1i89

Chalcone synthase (G256L)

Method: X-RAY DIFFRACTION Dmax: 122.3 Å Quality: GOOD

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

CHALCONE SYNTHASE 2

Medicago sativa

UniProt P30074

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 1–389 Chain B; UniProt 1–389 Mutation:G256L Non-standard monomer:Yes (specific site not provided by mmCIF) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;277 K;2.2-2.4 M ammonium sulfate, 0.1 M PIPES, 5 mM DTT, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 1.86 Å R-free 0.259

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.

15 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CHS2_MEDSA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–389; UniProt 1–389 Author chain B; PDBConstruct 1–389; UniProt 1–389

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 1i89

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1i89
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1i89
Deposition date deposition_date2001-03-12
Structure title titleChalcone synthase (G256L)
Keywords keywordschalcone synthase, polyketide synthase, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier36.49
Radius of gyration Rg (electron density) rg_electron36.24
Forward intensity I(0) i0108074000.00
Molecular weight molecular_weight85321.0 kDa
Excluded volume excluded_volume107620 ų
Envelope volume envelope_volume136470 ų
Hydration-shell volume shell_volume33073 ų
Envelope diameter envelope_diameter120.8
Shell Rg shell_rg39.99
Envelope Rg envelope_rg35.88
Shape Rg shape_rg36.23
Total Rg total_rg36.53
Total atoms total_atoms5986
Residues n_residues774
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 dmax122.3
Rg (real space) rg_real36.81
Rg uncertainty (real space) rg_real_error1.22
I(0) (real space) i0_real1.0810e+08
I(0) uncertainty (real space) i0_real_error2.0040e+06
Rg (reciprocal space) rg_reciprocal36.62
I(0) (reciprocal space) i0_reciprocal108100000.0000
Solution quality estimate total_estimate0.7878
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary28.4
Skewness Skewness skewness0.405
Kurtosis Kurtosis kurtosis-0.750
Angular range angular_range— – 0.2150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha23860000.0000
Real-space data points n_real_points44
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.641; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.508; Smooth: 0.806

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1i89a1
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_idd1i89a2
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_idd1i89b1
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_idd1i89b2
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_id1i89A01
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_id1i89A02
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_id1i89B01
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_id1i89B02
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 (1)

9. Files and Curves (10)