SAXSdb — 4u19

▼

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

Enoyl-CoA delta isomerase 2

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	CHLORIDE ION × 3 1,2-ETHANEDIOL × 1 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ECI2_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 24–276； UniProt 138–390 Author chain B； PDBConstruct 24–276； UniProt 138–390 Author chain C； PDBConstruct 24–276； UniProt 138–390

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	4u19
Deposition date deposition_date	2014-07-15
Structure title title	Crystal structure of human peroxisomal delta3,delta2, enoyl-CoA isomerase V349A mutant (ISOA-ECI2)
Keywords keywords	PECI, enoy-CoA isomerase, crotonase, beta-oxidation, isomerase; ISOMERASE
Experimental Method method	X-RAY DIFFRACTION

▼

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.

4u19__assembly_1__model_1

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

Download this curve (.dat)

4u19__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4u19__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.14 Å
Rg (electron density)	26.87 Å
Total Rg	27.73 Å
Atom count	5776
Residues	747
Excluded volume	103400 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4u19__assembly_1__model_1`	Trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	Enoyl-CoA delta isomerase 2
Molecular weight formula_weight	30536.8 kDa
EC 编号 ec_number	5.3.3.8
Mutation mutation	yes
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	6072

MHHHHHHSSGVDLGTENLYFQSMGFETLVVTSEDGITKIMFNRPKKKNAINTEMYHEIMRALKAASKDDSIITVLTGNGDYYSSGNDLTNFTDIPPGGVEEKAKNNAVLLREFVGCFIDFPKPLIAVVNGPAVGISVTLLGLFDAVYASDRATFHTPFSHLGQSPEGCSSYTFPKIMSPAKATEMLIFGKKLTAGEACAQGLVTEVFPDSTFQKEVWTRLKAFAKLPPNALRISKEVIRKREREKLHAVNAEECNVLQGRWLSDECTNAAVNFLSR

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 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	273

▼

6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (5 domains)

Domain ID domain_id	d4u19a1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.3 — Crotonase-like

Domain ID domain_id	d4u19a2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d4u19b1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.3 — Crotonase-like

Domain ID domain_id	d4u19b2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d4u19c_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.3 — Crotonase-like

CATH v4.4 (6 domains)

Domain ID domain_id	4u19A01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	4u19A02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	12 — Lyase 2-enoyl-coa Hydratase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Lyase 2-enoyl-coa Hydratase, Chain A, domain 2

Domain ID domain_id	4u19B01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	4u19B02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	12 — Lyase 2-enoyl-coa Hydratase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Lyase 2-enoyl-coa Hydratase, Chain A, domain 2

Domain ID domain_id	4u19C01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	4u19C02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	12 — Lyase 2-enoyl-coa Hydratase; Chain A, domain 2
Homologous superfamily homologous superfamily	10 — Lyase 2-enoyl-coa Hydratase, Chain A, domain 2

▶

Unit-cell length a length_a	47.609 Å
Unit-cell length b length_b	123.690 Å
Unit-cell length c length_c	128.933 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	12

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	1.880 Å
Low-resolution limit resolution_low	47.600 Å
R factor r_factor	0.1865
R_work r_work	0.1839
R_free r_free	0.2344

Crystal structure of human peroxisomal delta3,delta2, enoyl-CoA isomerase V349A mutant (ISOA-ECI2)

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

Enoyl-CoA delta isomerase 2

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

4u19__assembly_1__model_1

4u19__assembly_1__model_1 | I(q)

4u19__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

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (5 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal structure of human peroxisomal delta3,delta2, enoyl-CoA isomerase V349A mutant (ISOA-ECI2)

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

Enoyl-CoA delta isomerase 2

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

4u19__assembly_1__model_1

4u19__assembly_1__model_1 | I(q)

4u19__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

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (5 domains)

CATH v4.4 (6 domains)

7. Citations (1)