SAXSdb — 2o2a

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

Hypothetical protein gbs1413

Streptococcus agalactiae

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	Q8E4I8_STRA3
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–128； UniProt 1–126 Author chain B； PDBConstruct 3–128； UniProt 1–126 Author chain C； PDBConstruct 3–128； UniProt 1–126 Author chain D； PDBConstruct 3–128； UniProt 1–126

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	2o2a
Deposition date deposition_date	2006-11-29
Structure title title	The crystal structure of a protein of unknown function from Streptococcus agalactiae
Keywords keywords	;Streptococcus agalactiae, Structural genomics, PSI-2, 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.

2o2a__assembly_1__model_1

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

Download this curve (.dat)

2o2a__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2o2a__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.53 Å
Rg (electron density)	22.57 Å
Total Rg	23.52 Å
Atom count	2027
Residues	247
Excluded volume	36005 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2o2a__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2o2a__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2o2a__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) 12 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d2o2aa1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.33 — SecB-like
Superfamily Superfamily superfamily	d.33.1 — SecB-like
Family Family family	d.33.1.2 — SP1558-like

Domain ID domain_id	d2o2aa2
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	d2o2ab2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.33 — SecB-like
Superfamily Superfamily superfamily	d.33.1 — SecB-like
Family Family family	d.33.1.2 — SP1558-like

Domain ID domain_id	d2o2ab3
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	d2o2ac2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.33 — SecB-like
Superfamily Superfamily superfamily	d.33.1 — SecB-like
Family Family family	d.33.1.2 — SP1558-like

Domain ID domain_id	d2o2ac3
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	d2o2ad2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.33 — SecB-like
Superfamily Superfamily superfamily	d.33.1 — SecB-like
Family Family family	d.33.1.2 — SP1558-like

Domain ID domain_id	d2o2ad3
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 (4 domains)

Domain ID domain_id	2o2aA00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	420 — Bacterial Protein-export protein SecB
Homologous superfamily homologous superfamily	10 — SecB-like

Domain ID domain_id	2o2aB00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	420 — Bacterial Protein-export protein SecB
Homologous superfamily homologous superfamily	10 — SecB-like

Domain ID domain_id	2o2aC00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	420 — Bacterial Protein-export protein SecB
Homologous superfamily homologous superfamily	10 — SecB-like

Domain ID domain_id	2o2aD00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	420 — Bacterial Protein-export protein SecB
Homologous superfamily homologous superfamily	10 — SecB-like

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Unit-cell length a length_a	103.110 Å
Unit-cell length b length_b	103.110 Å
Unit-cell length c length_c	278.408 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	72

Space group space_group	H 3 2
Space-group number int_tables_number	155
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	92.850 Å
R factor r_factor	0.2040
R_work r_work	0.2015
R_free r_free	0.2523

Description description	Hypothetical protein gbs1413
Molecular weight formula_weight	14720.1 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	4285

The crystal structure of a protein of unknown function from Streptococcus agalactiae

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

Hypothetical protein gbs1413

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

2o2a__assembly_1__model_1

2o2a__assembly_1__model_1 | I(q)

2o2a__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) 12 domains

SCOP 2.08 (8 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Streptococcus agalactiae
NCBI taxonomy ID ncbi_taxonomy_id	208435
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	242

The crystal structure of a protein of unknown function from Streptococcus agalactiae

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

Hypothetical protein gbs1413

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

2o2a__assembly_1__model_1

2o2a__assembly_1__model_1 | I(q)

2o2a__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) 12 domains

SCOP 2.08 (8 domains)

CATH v4.4 (4 domains)

7. Citations (1)