SAXSdb — 3eeg

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

2-isopropylmalate synthase

Cytophaga hutchinsonii ATCC 33406

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	Q11NN9_CYTH3
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–317； UniProt 2–315 Author chain B； PDBConstruct 4–317； UniProt 2–315

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	3eeg
Deposition date deposition_date	2008-09-04
Structure title title	Crystal structure of a 2-isopropylmalate synthase from Cytophaga hutchinsonii
Keywords keywords	;2-isopropylmalate synthase, 11106d, Beta barrel, PSI-II, Structural Genomics, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGXRC, Acyltransferase, Transferase ;; TRANSFERASE
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.

3eeg__assembly_1__model_1

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

Download this curve (.dat)

3eeg__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3eeg__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.63 Å
Rg (electron density)	26.29 Å
Total Rg	26.87 Å
Atom count	4114
Residues	524
Excluded volume	73498 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3eeg__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)

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3eegA00
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	70 — Aldolase class I

Domain ID domain_id	3eegB00
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	70 — Aldolase class I

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Unit-cell length a length_a	118.666 Å
Unit-cell length b length_b	118.666 Å
Unit-cell length c length_c	154.910 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	24

Space group space_group	P 65 2 2
Space-group number int_tables_number	179
Crystal system crystal_system	—

Resolution resolution	2.780 Å
Low-resolution limit resolution_low	38.950 Å
R factor r_factor	0.2450
R_work r_work	0.2450
R_free r_free	0.2980

Description description	2-isopropylmalate synthase
Molecular weight formula_weight	36139.7 kDa
EC 编号 ec_number	2.3.3.13
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4170

Crystal structure of a 2-isopropylmalate synthase from Cytophaga hutchinsonii

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

2-isopropylmalate synthase

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

3eeg__assembly_1__model_1

3eeg__assembly_1__model_1 | I(q)

3eeg__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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Cytophaga hutchinsonii ATCC 33406
NCBI taxonomy ID ncbi_taxonomy_id	269798
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	56

Crystal structure of a 2-isopropylmalate synthase from Cytophaga hutchinsonii

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

2-isopropylmalate synthase

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

3eeg__assembly_1__model_1

3eeg__assembly_1__model_1 | I(q)

3eeg__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) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)