1sox

SULFITE OXIDASE FROM CHICKEN LIVER

Method: X-RAY DIFFRACTION

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

SULFITE OXIDASE

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	SULFATE ION × 4 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 2 MOLYBDENUM ATOM × 2 PROTOPORPHYRIN IX CONTAINING FE × 2 GLYCEROL × 1 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SUOX_CHICK
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–459； UniProt 1–460 Author chain B； PDBConstruct 1–459； UniProt 1–460

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	1sox
Deposition date deposition_date	1997-12-31
Structure title title	SULFITE OXIDASE FROM CHICKEN LIVER
Keywords keywords	OXIDOREDUCTASE, SULFITE OXIDATION; OXIDOREDUCTASE
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.

1sox__assembly_1__model_1

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

Download this curve (.dat)

1sox__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1sox__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	31.74 Å
Rg (electron density)	31.46 Å
Total Rg	31.79 Å
Atom count	7306
Residues	921
Excluded volume	128640 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1sox__assembly_1__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 (8)

Entity 1 Entity 1 polymer

Description description	SULFITE OXIDASE
Molecular weight formula_weight	51001.2 kDa
EC 编号 ec_number	1.8.3.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	8189

APSYPEYTREEVGRHRSPEERVWVTHGTDVFDVTDFVELHPGGPDKILLAAGGALEPFWALYAVHGEPHVLELLQQYKVGELSPDEAPAAPDAQDPFAGDPPRHPGLRVNSQKPFNAEPPAELLAERFLTPNELFFTRNHLPVPAVEPSSYRLRVDGPGGGTLSLSLAELRSRFPKHEVTATLQCAGNRRSEMSRVRPVKGLPWDIGAISTARWGGARLRDVLLHAGFPEELQGEWHVCFEGLDADPGGAPYGASIPYGRALSPAADVLLAYEMNGTELPRDHGFPVRVVVPGVVGARSVKWLRRVAVSPDESPSHWQQNDYKGFSPCVDWDTVDYRTAPAIQELPVQSAVTQPRPGAAVPPGELTVKGYAWSGGGREVVRVDVSLDGGRTWKVARLMGDKAPPGRAWAWALWELTVPVEAGTELEIVCKAVDSSYNVQPDSVAPIWNLRGVLSTAWHRVRVSVQD

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER
Molecular weight formula_weight	395.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	MOLYBDENUM ATOM
Molecular weight formula_weight	95.9 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 non-polymer

Description description	PROTOPORPHYRIN IX CONTAINING FE
Molecular weight formula_weight	616.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 6 Entity 6 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 non-polymer

Description description	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
Molecular weight formula_weight	238.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 8 Entity 8 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	822

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1soxa1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.18 — E set domains
Family Family family	b.1.18.6 — Molybdenum-containing oxidoreductases-like dimerisation domain

Domain ID domain_id	d1soxa2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.120 — Cytochrome b5-like heme/steroid binding domain
Superfamily Superfamily superfamily	d.120.1 — Cytochrome b5-like heme/steroid binding domain
Family Family family	d.120.1.1 — Cytochrome b5

Domain ID domain_id	d1soxa3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.176 — Oxidoreductase molybdopterin-binding domain
Superfamily Superfamily superfamily	d.176.1 — Oxidoreductase molybdopterin-binding domain
Family Family family	d.176.1.1 — Oxidoreductase molybdopterin-binding domain

Domain ID domain_id	d1soxb1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.18 — E set domains
Family Family family	b.1.18.6 — Molybdenum-containing oxidoreductases-like dimerisation domain

Domain ID domain_id	d1soxb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.120 — Cytochrome b5-like heme/steroid binding domain
Superfamily Superfamily superfamily	d.120.1 — Cytochrome b5-like heme/steroid binding domain
Family Family family	d.120.1.1 — Cytochrome b5

Domain ID domain_id	d1soxb3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.176 — Oxidoreductase molybdopterin-binding domain
Superfamily Superfamily superfamily	d.176.1 — Oxidoreductase molybdopterin-binding domain
Family Family family	d.176.1.1 — Oxidoreductase molybdopterin-binding domain

CATH v4.4 (6 domains)

Domain ID domain_id	1soxA01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	120 — Flavocytochrome B2; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Cytochrome b5-like heme/steroid binding domain

Domain ID domain_id	1soxA02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	420 — Sulfite Oxidase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Oxidoreductase, molybdopterin-binding domain

Domain ID domain_id	1soxA03
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	650 —

Domain ID domain_id	1soxB01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	120 — Flavocytochrome B2; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Cytochrome b5-like heme/steroid binding domain

Domain ID domain_id	1soxB02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	420 — Sulfite Oxidase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Oxidoreductase, molybdopterin-binding domain

Domain ID domain_id	1soxB03
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	650 —

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Unit-cell length a length_a	55.117 Å
Unit-cell length b length_b	197.690 Å
Unit-cell length c length_c	56.009 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	94.23 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

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

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.1748
R_work r_work	0.1748
R_free r_free	0.2200

SULFITE OXIDASE FROM CHICKEN LIVER

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

SULFITE OXIDASE

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

1sox__assembly_1__model_1

1sox__assembly_1__model_1 | I(q)

1sox__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 (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)

SULFITE OXIDASE FROM CHICKEN LIVER

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

SULFITE OXIDASE

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

1sox__assembly_1__model_1

1sox__assembly_1__model_1 | I(q)

1sox__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 (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)