SAXSdb — 2gqd

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

3-oxoacyl-[acyl-carrier-protein] synthase 2

Staphylococcus aureus

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	FABF_STAAW
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 24–437； UniProt 1–414 Author chain B； PDBConstruct 24–437； UniProt 1–414

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	2gqd
Deposition date deposition_date	2006-04-20
Structure title title	The crystal structure of B-ketoacyl-ACP synthase II (FabF) from Staphylococcus aureus
Keywords keywords	duplicated BABABABB fold, 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.

2gqd__assembly_1__model_1

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

Download this curve (.dat)

2gqd__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2gqd__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.31 Å
Rg (electron density)	25.17 Å
Total Rg	26.06 Å
Atom count	6085
Residues	822
Excluded volume	107550 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2gqd__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)

Entity 1 Entity 1 polymer

Description description	3-oxoacyl-[acyl-carrier-protein] synthase 2
Molecular weight formula_weight	46331.0 kDa
EC 编号 ec_number	2.3.1.41
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	6358

MGSSHHHHHHSSGLVPRGSHMLEMSQNKRVVITGMGALSPIGNDVKTTWENALKGVNGIDKITRIDTEPYSVHLAGELKNFNIEDHIDKKEARRMDRFTQYAIVAAREAVKDAQLDINENTADRIGVWIGSGIGGMETFEIAHKQLMDKGPRRVSPFFVPMLIPDMATGQVSIDLGAKGPNGATVTACATGTNSIGEAFKIVQRGDADAMITGGTEAPITHMAIAGFSASRALSTNDDIETACRPFQEGRDGFVMGEGAGILVIESLESAQARGANIYAEIVGYGTTGDAYHITAPAPEGEGGSRAMQAAMDDAGIEPKDVQYLNAHGTSTPVGDLNEVKAIKNTFGEAAKHLKVSSTKSMTGHLLGATGGIEAIFSALSIKDSKVAPTIHAVTPDPECDLDIVPNEAQDLDITYAMSNSLGFGGHNAVLVFKKFEA

Source Source

Source organism organism	Staphylococcus aureus
NCBI taxonomy ID ncbi_taxonomy_id	1280
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	273

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2gqda1
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.95.1.1 — Thiolase-related

Domain ID domain_id	d2gqda2
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.95.1.1 — Thiolase-related

Domain ID domain_id	d2gqdb1
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.95.1.1 — Thiolase-related

Domain ID domain_id	d2gqdb2
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.95.1.1 — Thiolase-related

CATH v4.4 (4 domains)

Domain ID domain_id	2gqdA01
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	2gqdA02
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	2gqdB01
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	2gqdB02
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	78.397 Å
Unit-cell length b length_b	78.397 Å
Unit-cell length c length_c	231.269 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	12

Space group space_group	P 65
Space-group number int_tables_number	170
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	29.910 Å
R factor r_factor	0.2235
R_work r_work	0.2209
R_free r_free	0.2732

The crystal structure of B-ketoacyl-ACP synthase II (FabF) from Staphylococcus aureus

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

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

2gqd__assembly_1__model_1

2gqd__assembly_1__model_1 | I(q)

2gqd__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

The crystal structure of B-ketoacyl-ACP synthase II (FabF) from Staphylococcus aureus

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

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

2gqd__assembly_1__model_1

2gqd__assembly_1__model_1 | I(q)

2gqd__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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)