1pju

Unbound form of Tomato Inhibitor-II

Method: X-RAY DIFFRACTION

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

Wound-induced proteinase inhibitor II

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	SULFATE ION × 2 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	SULFATE ION × 2 water × 1	Consistent with protein count
3	Protein monomer	Monomer	Protein 1	SULFATE ION × 2 water × 1	Consistent with protein count
4	Protein monomer	Monomer	Protein 1	SULFATE ION × 2 water × 1	Consistent with protein count
5	Protein homooligomer	Homooligomer	Protein 4	SULFATE ION × 8 water × 4	Consistent with protein count
6	Protein homooligomer	Homooligomer	Protein 4	SULFATE ION × 8 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	IP21_LYCES
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–123； UniProt 26–148 Author chain B； PDBConstruct 1–123； UniProt 26–148 Author chain C； PDBConstruct 1–123； UniProt 26–148 Author chain D； PDBConstruct 1–123； UniProt 26–148

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	1pju
Deposition date deposition_date	2003-06-03
Structure title title	Unbound form of Tomato Inhibitor-II
Keywords keywords	Proteinase inhibitor, HYDROLASE; HYDROLASE
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.

1pju__assembly_4__model_1

Assembly 4 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1pju__assembly_4__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1pju__assembly_4__model_1 | P(r) · Pending

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

Rg（Guinier）	15.93 Å
Rg (electron density)	15.30 Å
Total Rg	16.26 Å
Atom count	867
Residues	114
Excluded volume	15099 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1pju__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1pju__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1pju__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`1pju__assembly_4__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`1pju__assembly_5__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
6	1	`1pju__assembly_6__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 (3)

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6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d1pjua1
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

Domain ID domain_id	d1pjua2
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

Domain ID domain_id	d1pjub1
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

Domain ID domain_id	d1pjub2
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

Domain ID domain_id	d1pjuc1
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

Domain ID domain_id	d1pjuc2
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

Domain ID domain_id	d1pjud1
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

Domain ID domain_id	d1pjud2
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

CATH v4.4 (8 domains)

Domain ID domain_id	1pjuA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1pjuA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1pjuB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1pjuB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1pjuC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1pjuC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1pjuD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1pjuD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

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Unit-cell length a length_a	58.688 Å
Unit-cell length b length_b	106.607 Å
Unit-cell length c length_c	81.804 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	104.12 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.150 Å
Low-resolution limit resolution_low	39.530 Å
R factor r_factor	0.2079
R_work r_work	0.2057
R_free r_free	0.2498

Description description	Wound-induced proteinase inhibitor II
Molecular weight formula_weight	13468.3 kDa
Source method src_method	nat
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	3647

Unbound form of Tomato Inhibitor-II

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

Wound-induced proteinase inhibitor II

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

1pju__assembly_4__model_1

1pju__assembly_4__model_1 | I(q)

1pju__assembly_4__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

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	8

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	175

Unbound form of Tomato Inhibitor-II

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

Wound-induced proteinase inhibitor II

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

1pju__assembly_4__model_1

1pju__assembly_4__model_1 | I(q)

1pju__assembly_4__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

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)