SAXSdb — 1c4t

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

PROTEIN (DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE)

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	SULFATE ION × 6 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ODO2_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–233； UniProt 173–405 Author chain B； PDBConstruct 1–233； UniProt 173–405 Author chain C； PDBConstruct 1–233； UniProt 173–405

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	1c4t
Deposition date deposition_date	1999-09-22
Structure title title	CATALYTIC DOMAIN FROM TRIMERIC DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE
Keywords keywords	TRANSFERASE, ACYLTRANSFERASE, KETOGLUTARATE DEHYDROGENASE MULTIENZYME COMPLEX; 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.

1c4t__assembly_1__model_1

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

Download this curve (.dat)

1c4t__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1c4t__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.50 Å
Rg (electron density)	25.33 Å
Total Rg	26.14 Å
Atom count	5016
Residues	667
Excluded volume	90132 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1c4t__assembly_1__model_1`	trimeric （3）	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 (3)

Entity 1 Entity 1 polymer

Description description	PROTEIN (DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE)
Molecular weight formula_weight	26107.4 kDa
EC 编号 ec_number	2.3.1.61
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	5044

ARSEKRVPMTRLRKRVAERLLEAKNSTAMLTTFNEVNMKPIMDLRKQYGEAFEKRHGIRLGFMSFYVKAVVEALKRYPEVNASIDGDDVVYHNYFDVSMAVSTPRGLVTPVLRDVDTLGMADIEKKIKELAVKGRDGKLTVEDLTGGNFTITNGGVFGSLMSTPIINPPQSAILGMHAIKDRPMAVNGQVEILPMMYLALSYDHRLIDGRESVGFLVTIKELLEDPTRLLLDV

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	469008
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	28

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1c4ta_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.43 — CoA-dependent acyltransferases
Superfamily Superfamily superfamily	c.43.1 — CoA-dependent acyltransferases
Family Family family	c.43.1.1 — CAT-like

Domain ID domain_id	d1c4tb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.43 — CoA-dependent acyltransferases
Superfamily Superfamily superfamily	c.43.1 — CoA-dependent acyltransferases
Family Family family	c.43.1.1 — CAT-like

Domain ID domain_id	d1c4tc_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.43 — CoA-dependent acyltransferases
Superfamily Superfamily superfamily	c.43.1 — CoA-dependent acyltransferases
Family Family family	c.43.1.1 — CAT-like

CATH v4.4 (3 domains)

Domain ID domain_id	1c4tA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	559 — Chloramphenicol Acetyltransferase
Homologous superfamily homologous superfamily	10 — Chloramphenicol acetyltransferase-like domain

Domain ID domain_id	1c4tB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	559 — Chloramphenicol Acetyltransferase
Homologous superfamily homologous superfamily	10 — Chloramphenicol acetyltransferase-like domain

Domain ID domain_id	1c4tC00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	559 — Chloramphenicol Acetyltransferase
Homologous superfamily homologous superfamily	10 — Chloramphenicol acetyltransferase-like domain

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Unit-cell length a length_a	112.175 Å
Unit-cell length b length_b	112.175 Å
Unit-cell length c length_c	134.417 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	18

Space group space_group	P 31 2 1
Space-group number int_tables_number	152
Crystal system crystal_system	—

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.2570
R_work r_work	0.2570
R_free r_free	0.2860

CATALYTIC DOMAIN FROM TRIMERIC DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE

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

PROTEIN (DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE)

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

1c4t__assembly_1__model_1

1c4t__assembly_1__model_1 | I(q)

1c4t__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (3)

CATALYTIC DOMAIN FROM TRIMERIC DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE

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

PROTEIN (DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE)

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

1c4t__assembly_1__model_1

1c4t__assembly_1__model_1 | I(q)

1c4t__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (3)