3e8k

Crystal structure of HK97 Prohead II

Method: X-RAY DIFFRACTION

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

Major capsid protein

Enterobacteria phage HK97

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 420	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 7	No other associated polymer	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 35	No other associated polymer	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 42	No other associated polymer	Consistent with protein count
5	Protein homooligomer	Homooligomer	Protein 7	No other associated polymer	Consistent with protein count
6	Protein homooligomer	Homooligomer	Protein 105	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	COAT_BPHK7
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–55； UniProt 104–158 Author chain A； PDBConstruct 60–273； UniProt 172–385 Author chain B； PDBConstruct 1–55； UniProt 104–158 Author chain B； PDBConstruct 60–273； UniProt 172–385 Author chain C； PDBConstruct 1–55； UniProt 104–158 Author chain C； PDBConstruct 60–273； UniProt 172–385 Author chain D； PDBConstruct 1–55； UniProt 104–158 Author chain D； PDBConstruct 60–273； UniProt 172–385 Author chain E； PDBConstruct 1–55； UniProt 104–158 Author chain E； PDBConstruct 60–273； UniProt 172–385 Author chain F； PDBConstruct 1–55； UniProt 104–158 Author chain F； PDBConstruct 60–273； UniProt 172–385 Author chain G； PDBConstruct 1–55； UniProt 104–158 Author chain G； PDBConstruct 60–273； UniProt 172–385

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	3e8k
Deposition date deposition_date	2008-08-20
Structure title title	Crystal structure of HK97 Prohead II
Keywords keywords	HK97 capsid fold, Capsid protein, Virion, 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.

3e8k__assembly_1__model_1

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

Download this curve (.dat)

3e8k__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3e8k__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)	231.30 Å
Total Rg	231.00 Å
Atom count	815400
Residues	105480
Excluded volume	14400000 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3e8k__assembly_1__model_1`	420-meric （420）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3e8k__assembly_2__model_1`	heptameric （7）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3	1	`3e8k__assembly_3__model_1`	35-meric （35）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
4	1	`3e8k__assembly_4__model_1`	42-meric （42）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
5	1	`3e8k__assembly_5__model_1`	heptameric （7）	Excluded	—	—
	Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
6	1	`3e8k__assembly_6__model_1`	105-meric （105）	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) 14 domains

CATH v4.4 (14 domains)

Domain ID domain_id	3e8kA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2400 — Major capsid protein gp5 fold
Homologous superfamily homologous superfamily	10 — Major capsid protein gp5

Domain ID domain_id	3e8kA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

Domain ID domain_id	3e8kB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2400 — Major capsid protein gp5 fold
Homologous superfamily homologous superfamily	10 — Major capsid protein gp5

Domain ID domain_id	3e8kB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

Domain ID domain_id	3e8kC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2400 — Major capsid protein gp5 fold
Homologous superfamily homologous superfamily	10 — Major capsid protein gp5

Domain ID domain_id	3e8kC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

Domain ID domain_id	3e8kD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2400 — Major capsid protein gp5 fold
Homologous superfamily homologous superfamily	10 — Major capsid protein gp5

Domain ID domain_id	3e8kD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

Domain ID domain_id	3e8kE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2400 — Major capsid protein gp5 fold
Homologous superfamily homologous superfamily	10 — Major capsid protein gp5

Domain ID domain_id	3e8kE02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

Domain ID domain_id	3e8kF01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2400 — Major capsid protein gp5 fold
Homologous superfamily homologous superfamily	10 — Major capsid protein gp5

Domain ID domain_id	3e8kF02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

Domain ID domain_id	3e8kG01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2400 — Major capsid protein gp5 fold
Homologous superfamily homologous superfamily	10 — Major capsid protein gp5

Domain ID domain_id	3e8kG02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2320 — hypothetical protein PF0899 fold
Homologous superfamily homologous superfamily	10 — hypothetical protein PF0899 domain

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Unit-cell length a length_a	553.033 Å
Unit-cell length b length_b	574.390 Å
Unit-cell length c length_c	587.358 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	840

Space group space_group	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Resolution resolution	3.650 Å
Low-resolution limit resolution_low	35.000 Å
R factor r_factor	0.3650
R_work r_work	—
R_free r_free	—

Description description	Major capsid protein
Molecular weight formula_weight	29738.4 kDa
Mutation mutation	W336F
Source method src_method	man
Copy count entity_count	7

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G
Atom count atom_count	13590

Crystal structure of HK97 Prohead II

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

Major 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

3e8k__assembly_1__model_1

3e8k__assembly_1__model_1 | I(q)

3e8k__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

Source Source

6. Fold Classification (SCOP + CATH) 14 domains

CATH v4.4 (14 domains)

7. Citations (1)

Source organism organism	Enterobacteria phage HK97
Common name common_name	Bacteriophage HK97
NCBI taxonomy ID ncbi_taxonomy_id	37554
Host organism host_organism	Escherichia coli

Crystal structure of HK97 Prohead II

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

Major 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

3e8k__assembly_1__model_1

3e8k__assembly_1__model_1 | I(q)

3e8k__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

Source Source

6. Fold Classification (SCOP + CATH) 14 domains

CATH v4.4 (14 domains)

7. Citations (1)