SAXSdb — 9fko

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

Baseplate protein

Staphylococcus phage 812

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 7	Unknown peptide × 1 water × 6	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 5	Unknown peptide × 1 water × 4	Consistent with protein count
3	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	A0A0U1WGQ5_9CAUD
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–172； UniProt 2–173 Author chain B； PDBConstruct 1–172； UniProt 2–173 Author chain C； PDBConstruct 1–172； UniProt 2–173 Author chain D； PDBConstruct 1–172； UniProt 2–173 Author chain E； PDBConstruct 1–172； UniProt 2–173 Author chain F； PDBConstruct 1–172； UniProt 2–173

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	9fko
Deposition date deposition_date	2024-06-03
Last revision last_revision	2025-06-18
Structure title title	Arm segment of bacteriophage phi812
Keywords keywords	phage, arm segment, virus; VIRUS
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.

9fko__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

9fko__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9fko__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	37.27 Å
Rg (electron density)	37.55 Å
Total Rg	37.66 Å
Atom count	10900
Residues	703
Excluded volume	97779 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9fko__assembly_1__model_1`	heptameric （7）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`9fko__assembly_2__model_1`	pentameric （5）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`9fko__assembly_3__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 (3)

Entity 1 Entity 1 polymer

Description description	Baseplate protein
Molecular weight formula_weight	19340.6 kDa
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	16348

AIATYNSHVELAKYLVSKADSVYLTIGKSTPWSNETNPPQPDENATVLQEVIGYKKATKVTLVRPSKSPEDDNKNLISYGNKSWVEVTPENAKAEGAKWVYLESSIVGDELPLGTYRQVGFVMDLVAKSGISKFNLVPSEVESTGTLLFFDNKQFQNRSEQTTAKERFIVEVDP

Source Source

Source organism organism	Staphylococcus phage 812
NCBI taxonomy ID ncbi_taxonomy_id	307898
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Unknown peptide
Molecular weight formula_weight	613.7 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

XXXXXXX

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	20

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Unit-cell length a length_a	92.930 Å
Unit-cell length b length_b	75.140 Å
Unit-cell length c length_c	94.450 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	109.87 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	12

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

Resolution resolution	1.800 Å
Low-resolution limit resolution_low	46.490 Å
R factor r_factor	0.2467
R_work r_work	0.2452
R_free r_free	0.2753

Arm segment of bacteriophage phi812

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

Baseplate 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

9fko__assembly_2__model_1

9fko__assembly_2__model_1 | I(q)

9fko__assembly_2__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 polymer

Polymer Polymer

Entity 3 Entity 3 water

7. Citations (1)

Arm segment of bacteriophage phi812

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

Baseplate 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

9fko__assembly_2__model_1

9fko__assembly_2__model_1 | I(q)

9fko__assembly_2__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 polymer

Polymer Polymer

Entity 3 Entity 3 water

7. Citations (1)