SAXSdb — 1o7x

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

CITRATE SYNTHASE

SULFOLOBUS SOLFATARICUS

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CISY_SULSO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–377； UniProt 1–377 Author chain B； PDBConstruct 1–377； UniProt 1–377 Author chain C； PDBConstruct 1–377； UniProt 1–377 Author chain D； PDBConstruct 1–377； UniProt 1–377

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	1o7x
Deposition date deposition_date	2002-11-19
Structure title title	Citrate synthase from Sulfolobus solfataricus
Keywords keywords	SYNTHASE, LYASE, TRICARBOXYLIC ACID CYCLE; SYNTHASE
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.

1o7x__assembly_1__model_1

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

Download this curve (.dat)

1o7x__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1o7x__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.39 Å
Rg (electron density)	27.37 Å
Total Rg	28.14 Å
Atom count	5861
Residues	733
Excluded volume	105520 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1o7x__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1o7x__assembly_2__model_1`	dimeric （2）	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) 12 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1o7xa_
Class class	a — All alpha proteins
Fold Fold fold	a.103 — Citrate synthase
Superfamily Superfamily superfamily	a.103.1 — Citrate synthase
Family Family family	a.103.1.1 — Citrate synthase

Domain ID domain_id	d1o7xb_
Class class	a — All alpha proteins
Fold Fold fold	a.103 — Citrate synthase
Superfamily Superfamily superfamily	a.103.1 — Citrate synthase
Family Family family	a.103.1.1 — Citrate synthase

Domain ID domain_id	d1o7xc_
Class class	a — All alpha proteins
Fold Fold fold	a.103 — Citrate synthase
Superfamily Superfamily superfamily	a.103.1 — Citrate synthase
Family Family family	a.103.1.1 — Citrate synthase

Domain ID domain_id	d1o7xd_
Class class	a — All alpha proteins
Fold Fold fold	a.103 — Citrate synthase
Superfamily Superfamily superfamily	a.103.1 — Citrate synthase
Family Family family	a.103.1.1 — Citrate synthase

CATH v4.4 (8 domains)

Domain ID domain_id	1o7xA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	580 — Citrate Synthase; domain 1
Homologous superfamily homologous superfamily	10 — Citrate Synthase, domain 1

Domain ID domain_id	1o7xA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	230 — Cytochrome p450-Terp; domain 2
Homologous superfamily homologous superfamily	10 — Cytochrome P450-Terp, domain 2

Domain ID domain_id	1o7xB01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	580 — Citrate Synthase; domain 1
Homologous superfamily homologous superfamily	10 — Citrate Synthase, domain 1

Domain ID domain_id	1o7xB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	230 — Cytochrome p450-Terp; domain 2
Homologous superfamily homologous superfamily	10 — Cytochrome P450-Terp, domain 2

Domain ID domain_id	1o7xC01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	580 — Citrate Synthase; domain 1
Homologous superfamily homologous superfamily	10 — Citrate Synthase, domain 1

Domain ID domain_id	1o7xC02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	230 — Cytochrome p450-Terp; domain 2
Homologous superfamily homologous superfamily	10 — Cytochrome P450-Terp, domain 2

Domain ID domain_id	1o7xD01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	580 — Citrate Synthase; domain 1
Homologous superfamily homologous superfamily	10 — Citrate Synthase, domain 1

Domain ID domain_id	1o7xD02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	230 — Cytochrome p450-Terp; domain 2
Homologous superfamily homologous superfamily	10 — Cytochrome P450-Terp, domain 2

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Unit-cell length a length_a	77.340 Å
Unit-cell length b length_b	97.860 Å
Unit-cell length c length_c	119.330 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	107.60 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2080
R_work r_work	0.2080
R_free r_free	0.2850

Description description	CITRATE SYNTHASE
Molecular weight formula_weight	42806.1 kDa
EC 编号 ec_number	4.1.3.7
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	11738

Citrate synthase from Sulfolobus solfataricus

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

CITRATE SYNTHASE

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

1o7x__assembly_1__model_1

1o7x__assembly_1__model_1 | I(q)

1o7x__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) 12 domains

SCOP 2.08 (4 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Source organism organism	SULFOLOBUS SOLFATARICUS
NCBI taxonomy ID ncbi_taxonomy_id	2287
Host organism host_organism	ESCHERICHIA COLI

Citrate synthase from Sulfolobus solfataricus

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

CITRATE SYNTHASE

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

1o7x__assembly_1__model_1

1o7x__assembly_1__model_1 | I(q)

1o7x__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) 12 domains

SCOP 2.08 (4 domains)

CATH v4.4 (8 domains)

7. Citations (1)