SAXSdb — 1no4

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

HEAD MORPHOGENESIS PROTEIN

Bacillus phage phi29

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	VG7_BPPH2
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–97； UniProt 1–97 Author chain B； PDBConstruct 1–97； UniProt 1–97 Author chain C； PDBConstruct 1–97； UniProt 1–97 Author chain D； PDBConstruct 1–97； UniProt 1–97

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	1no4
Deposition date deposition_date	2003-01-15
Structure title title	Crystal Structure of the pre-assembly scaffolding protein gp7 from the double-stranded DNA bacteriophage phi29
Keywords keywords	coiled-coil, 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.

1no4__assembly_1__model_1

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

Download this curve (.dat)

1no4__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1no4__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.70 Å
Rg (electron density)	25.27 Å
Total Rg	25.57 Å
Atom count	1220
Residues	152
Excluded volume	21602 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1no4__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1no4__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1no4__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 (2)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1no4a_
Class class	h — Coiled coil proteins
Fold Fold fold	h.1 — Parallel coiled-coil
Superfamily Superfamily superfamily	h.1.24 — Head morphogenesis protein gp7
Family Family family	h.1.24.1 — Head morphogenesis protein gp7

Domain ID domain_id	d1no4b_
Class class	h — Coiled coil proteins
Fold Fold fold	h.1 — Parallel coiled-coil
Superfamily Superfamily superfamily	h.1.24 — Head morphogenesis protein gp7
Family Family family	h.1.24.1 — Head morphogenesis protein gp7

Domain ID domain_id	d1no4c_
Class class	h — Coiled coil proteins
Fold Fold fold	h.1 — Parallel coiled-coil
Superfamily Superfamily superfamily	h.1.24 — Head morphogenesis protein gp7
Family Family family	h.1.24.1 — Head morphogenesis protein gp7

Domain ID domain_id	d1no4d_
Class class	h — Coiled coil proteins
Fold Fold fold	h.1 — Parallel coiled-coil
Superfamily Superfamily superfamily	h.1.24 — Head morphogenesis protein gp7
Family Family family	h.1.24.1 — Head morphogenesis protein gp7

CATH v4.4 (4 domains)

Domain ID domain_id	1no4A00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	400 —

Domain ID domain_id	1no4B00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	400 —

Domain ID domain_id	1no4C00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	400 —

Domain ID domain_id	1no4D00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	400 —

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Unit-cell length a length_a	114.240 Å
Unit-cell length b length_b	114.164 Å
Unit-cell length c length_c	60.297 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	16

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.200 Å
Low-resolution limit resolution_low	60.300 Å
R factor r_factor	0.2390
R_work r_work	0.2390
R_free r_free	0.2620

Description description	HEAD MORPHOGENESIS PROTEIN
Molecular weight formula_weight	11165.4 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	2527

Crystal Structure of the pre-assembly scaffolding protein gp7 from the double-stranded DNA bacteriophage phi29

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

HEAD MORPHOGENESIS 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

1no4__assembly_1__model_1

1no4__assembly_1__model_1 | I(q)

1no4__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

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Bacillus phage phi29
NCBI taxonomy ID ncbi_taxonomy_id	10756
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	129

Crystal Structure of the pre-assembly scaffolding protein gp7 from the double-stranded DNA bacteriophage phi29

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

HEAD MORPHOGENESIS 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

1no4__assembly_1__model_1

1no4__assembly_1__model_1 | I(q)

1no4__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

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)