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- PDB-3aok: Crystal structure of sweet-tasting protein thaumatin II -

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Basic information

Entry
Database: PDB / ID: 3aok
TitleCrystal structure of sweet-tasting protein thaumatin II
ComponentsThaumatin-2
KeywordsPLANT PROTEIN / thaumatin family / mainly beta / taste protein / sweet receptor / aril
Function / homology
Function and homology information


cytoplasmic vesicle
Similarity search - Function
Thaumatin / Thaumatin / Thaumatin, conserved site / Thaumatin family signature. / Thaumatin family / Thaumatin family / Thaumatin family profile. / Thaumatin family / Osmotin/thaumatin-like superfamily / Sandwich / Mainly Beta
Similarity search - Domain/homology
L(+)-TARTARIC ACID / Thaumatin II
Similarity search - Component
Biological speciesThaumatococcus daniellii (katemfe)
MethodX-RAY DIFFRACTION / SYNCHROTRON / AB INITIO / Resolution: 1.27 Å
AuthorsMasuda, T. / Mikami, B. / Kitabatake, N.
CitationJournal: Biochem.Biophys.Res.Commun. / Year: 2011
Title: Crystal structure of the sweet-tasting protein thaumatin II at 1.27A
Authors: Masuda, T. / Ohta, K. / Tani, F. / Mikami, B. / Kitabatake, N.
History
DepositionOct 1, 2010Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 27, 2011Provider: repository / Type: Initial release
Revision 1.1Oct 16, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Thaumatin-2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)22,9817
Polymers22,3121
Non-polymers6696
Water7,458414
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)57.7690, 57.7690, 150.1260
Angle α, β, γ (deg.)90.0000, 90.0000, 90.0000
Int Tables number92
Space group name H-MP41212

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Components

#1: Protein Thaumatin-2 / Thaumatin II


Mass: 22312.186 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Thaumatococcus daniellii (katemfe) / References: UniProt: P02884
#2: Chemical ChemComp-TLA / L(+)-TARTARIC ACID


Mass: 150.087 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C4H6O6
#3: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C3H8O3
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 414 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 2.81 Å3/Da / Density % sol: 56.2 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: 0.02M ADA, 0.75M TARTRATE, 25%GLYCEROL, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SPring-8 / Beamline: BL44XU / Wavelength: 1 / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 210 / Detector: CCD / Date: Jun 4, 2010
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.27→50 Å / Num. obs: 68167 / % possible obs: 100 % / Redundancy: 9.1 % / Rmerge(I) obs: 0.072 / Net I/σ(I): 48.1
Reflection shellResolution: 1.27→1.32 Å / Redundancy: 8.8 % / Rmerge(I) obs: 0.328 / Mean I/σ(I) obs: 8.3 / % possible all: 100

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Processing

Software
NameClassification
SHELXmodel building
SHELXL-97refinement
HKL-2000data reduction
HKL-2000data scaling
SHELXphasing
RefinementMethod to determine structure: AB INITIO / Resolution: 1.27→10 Å / Num. parameters: 20064 / Num. restraintsaints: 26217 / Cross valid method: FREE R / σ(F): 0 / Stereochemistry target values: Engh & Huber
Details: ANISOTROPIC REFINEMENT REDUCED FREE R (NO CUTOFF) BY ?
RfactorNum. reflection% reflectionSelection details
Rfree0.1479 3391 5.3 %RANDOM
all0.1109 64442 --
obs0.1121 68167 95 %-
Refine analyzeNum. disordered residues: 38 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 1991.17
Refinement stepCycle: LAST / Resolution: 1.27→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1557 0 44 414 2015
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.015
X-RAY DIFFRACTIONs_angle_d0.033
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0318
X-RAY DIFFRACTIONs_zero_chiral_vol0.084
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.099
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.024
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0.005
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.048
X-RAY DIFFRACTIONs_approx_iso_adps0.111
LS refinement shellResolution: 1.27→1.32 Å
RfactorNum. reflection% reflection
Rwork0.148 --
obs-7308 100 %

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