SAXSdb — 1sez

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

Protoporphyrinogen oxidase, mitochondrial

Nicotiana tabacum

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	FLAVIN-ADENINE DINUCLEOTIDE × 2 4-BROMO-3-(5'-CARBOXY-4'-CHLORO-2'-FLUOROPHENYL)-1-METHYL-5-TRIFLUOROMETHYL-PYRAZOL × 2 2-{2-[4-(1,1,3,3-TETRAMETHYLBUTYL)PHENOXY]ETHOXY}ETHANOL × 2 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	FLAVIN-ADENINE DINUCLEOTIDE × 4 4-BROMO-3-(5'-CARBOXY-4'-CHLORO-2'-FLUOROPHENYL)-1-METHYL-5-TRIFLUOROMETHYL-PYRAZOL × 4 2-{2-[4-(1,1,3,3-TETRAMETHYLBUTYL)PHENOXY]ETHOXY}ETHANOL × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PPOM_TOBAC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–504； UniProt 1–504 Author chain B； PDBConstruct 1–504； UniProt 1–504

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	1sez
Deposition date deposition_date	2004-02-19
Structure title title	Crystal Structure of Protoporphyrinogen IX Oxidase
Keywords keywords	FAD-binding, Para-hydroxy-benzoate-hydroxylase fold (PHBH-fold), monotopic membrane-binding domain, OXIDOREDUCTASE; 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.

1sez__assembly_1__model_1

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

Download this curve (.dat)

1sez__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1sez__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	37.36 Å
Rg (electron density)	36.83 Å
Total Rg	37.16 Å
Atom count	7152
Residues	912
Excluded volume	127440 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1sez__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1sez__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 (5)

Entity 1 Entity 1 polymer

Description description	Protoporphyrinogen oxidase, mitochondrial
Molecular weight formula_weight	55902.1 kDa
EC 编号 ec_number	1.3.3.4
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	7295

MAPSAGEDKHSSAKRVAVIGAGVSGLAAAYKLKIHGLNVTVFEAEGKAGGKLRSVSQDGLIWDEGANTMTESEGDVTFLIDSLGLREKQQFPLSQNKRYIARNGTPVLLPSNPIDLIKSNFLSTGSKLQMLLEPILWKNKKLSQVSDSHESVSGFFQRHFGKEVVDYLIDPFVAGTCGGDPDSLSMHHSFPELWNLEKRFGSVILGAIRSKLSPKNEKKQGPPKTSANKKRQRGSFSFLGGMQTLTDAICKDLREDELRLNSRVLELSCSCTEDSAIDSWSIISASPHKRQSEEESFDAVIMTAPLCDVKSMKIAKRGNPFLLNFIPEVDYVPLSVVITTFKRENVKYPLEGFGVLVPSKEQQHGLKTLGTLFSSMMFPDRAPNNVYLYTTFVGGSRNRELAKASRTELKEIVTSDLKQLLGAEGEPTYVNHLYWSKAFPLYGHNYDSVLDAIDKMEKNLPGLFYAGNHRGGLSVGKALSSGCNAADLVISYLESVSTDSKRHC

Source Source

Source organism organism	Nicotiana tabacum
Common name common_name	common tobacco
NCBI taxonomy ID ncbi_taxonomy_id	4097
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	FLAVIN-ADENINE DINUCLEOTIDE
Molecular weight formula_weight	785.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	4-BROMO-3-(5'-CARBOXY-4'-CHLORO-2'-FLUOROPHENYL)-1-METHYL-5-TRIFLUOROMETHYL-PYRAZOL
Molecular weight formula_weight	401.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	2-{2-[4-(1,1,3,3-TETRAMETHYLBUTYL)PHENOXY]ETHOXY}ETHANOL
Molecular weight formula_weight	294.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	143

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6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1seza1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.3 — FAD/NAD(P)-binding domain
Superfamily Superfamily superfamily	c.3.1 — FAD/NAD(P)-binding domain
Family Family family	c.3.1.2 — FAD-linked reductases, N-terminal domain

Domain ID domain_id	d1seza2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.16 — FAD-linked reductases, C-terminal domain
Superfamily Superfamily superfamily	d.16.1 — FAD-linked reductases, C-terminal domain
Family Family family	d.16.1.5 — L-aminoacid/polyamine oxidase

Domain ID domain_id	d1sezb1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.3 — FAD/NAD(P)-binding domain
Superfamily Superfamily superfamily	c.3.1 — FAD/NAD(P)-binding domain
Family Family family	c.3.1.2 — FAD-linked reductases, N-terminal domain

Domain ID domain_id	d1sezb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.16 — FAD-linked reductases, C-terminal domain
Superfamily Superfamily superfamily	d.16.1 — FAD-linked reductases, C-terminal domain
Family Family family	d.16.1.5 — L-aminoacid/polyamine oxidase

CATH v4.4 (6 domains)

Domain ID domain_id	1sezA01
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	50 — FAD/NAD(P)-binding domain
Homologous superfamily homologous superfamily	60 — FAD/NAD(P)-binding domain

Domain ID domain_id	1sezA02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	660 — Polyamine Oxidase; Chain A, domain 2
Homologous superfamily homologous superfamily	20 — Protoporphyrinogen oxidase, mitochondrial; domain 2

Domain ID domain_id	1sezA03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	3110 — protoporphyrinogen ix oxidase, domain 3
Homologous superfamily homologous superfamily	10 — protoporphyrinogen ix oxidase, domain 3

Domain ID domain_id	1sezB01
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	50 — FAD/NAD(P)-binding domain
Homologous superfamily homologous superfamily	60 — FAD/NAD(P)-binding domain

Domain ID domain_id	1sezB02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	660 — Polyamine Oxidase; Chain A, domain 2
Homologous superfamily homologous superfamily	20 — Protoporphyrinogen oxidase, mitochondrial; domain 2

Domain ID domain_id	1sezB03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	3110 — protoporphyrinogen ix oxidase, domain 3
Homologous superfamily homologous superfamily	10 — protoporphyrinogen ix oxidase, domain 3

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Unit-cell length a length_a	119.090 Å
Unit-cell length b length_b	147.250 Å
Unit-cell length c length_c	127.040 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	16

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.900 Å
Low-resolution limit resolution_low	19.730 Å
R factor r_factor	0.2500
R_work r_work	0.2270
R_free r_free	0.2930

Crystal Structure of Protoporphyrinogen IX Oxidase

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

Protoporphyrinogen oxidase, mitochondrial

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

1sez__assembly_1__model_1

1sez__assembly_1__model_1 | I(q)

1sez__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal Structure of Protoporphyrinogen IX Oxidase

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

Protoporphyrinogen oxidase, mitochondrial

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

1sez__assembly_1__model_1

1sez__assembly_1__model_1 | I(q)

1sez__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (1)