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	4090 — Hepatitis B viral capsid (hbcag) fold
Homologous superfamily homologous superfamily	10 — Viral capsid, core domain supefamily, Hepatitis B virus

Domain ID domain_id	1qgtB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	4090 — Hepatitis B viral capsid (hbcag) fold
Homologous superfamily homologous superfamily	10 — Viral capsid, core domain supefamily, Hepatitis B virus

Domain ID domain_id	1qgtC00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	4090 — Hepatitis B viral capsid (hbcag) fold
Homologous superfamily homologous superfamily	10 — Viral capsid, core domain supefamily, Hepatitis B virus

Domain ID domain_id	1qgtD00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	4090 — Hepatitis B viral capsid (hbcag) fold
Homologous superfamily homologous superfamily	10 — Viral capsid, core domain supefamily, Hepatitis B virus

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Unit-cell length a length_a	538.400 Å
Unit-cell length b length_b	354.800 Å
Unit-cell length c length_c	370.100 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	132.30 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	480

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

Resolution resolution	3.300 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	—
R_work r_work	0.2710
R_free r_free	—

Description description	PROTEIN (HBV CAPSID PROTEIN)
Molecular weight formula_weight	16866.3 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D,B,A
Atom count atom_count	4560

HUMAN HEPATITIS B VIRAL CAPSID (HBCAG)

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

PROTEIN (HBV 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

1qgt__assembly_1__model_1

1qgt__assembly_1__model_1 | I(q)

1qgt__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)

Source organism organism	Hepatitis B virus
NCBI taxonomy ID ncbi_taxonomy_id	10407
Host organism host_organism	Escherichia coli BL21(DE3)

HUMAN HEPATITIS B VIRAL CAPSID (HBCAG)

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

PROTEIN (HBV 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

1qgt__assembly_1__model_1

1qgt__assembly_1__model_1 | I(q)

1qgt__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)