SAXSdb — 3eaa

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

EvpC

Edwardsiella tarda

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
2	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	Q6EE19_EDWTA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–163； UniProt 1–163 Author chain B； PDBConstruct 1–163； UniProt 1–163

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	3eaa
Deposition date deposition_date	2008-08-25
Structure title title	Structure of a type six secretion system protein
Keywords keywords	EvpC, T6SS, UNKNOWN FUNCTION; 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.

3eaa__assembly_1__model_1

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

Download this curve (.dat)

3eaa__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3eaa__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	34.49 Å
Rg (electron density)	33.61 Å
Total Rg	34.26 Å
Atom count	7026
Residues	948
Excluded volume	123680 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3eaa__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3eaa__assembly_2__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) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d3eaaa_
Class class	b — All beta proteins
Fold Fold fold	b.157 — Hcp1-like
Superfamily Superfamily superfamily	b.157.1 — Hcp1-like
Family Family family	b.157.1.0 — automated matches

Domain ID domain_id	d3eaab_
Class class	b — All beta proteins
Fold Fold fold	b.157 — Hcp1-like
Superfamily Superfamily superfamily	b.157.1 — Hcp1-like
Family Family family	b.157.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id	3eaaA00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	110 — Pnp Oxidase; Chain A
Homologous superfamily homologous superfamily	20 — Hcp1-like

Domain ID domain_id	3eaaB00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	110 — Pnp Oxidase; Chain A
Homologous superfamily homologous superfamily	20 — Hcp1-like

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Unit-cell length a length_a	85.459 Å
Unit-cell length b length_b	85.459 Å
Unit-cell length c length_c	93.066 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	12

Space group space_group	P 6
Space-group number int_tables_number	168
Crystal system crystal_system	—

Resolution resolution	2.794 Å
Low-resolution limit resolution_low	28.963 Å
R factor r_factor	0.2410
R_work r_work	0.2380
R_free r_free	0.2840

Description description	EvpC
Molecular weight formula_weight	18123.7 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	2380

Structure of a type six secretion system protein

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

EvpC

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

3eaa__assembly_1__model_1

3eaa__assembly_1__model_1 | I(q)

3eaa__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Edwardsiella tarda
NCBI taxonomy ID ncbi_taxonomy_id	636
Host organism host_organism	Escherichia coli BL21

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	38

Structure of a type six secretion system protein

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

EvpC

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

3eaa__assembly_1__model_1

3eaa__assembly_1__model_1 | I(q)

3eaa__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)