SAXSdb — 2fql

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

Frataxin homolog, mitochondrial

Saccharomyces cerevisiae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FRDA_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–123； UniProt 52–174

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	2fql
Deposition date deposition_date	2006-01-18
Structure title title	Crystal structure of trimeric frataxin from the yeast Saccharomyces cerevisiae
Keywords keywords	ALPHA/BETA SANDWICH, METALLOCHAPERONE, IRON-STORAGE, TRANSPORT PROTEIN; TRANSPORT 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.

2fql__assembly_1__model_1

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

Download this curve (.dat)

2fql__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2fql__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.93 Å
Rg (electron density)	24.18 Å
Total Rg	24.99 Å
Atom count	2649
Residues	336
Excluded volume	47136 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2fql__assembly_1__model_1`	trimeric （3）	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

SCOP 2.08 (1 domains)

Domain ID domain_id	d2fqla1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.82 — N domain of copper amine oxidase-like
Superfamily Superfamily superfamily	d.82.2 — Frataxin/Nqo15-like
Family Family family	d.82.2.1 — Frataxin-like

CATH v4.4 (1 domains)

Domain ID domain_id	2fqlA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	920 — Metal Transport, Frataxin; Chain A
Homologous superfamily homologous superfamily	10 — Frataxin/CyaY

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Unit-cell length a length_a	121.220 Å
Unit-cell length b length_b	121.220 Å
Unit-cell length c length_c	121.220 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	24

Space group space_group	I 21 3
Space-group number int_tables_number	199
Crystal system crystal_system	—

Resolution resolution	3.010 Å
Low-resolution limit resolution_low	19.740 Å
R factor r_factor	0.2860
R_work r_work	0.2860
R_free r_free	0.3050

Description description	Frataxin homolog, mitochondrial
Molecular weight formula_weight	13671.2 kDa
Mutation mutation	Y73A
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	883

Crystal structure of trimeric frataxin from the yeast Saccharomyces cerevisiae

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

Frataxin homolog, mitochondrial

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

2fql__assembly_1__model_1

2fql__assembly_1__model_1 | I(q)

2fql__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Source organism organism	Saccharomyces cerevisiae
Common name common_name	;baker's yeast ;
NCBI taxonomy ID ncbi_taxonomy_id	4932
Host organism host_organism	Escherichia coli

Crystal structure of trimeric frataxin from the yeast Saccharomyces cerevisiae

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

Frataxin homolog, mitochondrial

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

2fql__assembly_1__model_1

2fql__assembly_1__model_1 | I(q)

2fql__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)