1ebl

THE 1.8 A CRYSTAL STRUCTURE AND ACTIVE SITE ARCHITECTURE OF BETA-KETOACYL-[ACYL CARRIER PROTEIN] SYNTHASE III (FABH) FROM ESCHERICHIA COLI

Method: X-RAY DIFFRACTION Dmax: 79.0 Å Quality: EXCELLENT

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

BETA-KETOACYL-ACP SYNTHASE III

Escherichia coli

UniProt P0A6R0

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–317 Chain B; UniProt 1–317 Non-standard monomer:Yes (specific site not provided by mmCIF) COA COENZYME A × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;1.8-2.0 M ammonium sulphate, 2% PEG 400, 0.1M HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K Resolution 1.80 Å R-free 0.225

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

18 other PDB entries and 19 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FABH_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–317; UniProt 1–317 Author chain B; PDBConstruct 1–317; UniProt 1–317

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.

SAXS scattering curve SAXS Profile

SAXS profile for 1ebl

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ebl
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1ebl
Deposition date deposition_date2000-01-24
Structure title titleTHE 1.8 A CRYSTAL STRUCTURE AND ACTIVE SITE ARCHITECTURE OF BETA-KETOACYL-[ACYL CARRIER PROTEIN] SYNTHASE III (FABH) FROM ESCHERICHIA COLI
Keywords keywords;ACYLTRANSFERASE, CONDENSING ENZYME, FATTY ACID SYNTHESIS, LIPID METABOLISM, ALPHA-BETA PROTEIN, FIVE-LAYERED FOLD, COENZYME A BINDING PROTEIN, HELIX DIPOLE, MALONYL COA DECARBOXYLATING ENZYME, TRANSFERASE ;; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier25.27
Radius of gyration Rg (electron density) rg_electron24.03
Forward intensity I(0) i085460200.00
Molecular weight molecular_weight69308.0 kDa
Excluded volume excluded_volume85134 ų
Envelope volume envelope_volume96244 ų
Hydration-shell volume shell_volume32358 ų
Envelope diameter envelope_diameter82.0
Shell Rg shell_rg32.29
Envelope Rg envelope_rg24.28
Shape Rg shape_rg24.00
Total Rg total_rg24.91
Total atoms total_atoms4798
Residues n_residues618
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax79.0
Rg (real space) rg_real25.18
Rg uncertainty (real space) rg_real_error0.30
I(0) (real space) i0_real8.5460e+07
I(0) uncertainty (real space) i0_real_error1.0180e+06
Rg (reciprocal space) rg_reciprocal25.21
I(0) (reciprocal space) i0_reciprocal85460000.0000
Solution quality estimate total_estimate0.9007
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary31.3
Skewness Skewness skewness0.259
Kurtosis Kurtosis kurtosis-0.370
Angular range angular_range— – 0.3150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha18260000.0000
Real-space data points n_real_points64
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.912; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.970

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1ebla1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.95 — Thiolase-like
Superfamily Superfamily superfamilyc.95.1 — Thiolase-like
Family Family familyc.95.1.2 — Chalcone synthase-like
Domain ID domain_idd1ebla2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.95 — Thiolase-like
Superfamily Superfamily superfamilyc.95.1 — Thiolase-like
Family Family familyc.95.1.2 — Chalcone synthase-like
Domain ID domain_idd1eblb1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.95 — Thiolase-like
Superfamily Superfamily superfamilyc.95.1 — Thiolase-like
Family Family familyc.95.1.2 — Chalcone synthase-like
Domain ID domain_idd1eblb2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.95 — Thiolase-like
Superfamily Superfamily superfamilyc.95.1 — Thiolase-like
Family Family familyc.95.1.2 — Chalcone synthase-like

CATH v4.4 (4 domains)

Domain ID domain_id1eblA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Thiolase/Chalcone synthase
Domain ID domain_id1eblA02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Thiolase/Chalcone synthase
Domain ID domain_id1eblB01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Thiolase/Chalcone synthase
Domain ID domain_id1eblB02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology47 — Peroxisomal Thiolase; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Thiolase/Chalcone synthase

8. Citations (2)

9. Files and Curves (10)