SAXSdb — 1b71

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

PROTEIN (RUBRERYTHRIN)

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	FE (III) ION × 4 ZINC ION × 2 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	FE (III) ION × 8 ZINC ION × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RUBY_DESVH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–191； UniProt 1–191

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	1b71
Deposition date deposition_date	1999-01-26
Structure title title	RUBRERYTHRIN
Keywords keywords	ELECTRON TRANSPORT, IRON, FERROXIDASE; 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.

1b71__assembly_1__model_1

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

Download this curve (.dat)

1b71__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1b71__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.10 Å
Rg (electron density)	23.39 Å
Total Rg	24.22 Å
Atom count	3050
Residues	382
Excluded volume	53685 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1b71__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1b71__assembly_2__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 (4)

Entity 1 Entity 1 polymer

Description description	PROTEIN (RUBRERYTHRIN)
Molecular weight formula_weight	21577.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1732

MKSLKGSRTEKNILTAFAGESQARNRYNYFGGQAKKDGFVQISDIFAETADQEREHAKRLFKFLEGGDLEIVAAFPAGIIADTHANLIASAAGEHHEYTEMYPSFARIAREEGYEEIARVFASIAVAEEFHEKRFLDFARNIKEGRVFLREQATKWRCRNCGYVHEGTGAPELCPACAHPKAHFELLGINW

Entity 2 Entity 2 non-polymer

Description description	FE (III) ION
Molecular weight formula_weight	55.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	171

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1b71a1
Class class	a — All alpha proteins
Fold Fold fold	a.25 — Ferritin-like
Superfamily Superfamily superfamily	a.25.1 — Ferritin-like
Family Family family	a.25.1.1 — Ferritin

Domain ID domain_id	d1b71a2
Class class	g — Small proteins
Fold Fold fold	g.41 — Rubredoxin-like
Superfamily Superfamily superfamily	g.41.5 — Rubredoxin-like
Family Family family	g.41.5.1 — Rubredoxin

CATH v4.4 (2 domains)

Domain ID domain_id	1b71A01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1260 — Ferritin
Homologous superfamily homologous superfamily	10 — Ferritin, core subunit, four-helix bundle

Domain ID domain_id	1b71A02
Class class	2 — Mainly Beta
Architecture architecture	20 — Single Sheet
Topology topology	28 — Rubrerythrin, domain 2
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	49.300 Å
Unit-cell length b length_b	81.300 Å
Unit-cell length c length_c	100.100 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	8

Space group space_group	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1950
R_work r_work	—
R_free r_free	—

RUBRERYTHRIN

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

PROTEIN (RUBRERYTHRIN)

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

1b71__assembly_1__model_1

1b71__assembly_1__model_1 | I(q)

1b71__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

RUBRERYTHRIN

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

PROTEIN (RUBRERYTHRIN)

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

1b71__assembly_1__model_1

1b71__assembly_1__model_1 | I(q)

1b71__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)