SAXSdb — 2bko

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

HYPOTHETICAL PROTEIN PH0236

PYROCOCCUS HORIKOSHII

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CALCIUM ION × 10 CHLORIDE ION × 4 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O57975_PYRHO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–205； UniProt 1–205

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	2bko
Deposition date deposition_date	2005-02-17
Structure title title	STRUCTURE ANALYSIS OF UNKNOWN FUNCTION PROTEIN
Keywords keywords	HELIX RICH, HYPOTHETICAL PROTEIN; HYPOTHETICAL 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.

2bko__assembly_1__model_1

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

Download this curve (.dat)

2bko__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2bko__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.50 Å
Rg (electron density)	21.32 Å
Total Rg	22.44 Å
Atom count	2972
Residues	382
Excluded volume	54039 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2bko__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 (4)

Entity 1 Entity 1 polymer

Description description	HYPOTHETICAL PROTEIN PH0236
Molecular weight formula_weight	23012.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1787

MEEVEEFKYEPKSVKEIFIEMKDTVELMVDLAYASLLFGDKEIAEEVLELEERIDLLNYQLMMHSVLAARNVKEAEQVITILQIANAIEDISNAAGDLAKMVLEGVELHPVIKETILEGEEIIGKIQVYPESVIVGKTLGELDLATNTGVWIIAVRRGKRWIFGPNENFKIRAGDVLIGRGTRTSIDHLKEIARGAIRVIGNERA

Source Source

Source organism organism	PYROCOCCUS HORIKOSHII
Common name common_name	ARCHAEA
NCBI taxonomy ID ncbi_taxonomy_id	70601
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 3 Entity 3 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	209

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2bkoa1
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.12 — PhoU-like
Family Family family	a.7.12.1 — PhoU-like

Domain ID domain_id	d2bkoa2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.286 — TrkA C-terminal domain-like
Superfamily Superfamily superfamily	d.286.1 — TrkA C-terminal domain-like
Family Family family	d.286.1.1 — TrkA C-terminal domain-like

CATH v4.4 (2 domains)

Domain ID domain_id	2bkoA01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	220 — Phosphate transport system protein phou homolog 2; domain 2

Domain ID domain_id	2bkoA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	1450 — Regulator of K+ conductance, C-terminal domain

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Unit-cell length a length_a	70.860 Å
Unit-cell length b length_b	70.860 Å
Unit-cell length c length_c	98.272 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	8

Space group space_group	P 42 21 2
Space-group number int_tables_number	94
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	49.140 Å
R factor r_factor	0.2050
R_work r_work	0.2050
R_free r_free	0.2480

STRUCTURE ANALYSIS OF UNKNOWN FUNCTION PROTEIN

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

HYPOTHETICAL PROTEIN PH0236

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

2bko__assembly_1__model_1

2bko__assembly_1__model_1 | I(q)

2bko__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

STRUCTURE ANALYSIS OF UNKNOWN FUNCTION PROTEIN

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

HYPOTHETICAL PROTEIN PH0236

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

2bko__assembly_1__model_1

2bko__assembly_1__model_1 | I(q)

2bko__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)