SAXSdb — 1qxn

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

sulfide dehydrogenase

Wolinella succinogenes

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	PENTASULFIDE-SULFUR × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q56748_WOLSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–129； UniProt 21–149 Author chain B； PDBConstruct 1–129； UniProt 21–149

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	1qxn
Deposition date deposition_date	2003-09-08
Structure title title	Solution Structure of the 30 kDa Polysulfide-sulfur Transferase Homodimer from Wolinella Succinogenes
Keywords keywords	POLYSULFIDE-SULFUR TRANSFERASE, SUD, HOMODIMER, TRANSFERASE; TRANSFERASE
Experimental Method method	SOLUTION NMR

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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.

1qxn__assembly_1__model_5

Assembly 1 · Model 5 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1qxn__assembly_1__model_5 | I(q)

100 plotted points; both axes use logarithmic scales.

1qxn__assembly_1__model_5 | P(r) · Pending

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

Rg（Guinier）	20.67 Å
Rg (electron density)	19.59 Å
Total Rg	20.21 Å
Atom count	4338
Residues	274
Excluded volume	38583 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qxn__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`1qxn__assembly_1__model_2`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`1qxn__assembly_1__model_3`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`1qxn__assembly_1__model_4`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`1qxn__assembly_1__model_5`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`1qxn__assembly_1__model_6`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`1qxn__assembly_1__model_7`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`1qxn__assembly_1__model_8`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`1qxn__assembly_1__model_9`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`1qxn__assembly_1__model_10`	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 (2)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1qxna1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.46 — Rhodanese/Cell cycle control phosphatase
Superfamily Superfamily superfamily	c.46.1 — Rhodanese/Cell cycle control phosphatase
Family Family family	c.46.1.3 — Single-domain sulfurtransferase

Domain ID domain_id	d1qxna2
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

Domain ID domain_id	d1qxnb1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.46 — Rhodanese/Cell cycle control phosphatase
Superfamily Superfamily superfamily	c.46.1 — Rhodanese/Cell cycle control phosphatase
Family Family family	c.46.1.3 — Single-domain sulfurtransferase

Domain ID domain_id	d1qxnb2
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 (2 domains)

Domain ID domain_id	1qxnA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	250 — Oxidized Rhodanese; domain 1
Homologous superfamily homologous superfamily	10 — Rhodanese-like domain

Domain ID domain_id	1qxnB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	250 — Oxidized Rhodanese; domain 1
Homologous superfamily homologous superfamily	10 — Rhodanese-like domain

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Description description	sulfide dehydrogenase
Molecular weight formula_weight	15357.7 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	43380

Source organism organism	Wolinella succinogenes
NCBI taxonomy ID ncbi_taxonomy_id	844
Host organism host_organism	Escherichia coli

Description description	PENTASULFIDE-SULFUR
Molecular weight formula_weight	160.3 kDa
Source method src_method	syn
Copy count entity_count	2

Solution Structure of the 30 kDa Polysulfide-sulfur Transferase Homodimer from Wolinella Succinogenes

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

sulfide dehydrogenase

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

1qxn__assembly_1__model_5

1qxn__assembly_1__model_5 | I(q)

1qxn__assembly_1__model_5 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Solution Structure of the 30 kDa Polysulfide-sulfur Transferase Homodimer from Wolinella Succinogenes

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

sulfide dehydrogenase

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

1qxn__assembly_1__model_5

1qxn__assembly_1__model_5 | I(q)

1qxn__assembly_1__model_5 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)