SAXSdb — 2xf5

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

GP23.1

BACILLUS PHAGE SPP1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O48468_BPSPP
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–51； UniProt 2–51 Author chain B； PDBConstruct 2–51； UniProt 2–51 Author chain C； PDBConstruct 2–51； UniProt 2–51 Author chain D； PDBConstruct 2–51； UniProt 2–51 Author chain E； PDBConstruct 2–51； UniProt 2–51 Author chain F； PDBConstruct 2–51； UniProt 2–51

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	2xf5
Deposition date deposition_date	2010-05-20
Structure title title	Crystal structure of Bacillus subtilis SPP1 phage gp23.1, a putative chaperone.
Keywords keywords	VIRAL PROTEIN, CHAPERONE; 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.

2xf5__assembly_1__model_1

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

Download this curve (.dat)

2xf5__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2xf5__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.05 Å
Rg (electron density)	20.80 Å
Total Rg	21.73 Å
Atom count	2335
Residues	276
Excluded volume	41200 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2xf5__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 (2)

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6. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id	2xf5A00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	1530 —

Domain ID domain_id	2xf5B00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	1530 —

Domain ID domain_id	2xf5C00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	1530 —

Domain ID domain_id	2xf5D00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	1530 —

Domain ID domain_id	2xf5E00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	1530 —

Domain ID domain_id	2xf5F00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	1530 —

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Unit-cell length a length_a	52.737 Å
Unit-cell length b length_b	66.465 Å
Unit-cell length c length_c	82.933 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	24

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	44.500 Å
R factor r_factor	0.1701
R_work r_work	0.1691
R_free r_free	0.1974

Description description	GP23.1
Molecular weight formula_weight	5863.9 kDa
Mutation mutation	YES
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	2475

Crystal structure of Bacillus subtilis SPP1 phage gp23.1, a putative chaperone.

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

GP23.1

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

2xf5__assembly_1__model_1

2xf5__assembly_1__model_1 | I(q)

2xf5__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) 6 domains

CATH v4.4 (6 domains)

7. Citations (1)

Source organism organism	BACILLUS PHAGE SPP1
NCBI taxonomy ID ncbi_taxonomy_id	10724
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	137

Crystal structure of Bacillus subtilis SPP1 phage gp23.1, a putative chaperone.

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

GP23.1

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

2xf5__assembly_1__model_1

2xf5__assembly_1__model_1 | I(q)

2xf5__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) 6 domains

CATH v4.4 (6 domains)

7. Citations (1)