1n80

Bacteriophage T4 baseplate structural protein gp8

Method: X-RAY DIFFRACTION

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

baseplate structural protein gp8

Enterobacteria phage T4

UniProt P19062

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CHLORIDE ION × 16 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	CHLORIDE ION × 16 water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 4	CHLORIDE ION × 32 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	VG08_BPT4
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–334； UniProt 1–334 Author chain B； PDBConstruct 1–334； UniProt 1–334 Author chain C； PDBConstruct 1–334； UniProt 1–334 Author chain D； PDBConstruct 1–334； UniProt 1–334

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	1n80
Deposition date deposition_date	2002-11-18
Structure title title	Bacteriophage T4 baseplate structural protein gp8
Keywords keywords	bacteriophage T4, baseplate, dimer, beta sandwich, halide binding, Viral protein; VIRAL PROTEIN
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.

1n80__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1n80__assembly_3__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1n80__assembly_3__model_1 | P(r) · Pending

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

Rg（Guinier）	36.27 Å
Rg (electron density)	35.31 Å
Total Rg	35.78 Å
Atom count	10556
Residues	1312
Excluded volume	187060 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1n80__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1n80__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1n80__assembly_3__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	baseplate structural protein gp8
Molecular weight formula_weight	38041.7 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	11016

MNDSSVIYRAIVTSKFRTEKMLNFYNSIGSGPDKNTIFITFGRSEPWSSNENEVGFAPPYPTDSVLGVTDMWTHMMGTVKVLPSMLDAVIPRRDWGDTRYPDPYTFRINDIVVCNSAPYNATESGAGWLVYRCLDVPDTGMCSIASLTDKDECLKLGGKWTPSARSMTPPEGRGDAEGTIEPGDGYVWEYLFEIPPDVSINRCTNEYIVVPWPEELKEDPTRWGYEDNLTWQQDDFGLIYRVKANTIRFKAYLDSVYFPEAALPGNKGFRQISIITNPLEAKAHPNDPNVKAEKDYYDPEDLMRHSGEMIYMENRPPIIMAMDQTEEINILFTF

Source Source

Source organism organism	Enterobacteria phage T4
NCBI taxonomy ID ncbi_taxonomy_id	10665
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	32

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	460

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1n80a_
Class class	b — All beta proteins
Fold Fold fold	b.127 — Baseplate structural protein gp8
Superfamily Superfamily superfamily	b.127.1 — Baseplate structural protein gp8
Family Family family	b.127.1.1 — Baseplate structural protein gp8

Domain ID domain_id	d1n80b_
Class class	b — All beta proteins
Fold Fold fold	b.127 — Baseplate structural protein gp8
Superfamily Superfamily superfamily	b.127.1 — Baseplate structural protein gp8
Family Family family	b.127.1.1 — Baseplate structural protein gp8

Domain ID domain_id	d1n80c_
Class class	b — All beta proteins
Fold Fold fold	b.127 — Baseplate structural protein gp8
Superfamily Superfamily superfamily	b.127.1 — Baseplate structural protein gp8
Family Family family	b.127.1.1 — Baseplate structural protein gp8

Domain ID domain_id	d1n80d_
Class class	b — All beta proteins
Fold Fold fold	b.127 — Baseplate structural protein gp8
Superfamily Superfamily superfamily	b.127.1 — Baseplate structural protein gp8
Family Family family	b.127.1.1 — Baseplate structural protein gp8

CATH v4.4 (8 domains)

Domain ID domain_id	1n80A01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	340 — baseplate structural protein gp8, domain 1
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 1

Domain ID domain_id	1n80A02
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	290 — baseplate structural protein gp8, domain 2
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 2

Domain ID domain_id	1n80B01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	340 — baseplate structural protein gp8, domain 1
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 1

Domain ID domain_id	1n80B02
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	290 — baseplate structural protein gp8, domain 2
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 2

Domain ID domain_id	1n80C01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	340 — baseplate structural protein gp8, domain 1
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 1

Domain ID domain_id	1n80C02
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	290 — baseplate structural protein gp8, domain 2
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 2

Domain ID domain_id	1n80D01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	340 — baseplate structural protein gp8, domain 1
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 1

Domain ID domain_id	1n80D02
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	290 — baseplate structural protein gp8, domain 2
Homologous superfamily homologous superfamily	10 — baseplate structural protein gp8, domain 2

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Unit-cell length a length_a	66.869 Å
Unit-cell length b length_b	66.777 Å
Unit-cell length c length_c	82.158 Å
Unit-cell angle α angle_alpha	93.11 °
Unit-cell angle β angle_beta	101.28 °
Unit-cell angle γ angle_gamma	90.77 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	2.450 Å
Low-resolution limit resolution_low	39.110 Å
R factor r_factor	0.2360
R_work r_work	0.2360
R_free r_free	0.2840

Bacteriophage T4 baseplate structural protein gp8

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

baseplate structural protein gp8

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

1n80__assembly_3__model_1

1n80__assembly_3__model_1 | I(q)

1n80__assembly_3__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Bacteriophage T4 baseplate structural protein gp8

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

baseplate structural protein gp8

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

1n80__assembly_3__model_1

1n80__assembly_3__model_1 | I(q)

1n80__assembly_3__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (4 domains)

CATH v4.4 (8 domains)

7. Citations (1)