SAXSdb — 4huh

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

Tail connector protein Gp15

Enterobacteria phage T4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	VG15_BPT4
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–261； UniProt 1–261 Author chain B； PDBConstruct 1–261； UniProt 1–261 Author chain C； PDBConstruct 1–261； UniProt 1–261 Author chain D； PDBConstruct 1–261； UniProt 1–261 Author chain E； PDBConstruct 1–261； UniProt 1–261 Author chain F； PDBConstruct 1–261； UniProt 1–261

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	4huh
Deposition date deposition_date	2012-11-02
Structure title title	Structure of the bacteriophage T4 tail terminator protein, gp15 (C-terminal truncation mutant 1-261).
Keywords keywords	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.

4huh__assembly_1__model_1

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

Download this curve (.dat)

4huh__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4huh__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	39.20 Å
Rg (electron density)	37.93 Å
Total Rg	38.41 Å
Atom count	10145
Residues	1226
Excluded volume	180760 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4huh__assembly_1__model_1`	hexameric （6）	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 (1)

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6. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id	4huhA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2000 — STM4215-like
Homologous superfamily homologous superfamily	40 — Myoviridae tail sheath stabiliser

Domain ID domain_id	4huhB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2000 — STM4215-like
Homologous superfamily homologous superfamily	40 — Myoviridae tail sheath stabiliser

Domain ID domain_id	4huhC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2000 — STM4215-like
Homologous superfamily homologous superfamily	40 — Myoviridae tail sheath stabiliser

Domain ID domain_id	4huhD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2000 — STM4215-like
Homologous superfamily homologous superfamily	40 — Myoviridae tail sheath stabiliser

Domain ID domain_id	4huhE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2000 — STM4215-like
Homologous superfamily homologous superfamily	40 — Myoviridae tail sheath stabiliser

Domain ID domain_id	4huhF01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2000 — STM4215-like
Homologous superfamily homologous superfamily	40 — Myoviridae tail sheath stabiliser

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Unit-cell length a length_a	65.874 Å
Unit-cell length b length_b	76.305 Å
Unit-cell length c length_c	93.893 Å
Unit-cell angle α angle_alpha	109.04 °
Unit-cell angle β angle_beta	104.62 °
Unit-cell angle γ angle_gamma	89.30 °
Molecules per unit cell Z z_pdb	6

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

Resolution resolution	3.200 Å
Low-resolution limit resolution_low	45.911 Å
R factor r_factor	0.1727
R_work r_work	0.1711
R_free r_free	0.2021

Description description	Tail connector protein Gp15
Molecular weight formula_weight	30459.2 kDa
Source method src_method	man
Copy count entity_count	6

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	10145

Structure of the bacteriophage T4 tail terminator protein, gp15 (C-terminal truncation mutant 1-261).

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

Tail connector protein Gp15

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

4huh__assembly_1__model_1

4huh__assembly_1__model_1 | I(q)

4huh__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) 6 domains

CATH v4.4 (6 domains)

7. Citations (1)

Source organism organism	Enterobacteria phage T4
NCBI taxonomy ID ncbi_taxonomy_id	10665
Host organism host_organism	Escherichia coli

Structure of the bacteriophage T4 tail terminator protein, gp15 (C-terminal truncation mutant 1-261).

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

Tail connector protein Gp15

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

4huh__assembly_1__model_1

4huh__assembly_1__model_1 | I(q)

4huh__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) 6 domains

CATH v4.4 (6 domains)

7. Citations (1)