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- PDB-2aet: R304K trichodiene synthase: Complex with Mg, pyrophosphate, and (... -

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Basic information

Entry
Database: PDB / ID: 2aet
TitleR304K trichodiene synthase: Complex with Mg, pyrophosphate, and (4S)-7-azabisabolene
ComponentsTrichodiene synthase
KeywordsLYASE / pyrophosphate / terpenoid synthase fold / site-directed mutagenesis / (4S)-7-azabisabolene
Function / homology
Function and homology information


trichodiene synthase / trichodiene synthase activity / sesquiterpenoid biosynthetic process / metal ion binding
Similarity search - Function
Trichodiene synthase, ascomycetes / Trichodiene synthase / Trichodiene synthase (TRI5) / Farnesyl Diphosphate Synthase / Farnesyl Diphosphate Synthase / Isoprenoid synthase domain superfamily / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
PYROPHOSPHATE 2- / Trichodiene synthase
Similarity search - Component
Biological speciesFusarium sporotrichioides (fungus)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2.75 Å
AuthorsVedula, L.S. / Cane, D.E. / Christianson, D.W.
CitationJournal: Biochemistry / Year: 2005
Title: Role of arginine-304 in the diphosphate-triggered active site closure mechanism of trichodiene synthase.
Authors: Vedula, L.S. / Cane, D.E. / Christianson, D.W.
History
DepositionJul 23, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 4, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 20, 2021Group: Database references / Derived calculations
Category: database_2 / pdbx_struct_conn_angle ...database_2 / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Aug 23, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Trichodiene synthase
B: Trichodiene synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)88,4188
Polymers88,0452
Non-polymers3736
Water1,60389
1
A: Trichodiene synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)44,0852
Polymers44,0231
Non-polymers621
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Trichodiene synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)44,3346
Polymers44,0231
Non-polymers3115
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3


  • Idetical with deposited unit
  • defined by software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6660 Å2
ΔGint-61 kcal/mol
Surface area27680 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)122.380, 122.380, 151.090
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein Trichodiene synthase / Sesquiterpene cyclase / TS


Mass: 44022.586 Da / Num. of mol.: 2 / Mutation: R304K
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Fusarium sporotrichioides (fungus) / Gene: TRI5 / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P13513, trichodiene synthase
#2: Chemical ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H6O2
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-POP / PYROPHOSPHATE 2-


Mass: 175.959 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: H2O7P2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 89 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 3.71 Å3/Da / Density % sol: 66.83 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 6.9
Details: PEG 8000, Sodium HEPES, Calcium chloride, pH 6.9, VAPOR DIFFUSION, HANGING DROP, temperature 277.0K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X12B / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Apr 1, 2005
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.75→60 Å / Num. obs: 30895 / % possible obs: 88.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 6.2 % / Biso Wilson estimate: 76 Å2 / Rmerge(I) obs: 0.138 / Net I/σ(I): 13
Reflection shellResolution: 2.75→2.85 Å / Redundancy: 5.7 % / Rmerge(I) obs: 0.554 / Mean I/σ(I) obs: 3.2 / Num. unique all: 3126 / % possible all: 91.1

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Processing

Software
NameClassification
HKL-2000data collection
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: 1JFG

1jfg


Resolution: 2.75→60 Å / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
Details: RESIDUES IN PDB ENTRY THAT HAVE OCCUPANCY ZERO WERE REFINED AS ALANINES. SAZ not included in the final model due to multiple conformations.
RfactorNum. reflection% reflectionSelection details
Rfree0.256 1523 -Random
Rwork0.216 ---
all-34558 --
obs-30674 88.8 %-
Displacement parametersBiso mean: 59 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.46 Å0.37 Å
Luzzati d res low-5 Å
Luzzati sigma a0.53 Å0.42 Å
Refinement stepCycle: LAST / Resolution: 2.75→60 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5847 0 20 89 5956
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_dihedral_angle_d18.9
X-RAY DIFFRACTIONc_improper_angle_d0.8

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