SAXSdb — 3azc

▼

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

Cytochrome b6-f complex iron-sulfur subunit

Thermosynechococcus elongatus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	FE2/S2 (INORGANIC) CLUSTER × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UCRI_THEEB
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 7–133； UniProt 54–180

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	3azc
Deposition date deposition_date	2011-05-23
Structure title title	Crystal structure of the soluble part of cytochrome b6f complex iron-sulfur subunit from Thermosynechococcus elongatus BP-1
Keywords keywords	;Rieske, cytochrome b6f complex, Thermosynechococcus elongatus, photosynthesis, electron transport, thylakoid membrane, OXIDOREDUCTASE ;; OXIDOREDUCTASE
Experimental Method method	X-RAY DIFFRACTION

▼

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.

3azc__assembly_1__model_1

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

Download this curve (.dat)

3azc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3azc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.67 Å
Rg (electron density)	14.42 Å
Total Rg	15.69 Å
Atom count	1036
Residues	133
Excluded volume	18412 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3azc__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Cytochrome b6-f complex iron-sulfur subunit
Molecular weight formula_weight	14645.6 kDa
EC 编号 ec_number	1.10.99.1
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1145

HHIEGRAVAKDALGNDIKVSEYLAKHLPGDRSLAQGIKGDPTYVIVTEDHQIANYGLNAVCTHLGCVVPWNVSENKFICPCHGSQYDSTGKVVRGPAPLSLALVKATVTEDDKLVFTPWTEIDFRTGKEPWWT

Source Source

Source organism organism	Thermosynechococcus elongatus
NCBI taxonomy ID ncbi_taxonomy_id	197221
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	FE2/S2 (INORGANIC) CLUSTER
Molecular weight formula_weight	175.8 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	98

▼

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d3azca1
Class class	b — All beta proteins
Fold Fold fold	b.33 — ISP domain
Superfamily Superfamily superfamily	b.33.1 — ISP domain
Family Family family	b.33.1.1 — Rieske iron-sulfur protein (ISP)

Domain ID domain_id	d3azca2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (1 domains)

Domain ID domain_id	3azcA00
Class class	2 — Mainly Beta
Architecture architecture	102 — 3-layer Sandwich
Topology topology	10 — Rieske Iron-sulfur Protein
Homologous superfamily homologous superfamily	10 — Rieske [2Fe-2S] iron-sulphur domain

▶

Unit-cell length a length_a	91.324 Å
Unit-cell length b length_b	91.324 Å
Unit-cell length c length_c	43.342 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	6

Space group space_group	P 65
Space-group number int_tables_number	170
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	24.610 Å
R factor r_factor	—
R_work r_work	0.1970
R_free r_free	0.2360

Crystal structure of the soluble part of cytochrome b6f complex iron-sulfur subunit from Thermosynechococcus elongatus BP-1

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

Cytochrome b6-f complex iron-sulfur subunit

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

3azc__assembly_1__model_1

3azc__assembly_1__model_1 | I(q)

3azc__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Crystal structure of the soluble part of cytochrome b6f complex iron-sulfur subunit from Thermosynechococcus elongatus BP-1

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

Cytochrome b6-f complex iron-sulfur subunit

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

3azc__assembly_1__model_1

3azc__assembly_1__model_1 | I(q)

3azc__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

CATH v4.4 (1 domains)

7. Citations (1)