SAXSdb — 1fb0

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

THIOREDOXIN M

Spinacia oleracea

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TRXM_SPIOL
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–105； UniProt 75–179 Author chain B； PDBConstruct 1–105； UniProt 75–179

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	1fb0
Deposition date deposition_date	2000-07-14
Structure title title	CRYSTAL STRUCTURE OF THIOREDOXIN M FROM SPINACH CHLOROPLAST (REDUCED FORM)
Keywords keywords	ELECTRON TRANSPORT; ELECTRON TRANSPORT
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.

1fb0__assembly_1__model_1

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

Download this curve (.dat)

1fb0__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1fb0__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	14.30 Å
Rg (electron density)	12.70 Å
Total Rg	14.16 Å
Atom count	831
Residues	105
Excluded volume	14981 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1fb0__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1fb0__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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1fb0a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.1 — Thioltransferase

Domain ID domain_id	d1fb0b_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.47 — Thioredoxin fold
Superfamily Superfamily superfamily	c.47.1 — Thioredoxin-like
Family Family family	c.47.1.1 — Thioltransferase

CATH v4.4 (2 domains)

Domain ID domain_id	1fb0A00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

Domain ID domain_id	1fb0B00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	30 — Glutaredoxin
Homologous superfamily homologous superfamily	10 — Glutaredoxin

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Unit-cell length a length_a	74.600 Å
Unit-cell length b length_b	74.600 Å
Unit-cell length c length_c	74.260 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	2.260 Å
Low-resolution limit resolution_low	26.400 Å
R factor r_factor	—
R_work r_work	0.1980
R_free r_free	0.2350

Description description	THIOREDOXIN M
Molecular weight formula_weight	11793.4 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	1766

CRYSTAL STRUCTURE OF THIOREDOXIN M FROM SPINACH CHLOROPLAST (REDUCED FORM)

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

THIOREDOXIN M

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

1fb0__assembly_1__model_1

1fb0__assembly_1__model_1 | I(q)

1fb0__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	Spinacia oleracea
Common name common_name	spinach
NCBI taxonomy ID ncbi_taxonomy_id	3562
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	113

CRYSTAL STRUCTURE OF THIOREDOXIN M FROM SPINACH CHLOROPLAST (REDUCED FORM)

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

THIOREDOXIN M

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

1fb0__assembly_1__model_1

1fb0__assembly_1__model_1 | I(q)

1fb0__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)