SAXSdb — 1igb

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

AMINOPEPTIDASE

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	ZINC ION × 4 PARA-IODO-D-PHENYLALANINE HYDROXAMIC ACID × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	AMPX_VIBPR
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–291； UniProt 107–397

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	1igb
Deposition date deposition_date	1996-02-27
Structure title title	AEROMONAS PROTEOLYTICA AMINOPEPTIDASE COMPLEXED WITH THE INHIBITOR PARA-IODO-D-PHENYLALANINE HYDROXAMATE
Keywords keywords	HYDROLASE, AMINOPEPTIDASE; AMINOPEPTIDASE
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.

1igb__assembly_1__model_1

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

Download this curve (.dat)

1igb__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1igb__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.01 Å
Rg (electron density)	25.21 Å
Total Rg	26.01 Å
Atom count	5428
Residues	582
Excluded volume	77975 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1igb__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 (4)

Entity 1 Entity 1 polymer

Description description	AMINOPEPTIDASE
Molecular weight formula_weight	31427.3 kDa
EC 编号 ec_number	3.4.11.10
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	3374

MPPITQQATVTAWLPQVDASQITGTISSLESFTNRFYTTTSGAQASDWIASEWQALSASLPNASVKQVSHSGYNQKSVVMTITGSEAPDEWIVIGGHLDSTIGSHTNEQSVAPGADDDASGIAAVTEVIRVLSENNFQPKRSIAFMAYAAEEVGLRGSQDLANQYKSEGKNVVSALQLDMTNYKGSAQDVVFITDYTDSNFTQYLTQLMDEYLPSLTYGFDTCGYACSDHASWHNAGYPAAMPFESKFNDYNPRIHTTQDTLANSDPTGSHAKKFTQLGLAYAIEMGSATG

Entity 2 Entity 2 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	PARA-IODO-D-PHENYLALANINE HYDROXAMIC ACID
Molecular weight formula_weight	306.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	220

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1igba_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.56 — Phosphorylase/hydrolase-like
Superfamily Superfamily superfamily	c.56.5 — Zn-dependent exopeptidases
Family Family family	c.56.5.4 — Bacterial dinuclear zinc exopeptidases

CATH v4.4 (1 domains)

Domain ID domain_id	1igbA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	630 — Aminopeptidase
Homologous superfamily homologous superfamily	10 — Zn peptidases

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Unit-cell length a length_a	109.150 Å
Unit-cell length b length_b	109.150 Å
Unit-cell length c length_c	98.350 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 61 2 2
Space-group number int_tables_number	178
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	0.1600
R_work r_work	0.1600
R_free r_free	0.2410

AEROMONAS PROTEOLYTICA AMINOPEPTIDASE COMPLEXED WITH THE INHIBITOR PARA-IODO-D-PHENYLALANINE HYDROXAMATE

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

AMINOPEPTIDASE

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

1igb__assembly_1__model_1

1igb__assembly_1__model_1 | I(q)

1igb__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (3)

AEROMONAS PROTEOLYTICA AMINOPEPTIDASE COMPLEXED WITH THE INHIBITOR PARA-IODO-D-PHENYLALANINE HYDROXAMATE

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

AMINOPEPTIDASE

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

1igb__assembly_1__model_1

1igb__assembly_1__model_1 | I(q)

1igb__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (3)