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- PDB-4q7i: Crystal structure of engineered thermostable D-tagatose 3-epimera... -

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Basic information

Entry
Database: PDB / ID: 4q7i
TitleCrystal structure of engineered thermostable D-tagatose 3-epimerase PcDTE-Var8
ComponentsD-tagatose 3-epimerase
KeywordsISOMERASE / epimerase / TIM-barrel
Function / homology
Function and homology information


Divalent-metal-dependent TIM barrel enzymes / Xylose isomerase-like, TIM barrel domain / Xylose isomerase-like TIM barrel / Xylose isomerase-like superfamily / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Similarity search - Domain/homology
IMIDAZOLE / : / D-tagatose 3-epimerase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 1.8 Å
AuthorsHee, C.S. / Bosshart, A. / Schirmer, T.
CitationJournal: Chembiochem / Year: 2015
Title: Directed Divergent Evolution of a Thermostable D-Tagatose Epimerase towards Improved Activity for Two Hexose Substrates.
Authors: Bosshart, A. / Hee, C.S. / Bechtold, M. / Schirmer, T. / Panke, S.
History
DepositionApr 25, 2014Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 22, 2014Provider: repository / Type: Initial release
Revision 1.1Feb 18, 2015Group: Database references
Revision 1.2Mar 18, 2015Group: Database references
Revision 1.3Sep 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_ncs_dom_lim / 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_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_alt_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_alt_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_alt_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.pdbx_ptnr1_label_alt_id / _struct_conn.pdbx_ptnr2_label_alt_id / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id / _struct_ncs_dom_lim.beg_label_comp_id / _struct_ncs_dom_lim.beg_label_seq_id / _struct_ncs_dom_lim.end_auth_comp_id / _struct_ncs_dom_lim.end_label_asym_id / _struct_ncs_dom_lim.end_label_comp_id / _struct_ncs_dom_lim.end_label_seq_id / _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

Downloads & links

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Assembly

Deposited unit
A: D-tagatose 3-epimerase
B: D-tagatose 3-epimerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)68,32811
Polymers67,6712
Non-polymers6579
Water8,287460
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area4420 Å2
ΔGint-15 kcal/mol
Surface area21900 Å2
MethodPISA
2
A: D-tagatose 3-epimerase
B: D-tagatose 3-epimerase
hetero molecules

A: D-tagatose 3-epimerase
B: D-tagatose 3-epimerase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)136,65722
Polymers135,3424
Non-polymers1,31418
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,y,-z1
Buried area9640 Å2
ΔGint-75 kcal/mol
Surface area43100 Å2
MethodPISA
Unit cell
Length a, b, c (Å)110.470, 47.500, 124.730
Angle α, β, γ (deg.)90.00, 103.68, 90.00
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11A-606-

MN

21A-902-

HOH

Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21B

NCS domain segments:

Component-ID: _ / Ens-ID: 1 / Beg auth comp-ID: MET / Beg label comp-ID: MET / End auth comp-ID: LEU / End label comp-ID: LEU / Refine code: _ / Auth seq-ID: 1 - 289 / Label seq-ID: 1 - 289

Dom-IDAuth asym-IDLabel asym-ID
1AA
2BB
Detailsbiological unit is the same as asym.

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Components

#1: Protein D-tagatose 3-epimerase


Mass: 33835.586 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Strain: K-12 / Gene: D-tagatose 3-epimerase / Plasmid: pKTS-C6H / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: A0A0A6YVN8*PLUS
#2: Chemical
ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mn
#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: Chemical ChemComp-IMD / IMIDAZOLE


Mass: 69.085 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H5N2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 460 / 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: 2.35 Å3/Da / Density % sol: 47.64 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 7.7
Details: 0.1M Tris, 18% w/v PEG 8000, 0.2M lithium sulfate, pH 7.7, vapor diffusion, sitting drop, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SLS / Beamline: X06SA / Wavelength: 1 Å
DetectorType: DECTRIS PILATUS 2M / Detector: PIXEL / Date: Sep 2, 2013
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.8→53.73 Å / Num. obs: 58427 / % possible obs: 99.6 % / Redundancy: 3.1 % / Rmerge(I) obs: 0.057 / Net I/σ(I): 11.2
Reflection shell
Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsDiffraction-ID% possible all
1.8-1.842.90.3783.1199.6
9-53.673.30.05924.3199.6

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Phasing

PhasingMethod: molecular replacement
Phasing MR
Highest resolutionLowest resolution
Rotation2.1 Å40.51 Å
Translation2.1 Å40.51 Å

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Processing

Software
NameVersionClassificationNB
Aimless0.1.27data scaling
PHASER2.5.3phasing
REFMAC5.7.0029refinement
PDB_EXTRACT3.14data extraction
MOSFLMdata reduction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2qul

2qul


Resolution: 1.8→53.73 Å / Cor.coef. Fo:Fc: 0.962 / Cor.coef. Fo:Fc free: 0.946 / SU B: 5.853 / SU ML: 0.096 / Cross valid method: THROUGHOUT / ESU R: 0.125 / ESU R Free: 0.117 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.20781 2957 5.1 %RANDOM
Rwork0.17643 ---
obs0.17809 55465 99.47 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 31.902 Å2
Baniso -1Baniso -2Baniso -3
1-0.32 Å20 Å2-0.44 Å2
2--0.85 Å20 Å2
3----0.96 Å2
Refinement stepCycle: LAST / Resolution: 1.8→53.73 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4667 0 33 460 5160
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0130.0194836
X-RAY DIFFRACTIONr_bond_other_d0.0040.024549
X-RAY DIFFRACTIONr_angle_refined_deg1.4841.9546533
X-RAY DIFFRACTIONr_angle_other_deg0.946310469
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.065594
X-RAY DIFFRACTIONr_dihedral_angle_2_deg29.58823.504234
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.39115824
X-RAY DIFFRACTIONr_dihedral_angle_4_deg16.851538
X-RAY DIFFRACTIONr_chiral_restr0.0920.2694
X-RAY DIFFRACTIONr_gen_planes_refined0.0130.0215470
X-RAY DIFFRACTIONr_gen_planes_other0.0060.021134
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
Refine LS restraints NCS

Ens-ID: 1 / Number: 18320 / Refine-ID: X-RAY DIFFRACTION / Type: interatomic distance / Rms dev position: 0.09 Å / Weight position: 0.05

Dom-IDAuth asym-ID
1A
2B
LS refinement shellResolution: 1.8→1.847 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.293 201 -
Rwork0.253 4095 -
obs--99.58 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL11 (°2)L12 (°2)L13 (°2)L22 (°2)L23 (°2)L33 (°2)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T11 (Å2)T12 (Å2)T13 (Å2)T22 (Å2)T23 (Å2)T33 (Å2)Origin x (Å)Origin y (Å)Origin z (Å)
10.96090.1271-0.34821.86441.32983.02360.14930.12580.00580.0201-0.1638-0.21040.0178-0.53270.01450.0695-0.0189-0.01740.19610.06580.10229.201412.450117.1503
21.3320.06311.93790.6198-0.40354.79620.062-0.2194-0.1595-0.13980.29910.081-0.1782-0.2181-0.36110.1596-0.1022-0.00830.29670.04330.207527.894522.579543.1106
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A1 - 290
2X-RAY DIFFRACTION2B1 - 290

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