SAXSdb — 1u6e

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

3-oxoacyl-[acyl-carrier-protein] synthase III

Mycobacterium tuberculosis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CHLORIDE ION × 4 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FABH_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–334； UniProt 1–335 Author chain B； PDBConstruct 1–334； UniProt 1–335

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	1u6e
Deposition date deposition_date	2004-07-29
Structure title title	1.85 Angstrom Crystal Structure of the C112A Mutant of Mycobacterium Tuberculosis Beta-Ketoacyl-Acyl Carrier Protein Synthase III (FabH)
Keywords keywords	TRANSFERASE, 3-oxoacyl-[acyl-carrier-protein] synthase III; 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.

1u6e__assembly_1__model_1

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

Download this curve (.dat)

1u6e__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1u6e__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	25.25 Å
Rg (electron density)	24.12 Å
Total Rg	24.97 Å
Atom count	4866
Residues	668
Excluded volume	86077 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1u6e__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 (3)

Entity 1 Entity 1 polymer

Description description	3-oxoacyl-[acyl-carrier-protein] synthase III
Molecular weight formula_weight	34871.3 kDa
EC 编号 ec_number	2.3.1.41
Mutation mutation	C112A
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	5455

MTEIATTSGARSVGLLSVGAYRPERVVTNDEICQHIDSSDEWIYTRTGIKTRRFAADDESAASMATEACRRALSNAGLSAADIDGVIVTTNTHFLQTPPAAPMVAASLGAKGILGFDLSAGAAGFGYALGAAADMIRGGGAATMLVVGTEKLSPTIDMYDRGNCFIFADGAAAVVVGETPFQGIGPTVAGSDGEQADAIRQDIDWITFAQNPSGPRPFVRLEGPAVFRWAAFKMGDVGRRAMDAAGVRPDQIDVFVPHQANSRINELLVKNLQLRPDAVVANDIEHTGNTSAASIPLAMAELLTTGAAKPGDLALLIGYGAGLSYAAQVVRMPKG

Source Source

Source organism organism	Mycobacterium tuberculosis
NCBI taxonomy ID ncbi_taxonomy_id	1773
Host organism host_organism	Escherichia coli BL21(DE3)

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	4

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	556

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1u6ea1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.95 — Thiolase-like
Superfamily Superfamily superfamily	c.95.1 — Thiolase-like
Family Family family	c.95.1.2 — Chalcone synthase-like

Domain ID domain_id	d1u6ea2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.95 — Thiolase-like
Superfamily Superfamily superfamily	c.95.1 — Thiolase-like
Family Family family	c.95.1.2 — Chalcone synthase-like

Domain ID domain_id	d1u6eb1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.95 — Thiolase-like
Superfamily Superfamily superfamily	c.95.1 — Thiolase-like
Family Family family	c.95.1.2 — Chalcone synthase-like

Domain ID domain_id	d1u6eb2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.95 — Thiolase-like
Superfamily Superfamily superfamily	c.95.1 — Thiolase-like
Family Family family	c.95.1.2 — Chalcone synthase-like

CATH v4.4 (4 domains)

Domain ID domain_id	1u6eA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

Domain ID domain_id	1u6eA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

Domain ID domain_id	1u6eB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

Domain ID domain_id	1u6eB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Thiolase/Chalcone synthase

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Unit-cell length a length_a	55.263 Å
Unit-cell length b length_b	109.021 Å
Unit-cell length c length_c	110.976 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	8

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

Resolution resolution	1.850 Å
Low-resolution limit resolution_low	26.900 Å
R factor r_factor	0.1828
R_work r_work	0.1802
R_free r_free	0.2057

1.85 Angstrom Crystal Structure of the C112A Mutant of Mycobacterium Tuberculosis Beta-Ketoacyl-Acyl Carrier Protein Synthase III (FabH)

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

3-oxoacyl-[acyl-carrier-protein] synthase III

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

1u6e__assembly_1__model_1

1u6e__assembly_1__model_1 | I(q)

1u6e__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)

1.85 Angstrom Crystal Structure of the C112A Mutant of Mycobacterium Tuberculosis Beta-Ketoacyl-Acyl Carrier Protein Synthase III (FabH)

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

3-oxoacyl-[acyl-carrier-protein] synthase III

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

1u6e__assembly_1__model_1

1u6e__assembly_1__model_1 | I(q)

1u6e__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (2)