SAXSdb — 3cuc

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

Protein of unknown function with a Fic domain

Bacteroides thetaiotaomicron VPI-5482

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8A4T4_BACTN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–291； UniProt 1–290 Author chain B； PDBConstruct 2–291； UniProt 1–290

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	3cuc
Deposition date deposition_date	2008-04-16
Structure title title	CRYSTAL STRUCTURE OF A FIC DOMAIN CONTAINING SIGNALING PROTEIN (BT_2513) FROM BACTEROIDES THETAIOTAOMICRON VPI-5482 AT 2.71 A RESOLUTION
Keywords keywords	;FIC PROTEIN FAMILY, STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI-2, SIGNALING PROTEIN ;; SIGNALING 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.

3cuc__assembly_2__model_1

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

Download this curve (.dat)

3cuc__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3cuc__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	19.35 Å
Rg (electron density)	18.30 Å
Total Rg	19.22 Å
Atom count	2149
Residues	263
Excluded volume	38337 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3cuc__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3cuc__assembly_2__model_1`	monomeric （1）	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 (1)

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3cucA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	3290 — Fic-like fold
Homologous superfamily homologous superfamily	10 — Fido-like domain

Domain ID domain_id	3cucB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	3290 — Fic-like fold
Homologous superfamily homologous superfamily	10 — Fido-like domain

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Unit-cell length a length_a	138.725 Å
Unit-cell length b length_b	138.725 Å
Unit-cell length c length_c	120.723 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 31 2 1
Space-group number int_tables_number	152
Crystal system crystal_system	—

Resolution resolution	2.710 Å
Low-resolution limit resolution_low	29.273 Å
R factor r_factor	0.2240
R_work r_work	0.2220
R_free r_free	0.2480

Description description	Protein of unknown function with a Fic domain
Molecular weight formula_weight	33574.0 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	4226

CRYSTAL STRUCTURE OF A FIC DOMAIN CONTAINING SIGNALING PROTEIN (BT_2513) FROM BACTEROIDES THETAIOTAOMICRON VPI-5482 AT 2.71 A RESOLUTION

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

Protein of unknown function with a Fic domain

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

3cuc__assembly_2__model_1

3cuc__assembly_2__model_1 | I(q)

3cuc__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Bacteroides thetaiotaomicron VPI-5482
NCBI taxonomy ID ncbi_taxonomy_id	226186
Host organism host_organism	Escherichia coli

CRYSTAL STRUCTURE OF A FIC DOMAIN CONTAINING SIGNALING PROTEIN (BT_2513) FROM BACTEROIDES THETAIOTAOMICRON VPI-5482 AT 2.71 A RESOLUTION

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

Protein of unknown function with a Fic domain

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

3cuc__assembly_2__model_1

3cuc__assembly_2__model_1 | I(q)

3cuc__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)