SAXSdb — 1r7l

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

Phage protein

Bacillus cereus

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q81EU2_BACCR
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 9–110； UniProt 1–102 Author chain B； PDBConstruct 9–110； UniProt 1–102

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	1r7l
Deposition date deposition_date	2003-10-21
Structure title title	2.0 A Crystal Structure of a Phage Protein from Bacillus cereus ATCC 14579
Keywords keywords	;Structural Genomics, phage protein, two layers alpha-beta sandwich, PSI, Protein Structure Initiative, Midwest Center for Structural Genomics, MCSG, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
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.

1r7l__assembly_1__model_1

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

Download this curve (.dat)

1r7l__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1r7l__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.89 Å
Rg (electron density)	19.87 Å
Total Rg	20.83 Å
Atom count	1690
Residues	212
Excluded volume	30706 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1r7l__assembly_1__model_1`	dimeric （2）	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

SCOP 2.08 (4 domains)

Domain ID domain_id	d1r7la1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.277 — Bacillus phage protein
Superfamily Superfamily superfamily	d.277.1 — Bacillus phage protein
Family Family family	d.277.1.1 — Bacillus phage protein

Domain ID domain_id	d1r7la2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1r7lb1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.277 — Bacillus phage protein
Superfamily Superfamily superfamily	d.277.1 — Bacillus phage protein
Family Family family	d.277.1.1 — Bacillus phage protein

Domain ID domain_id	d1r7lb2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id	1r7lA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2120 — Bacillus phage protein
Homologous superfamily homologous superfamily	10 — Bacillus phage protein-like

Domain ID domain_id	1r7lB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	2120 — Bacillus phage protein
Homologous superfamily homologous superfamily	10 — Bacillus phage protein-like

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Unit-cell length a length_a	37.002 Å
Unit-cell length b length_b	66.338 Å
Unit-cell length c length_c	53.966 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	95.29 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	24.900 Å
R factor r_factor	0.2230
R_work r_work	0.2230
R_free r_free	0.2640

Description description	Phage protein
Molecular weight formula_weight	12498.5 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	1792

2.0 A Crystal Structure of a Phage Protein from Bacillus cereus ATCC 14579

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

Phage 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

1r7l__assembly_1__model_1

1r7l__assembly_1__model_1 | I(q)

1r7l__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

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Bacillus cereus
NCBI taxonomy ID ncbi_taxonomy_id	1396
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	102

2.0 A Crystal Structure of a Phage Protein from Bacillus cereus ATCC 14579

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

Phage 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

1r7l__assembly_1__model_1

1r7l__assembly_1__model_1 | I(q)

1r7l__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

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)