2w9p

Crystal Structure of Potato Multicystatin

Method: X-RAY DIFFRACTION

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

MULTICYSTATIN

SOLANUM TUBEROSUM

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
10	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
11	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
12	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
13	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
14	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
3	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
4	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
5	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
6	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
7	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
8	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count
9	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CYTM_SOLTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–87； UniProt 100–186 Author chain B； PDBConstruct 1–87； UniProt 100–186 Author chain C； PDBConstruct 1–87； UniProt 100–186 Author chain D； PDBConstruct 1–87； UniProt 100–186 Author chain E； PDBConstruct 1–87； UniProt 100–186 Author chain F； PDBConstruct 1–87； UniProt 100–186 Author chain G； PDBConstruct 1–87； UniProt 100–186 Author chain H； PDBConstruct 1–87； UniProt 100–186 Author chain I； PDBConstruct 1–87； UniProt 100–186 Author chain J； PDBConstruct 1–87； UniProt 100–186 Author chain K； PDBConstruct 1–87； UniProt 100–186 Author chain L； PDBConstruct 1–87； UniProt 100–186 Author chain M； PDBConstruct 1–87； UniProt 100–186 Author chain N； PDBConstruct 1–87； UniProt 100–186

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	2w9p
Deposition date deposition_date	2009-01-28
Structure title title	Crystal Structure of Potato Multicystatin
Keywords keywords	PROTEASE INHIBITOR, THIOL PROTEASE INHIBITOR, HYDROLASE INHIBITOR; HYDROLASE INHIBITOR
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.

2w9p__assembly_4__model_1

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

Download this curve (.dat)

2w9p__assembly_4__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2w9p__assembly_4__model_1 | P(r) · Pending

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

Rg（Guinier）	14.23 Å
Rg (electron density)	12.89 Å
Total Rg	14.28 Å
Atom count	717
Residues	87
Excluded volume	12980 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2w9p__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2w9p__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2w9p__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`2w9p__assembly_4__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`2w9p__assembly_5__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
6	1	`2w9p__assembly_6__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
7	1	`2w9p__assembly_7__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
8	1	`2w9p__assembly_8__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
9	1	`2w9p__assembly_9__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
10	1	`2w9p__assembly_10__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
11	1	`2w9p__assembly_11__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
12	1	`2w9p__assembly_12__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
13	1	`2w9p__assembly_13__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
14	1	`2w9p__assembly_14__model_1`	monomeric （1）	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) 28 domains

SCOP 2.08 (14 domains)

Domain ID domain_id	d2w9pa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pd_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pe_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pf_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pg_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9ph_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pi_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pj_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pk_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pl_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pm_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

Domain ID domain_id	d2w9pn_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.1 — Cystatin/monellin
Family Family family	d.17.1.0 — automated matches

CATH v4.4 (14 domains)

Domain ID domain_id	2w9pA00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pB00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pC00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pD00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pE00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pF00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pG00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pH00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pI00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pJ00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pK00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pL00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pM00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w9pN00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	210.850 Å
Unit-cell length b length_b	85.710 Å
Unit-cell length c length_c	96.860 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	100.60 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	56

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

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.2120
R_work r_work	0.2120
R_free r_free	0.2460

Description description	MULTICYSTATIN
Molecular weight formula_weight	10147.7 kDa
Source method src_method	man
Copy count entity_count	14

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H,I,J,K,L,M,N
Atom count atom_count	10038

Crystal Structure of Potato Multicystatin

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

MULTICYSTATIN

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

2w9p__assembly_4__model_1

2w9p__assembly_4__model_1 | I(q)

2w9p__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 28 domains

SCOP 2.08 (14 domains)

CATH v4.4 (14 domains)

7. Citations (1)

Source organism organism	SOLANUM TUBEROSUM
Common name common_name	POTATO
NCBI taxonomy ID ncbi_taxonomy_id	4113
Host organism host_organism	ESCHERICHIA COLI

Crystal Structure of Potato Multicystatin

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

MULTICYSTATIN

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

2w9p__assembly_4__model_1

2w9p__assembly_4__model_1 | I(q)

2w9p__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 28 domains

SCOP 2.08 (14 domains)

CATH v4.4 (14 domains)

7. Citations (1)