SAXSdb — 1fth

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

ACYL CARRIER PROTEIN SYNTHASE

Streptococcus pneumoniae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	ADENOSINE-3'-5'-DIPHOSPHATE × 2 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ACPS_STRPN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–122； UniProt 1–120 Author chain B； PDBConstruct 3–122； UniProt 1–120 Author chain C； PDBConstruct 3–122； UniProt 1–120

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	1fth
Deposition date deposition_date	2000-09-12
Structure title title	CRYSTAL STRUCTURE OF STREPTOCOCCUS PNEUMONIAE ACYL CARRIER PROTEIN SYNTHASE (3'5'-ADP COMPLEX)
Keywords keywords	Bacterial fatty acid biosynthesis, Acyl carrier synthase, Coenzyme A, structure-based drug design, 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.

1fth__assembly_1__model_1

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

Download this curve (.dat)

1fth__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1fth__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	21.86 Å
Rg (electron density)	20.72 Å
Total Rg	21.75 Å
Atom count	2766
Residues	346
Excluded volume	48923 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1fth__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	ACYL CARRIER PROTEIN SYNTHASE
Molecular weight formula_weight	13678.5 kDa
EC 编号 ec_number	2.7.8.7
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	2979

MRMIVGHGIDIEELASIESAVTRHEGFAKRVLTALEMERFTSLKGRRQIEYLAGRWSAKEAFSKAMGTGISKLGFQDLEVLNNERGAPYFSQAPFSGKIWLSISHTDQFVTASVILEENHES

Source Source

Source organism organism	Streptococcus pneumoniae
NCBI taxonomy ID ncbi_taxonomy_id	1313
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	ADENOSINE-3'-5'-DIPHOSPHATE
Molecular weight formula_weight	427.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	213

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1ftha_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.150 — 4'-phosphopantetheinyl transferase
Superfamily Superfamily superfamily	d.150.1 — 4'-phosphopantetheinyl transferase
Family Family family	d.150.1.2 — Holo-(acyl carrier protein) synthase ACPS

Domain ID domain_id	d1fthb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.150 — 4'-phosphopantetheinyl transferase
Superfamily Superfamily superfamily	d.150.1 — 4'-phosphopantetheinyl transferase
Family Family family	d.150.1.2 — Holo-(acyl carrier protein) synthase ACPS

Domain ID domain_id	d1fthc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.150 — 4'-phosphopantetheinyl transferase
Superfamily Superfamily superfamily	d.150.1 — 4'-phosphopantetheinyl transferase
Family Family family	d.150.1.2 — Holo-(acyl carrier protein) synthase ACPS

CATH v4.4 (3 domains)

Domain ID domain_id	1fthA00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	470 — Ribosomal Protein L22; Chain A
Homologous superfamily homologous superfamily	20 — 4'-phosphopantetheinyl transferase domain

Domain ID domain_id	1fthB00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	470 — Ribosomal Protein L22; Chain A
Homologous superfamily homologous superfamily	20 — 4'-phosphopantetheinyl transferase domain

Domain ID domain_id	1fthC00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	470 — Ribosomal Protein L22; Chain A
Homologous superfamily homologous superfamily	20 — 4'-phosphopantetheinyl transferase domain

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Unit-cell length a length_a	120.188 Å
Unit-cell length b length_b	62.273 Å
Unit-cell length c length_c	51.673 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	98.75 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	—
R_work r_work	0.2380
R_free r_free	0.2750

CRYSTAL STRUCTURE OF STREPTOCOCCUS PNEUMONIAE ACYL CARRIER PROTEIN SYNTHASE (3'5'-ADP COMPLEX)

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

ACYL CARRIER PROTEIN 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

1fth__assembly_1__model_1

1fth__assembly_1__model_1 | I(q)

1fth__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 (1)

CRYSTAL STRUCTURE OF STREPTOCOCCUS PNEUMONIAE ACYL CARRIER PROTEIN SYNTHASE (3'5'-ADP COMPLEX)

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

ACYL CARRIER PROTEIN 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

1fth__assembly_1__model_1

1fth__assembly_1__model_1 | I(q)

1fth__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 (1)