SAXSdb — 1xgv

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

Isocitrate dehydrogenase

Aeropyrum pernix

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9YE81_AERPE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–435； UniProt 1–435 Author chain B； PDBConstruct 1–435； UniProt 1–435

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	1xgv
Deposition date deposition_date	2004-09-17
Structure title title	Isocitrate Dehydrogenase from the hyperthermophile Aeropyrum pernix
Keywords keywords	Native enzyme, disulphide-bond, 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.

1xgv__assembly_1__model_1

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

Download this curve (.dat)

1xgv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1xgv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.67 Å
Rg (electron density)	28.78 Å
Total Rg	29.53 Å
Atom count	6595
Residues	850
Excluded volume	117620 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1xgv__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 (2)

Entity 1 Entity 1 polymer

Description description	Isocitrate dehydrogenase
Molecular weight formula_weight	47982.9 kDa
EC 编号 ec_number	1.1.1.42
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	6757

MQVMASPPCTTEELSPPPGGSLVEYSGGSLRVPDNPVVAFIRGDGVGPEVVESALKVVDAAVKKVYGGSRRIVWWELLAGHLAREKCGELLPKATLEGIRLARVALKGPLETPVGTGYRSLNVAIRQALDLYANIRPVRYYGQPAPHKYADRVDMVIFRENTEDVYAGIEWPHDSPEAARIRRFLAEEFGISIREDAGIGVKPISRFATRRLMERALEWALRNGNTVVTIMHKGNIMKYTEGAFMRWAYEVALEKFREHVVTEQEVQEKYGGVRPEGKILVNDRIADNMLQQIITRPWDYQVIVAPNLNGDYISDAASALVGGIGMAAGMNMGDGIAVAEPVHGTAPKYAGKDLINPSAEILSASLLIGEFMGWREVKSIVEYAIRKAVQSKKVTQDLARHMPGVQPLRTSEYTETLIAYIDEADLNEVLAGKRG

Source Source

Source organism organism	Aeropyrum pernix
NCBI taxonomy ID ncbi_taxonomy_id	56636
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	162

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1xgva_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.77 — Isocitrate/Isopropylmalate dehydrogenase-like
Superfamily Superfamily superfamily	c.77.1 — Isocitrate/Isopropylmalate dehydrogenase-like
Family Family family	c.77.1.0 — automated matches

Domain ID domain_id	d1xgvb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.77 — Isocitrate/Isopropylmalate dehydrogenase-like
Superfamily Superfamily superfamily	c.77.1 — Isocitrate/Isopropylmalate dehydrogenase-like
Family Family family	c.77.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id	1xgvA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	718 — Isopropylmalate Dehydrogenase
Homologous superfamily homologous superfamily	10 — Isopropylmalate Dehydrogenase

Domain ID domain_id	1xgvB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	718 — Isopropylmalate Dehydrogenase
Homologous superfamily homologous superfamily	10 — Isopropylmalate Dehydrogenase

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Unit-cell length a length_a	107.569 Å
Unit-cell length b length_b	107.569 Å
Unit-cell length c length_c	171.143 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	P 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	2.200 Å
Low-resolution limit resolution_low	39.840 Å
R factor r_factor	0.2261
R_work r_work	0.2248
R_free r_free	0.2506

Isocitrate Dehydrogenase from the hyperthermophile Aeropyrum pernix

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

Isocitrate dehydrogenase

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

1xgv__assembly_1__model_1

1xgv__assembly_1__model_1 | I(q)

1xgv__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Isocitrate Dehydrogenase from the hyperthermophile Aeropyrum pernix

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

Isocitrate dehydrogenase

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

1xgv__assembly_1__model_1

1xgv__assembly_1__model_1 | I(q)

1xgv__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)