SAXSdb — 2i3z

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

Dipeptidyl peptidase 4 (Dipeptidyl peptidase IV) (DPP IV)

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	2-[(3S)-3-AMINOPIPERIDIN-1-YL]-1-(2-CYANOBENZYL)-5-METHYL-4,6-DIOXO-3,4,5,6-TETRAHYDROPYRROLO[3,4-D]IMIDAZOL-1-IUM × 1	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 6	2-[(3S)-3-AMINOPIPERIDIN-1-YL]-1-(2-CYANOBENZYL)-5-METHYL-4,6-DIOXO-3,4,5,6-TETRAHYDROPYRROLO[3,4-D]IMIDAZOL-1-IUM × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DPP4_RAT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–730； UniProt 38–767 Author chain B； PDBConstruct 1–730； UniProt 38–767

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	2i3z
Deposition date deposition_date	2006-08-21
Structure title title	rat DPP-IV with xanthine mimetic inhibitor #7
Keywords keywords	enzyme, peptidase, 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.

2i3z__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2i3z__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2i3z__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	54.78 Å
Rg (electron density)	54.01 Å
Total Rg	54.44 Å
Atom count	35601
Residues	4380
Excluded volume	629830 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2i3z__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2i3z__assembly_2__model_1`	hexameric （6）	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)

Entity 1 Entity 1 polymer

Description description	Dipeptidyl peptidase 4 (Dipeptidyl peptidase IV) (DPP IV)
Molecular weight formula_weight	84337.6 kDa
EC 编号 ec_number	3.4.14.5
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	11867

RRTYTLADYLKNTFRVKSYSLRWVSDSEYLYKQENNILLFNAEHGNSSIFLENSTFEIFGDSISDYSVSPDRLFVLLEYNYVKQWRHSYTASYSIYDLNKRQLITEEKIPNNTQWITWSQEGHKLAYVWKNDIYVKIEPHLPSHRITSTGKENVIFNGINDWVYEEEIFGAYSALWWSPNGTFLAYAQFNDTGVPLIEYSFYSDESLQYPKTVWIPYPKAGAVNPTVKFFIVNTDSLSSTTTTIPMQITAPASVTTGDHYLCDVAWVSEDRISLQWLRRIQNYSVMAICDYDKTTLVWNCPTTQEHIETSATGWCGRFRPAEPHFTSDGSSFYKIVSDKDGYKHICQFQKDRKPEQVCTFITKGAWEVISIEALTSDYLYYISNEYKEMPGGRNLYKIQLTDHTNKKCLSCDLNPERCQYYSVSLSKEAKYYQLGCRGPGLPLYTLHRSTDQKELRVLEDNSALDKMLQDVQMPSKKLDFIVLNETRFWYQMILPPHFDKSKKYPLLIDVYAGPCSQKADAAFRLNWATYLASTENIIVASFDGRGSGYQGDKIMHAINKRLGTLEVEDQIEAARQFLKMGFVDSKRVAIWGWSYGGYVTSMVLGSGSGVFKCGIAVAPVSRWEYYDSVYTERYMGLPTPEDNLDHYRNSTVMSRAENFKQVEYLLIHGTADDNVHFQQSAQISKALVDAGVDFQAMWYTDEDHGIASSTAHQHIYSHMSHFLQQCFSLR

Entity 2 Entity 2 non-polymer

Description description	2-[(3S)-3-AMINOPIPERIDIN-1-YL]-1-(2-CYANOBENZYL)-5-METHYL-4,6-DIOXO-3,4,5,6-TETRAHYDROPYRROLO[3,4-D]IMIDAZOL-1-IUM
Molecular weight formula_weight	365.4 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2i3za1
Class class	b — All beta proteins
Fold Fold fold	b.70 — 8-bladed beta-propeller
Superfamily Superfamily superfamily	b.70.3 — DPP6 N-terminal domain-like
Family Family family	b.70.3.1 — DPP6 N-terminal domain-like

Domain ID domain_id	d2i3za2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.0 — automated matches

Domain ID domain_id	d2i3zb1
Class class	b — All beta proteins
Fold Fold fold	b.70 — 8-bladed beta-propeller
Superfamily Superfamily superfamily	b.70.3 — DPP6 N-terminal domain-like
Family Family family	b.70.3.1 — DPP6 N-terminal domain-like

Domain ID domain_id	d2i3zb2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.0 — automated matches

CATH v4.4 (4 domains)

Domain ID domain_id	2i3zA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

Domain ID domain_id	2i3zA02
Class class	2 — Mainly Beta
Architecture architecture	140 — 8 Propeller
Topology topology	10 — Methanol Dehydrogenase; Chain A
Homologous superfamily homologous superfamily	30 — Dipeptidylpeptidase IV, N-terminal domain

Domain ID domain_id	2i3zB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

Domain ID domain_id	2i3zB02
Class class	2 — Mainly Beta
Architecture architecture	140 — 8 Propeller
Topology topology	10 — Methanol Dehydrogenase; Chain A
Homologous superfamily homologous superfamily	30 — Dipeptidylpeptidase IV, N-terminal domain

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Unit-cell length a length_a	207.293 Å
Unit-cell length b length_b	207.293 Å
Unit-cell length c length_c	207.293 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	24

Space group space_group	P 21 3
Space-group number int_tables_number	198
Crystal system crystal_system	—

Resolution resolution	2.900 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	—
R_work r_work	0.2530
R_free r_free	0.2900

rat DPP-IV with xanthine mimetic inhibitor #7

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

Dipeptidyl peptidase 4 (Dipeptidyl peptidase IV) (DPP IV)

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

2i3z__assembly_2__model_1

2i3z__assembly_2__model_1 | I(q)

2i3z__assembly_2__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

rat DPP-IV with xanthine mimetic inhibitor #7

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

Dipeptidyl peptidase 4 (Dipeptidyl peptidase IV) (DPP IV)

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

2i3z__assembly_2__model_1

2i3z__assembly_2__model_1 | I(q)

2i3z__assembly_2__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)