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- PDB-5kr3: Directed Evolution of Transaminases By Ancestral Reconstruction. ... -

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Basic information

Entry
Database: PDB / ID: 5kr3
TitleDirected Evolution of Transaminases By Ancestral Reconstruction. Using Old Proteins for New Chemistries
Components4-aminobutyrate transaminase
KeywordsTRANSFERASE / phylogenetics / directed evolution / transaminase / protein engineering
Function / homologyAspartate Aminotransferase, domain 1 / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase; domain 2 / Type I PLP-dependent aspartate aminotransferase-like (Major domain) / Alpha-Beta Complex / 3-Layer(aba) Sandwich / Alpha Beta / PYRIDOXAL-5'-PHOSPHATE
Function and homology information
Biological speciesPseudomonas (RNA similarity group I)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.95 Å
AuthorsWilding, M. / Newman, J. / Peat, T.S. / Scott, C.
CitationJournal: Green Chemistry / Year: 2017
Title: Reverse engineering: transaminase biocatalyst development using ancestral sequence reconstruction
Authors: Wilding, M. / Peat, T.S. / Kalyaanamoorthy, S. / Newman, J. / Scott, C. / Jermiin, L.S.
History
DepositionJul 6, 2016Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 12, 2017Provider: repository / Type: Initial release
Revision 1.1Jan 30, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.journal_abbrev / _citation.journal_id_CSD ..._citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_volume / _citation.page_first / _citation.pdbx_database_id_DOI / _citation.title / _citation.year
Revision 1.2Oct 4, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_ncs_dom_lim
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 4-aminobutyrate transaminase
B: 4-aminobutyrate transaminase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)104,5904
Polymers104,0962
Non-polymers4942
Water8,035446
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area11950 Å2
ΔGint-84 kcal/mol
Surface area28590 Å2
MethodPISA
Unit cell
Length a, b, c (Å)63.523, 122.162, 64.296
Angle α, β, γ (deg.)90.00, 116.46, 90.00
Int Tables number4
Space group name H-MP1211
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21B

NCS domain segments:

Component-ID: _ / Ens-ID: 1 / Beg auth comp-ID: GLN / Beg label comp-ID: GLN / End auth comp-ID: LEU / End label comp-ID: LEU / Refine code: _ / Auth seq-ID: 2 - 459 / Label seq-ID: 22 - 479

Dom-IDAuth asym-IDLabel asym-ID
1AA
2BB

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Components

#1: Protein 4-aminobutyrate transaminase


Mass: 52048.000 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Pseudomonas (RNA similarity group I) / Plasmid: pET / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 / References: beta-alanine-pyruvate transaminase
#2: Chemical ChemComp-PLP / PYRIDOXAL-5'-PHOSPHATE / VITAMIN B6 Phosphate


Mass: 247.142 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: C8H10NO6P / References: beta-alanine-pyruvate transaminase
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 446 / 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: 2.15 Å3/Da / Density % sol: 42.67 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop
Details: 150 plus 150 nL drops with protein at 10 mg/mL and reservoir conditions of 20% PEG 3350, 135 mM ammonium formate. Microseeds were used for nucleation.

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: Australian Synchrotron / Beamline: MX2 / Wavelength: 0.9537 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Feb 18, 2014
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9537 Å / Relative weight: 1
ReflectionResolution: 1.95→41.9 Å / Num. obs: 63517 / % possible obs: 98.9 % / Redundancy: 7.3 % / CC1/2: 0.998 / Rmerge(I) obs: 0.077 / Net I/σ(I): 20.4
Reflection shellResolution: 1.95→1.99 Å / Redundancy: 7 % / Rmerge(I) obs: 0.665 / Mean I/σ(I) obs: 3.4 / CC1/2: 0.965 / % possible all: 96.3

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Processing

Software
NameVersionClassification
REFMAC5.8.0155refinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 5kqt

5kqt


Resolution: 1.95→41.9 Å / Cor.coef. Fo:Fc: 0.886 / Cor.coef. Fo:Fc free: 0.844 / SU B: 4.033 / SU ML: 0.113 / Cross valid method: THROUGHOUT / ESU R: 0.227 / ESU R Free: 0.186 / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.25746 3091 5 %RANDOM
Rwork0.21922 ---
obs0.22115 58359 95.68 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å
Displacement parametersBiso mean: 18.225 Å2
Baniso -1Baniso -2Baniso -3
1-0.09 Å2-0 Å20.97 Å2
2---1.7 Å2-0 Å2
3---0.43 Å2
Refinement stepCycle: 1 / Resolution: 1.95→41.9 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7006 0 30 446 7482
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0130.0197257
X-RAY DIFFRACTIONr_bond_other_d0.0020.026857
X-RAY DIFFRACTIONr_angle_refined_deg1.5631.9549855
X-RAY DIFFRACTIONr_angle_other_deg0.994315776
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.2525923
X-RAY DIFFRACTIONr_dihedral_angle_2_deg32.17923.628317
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.96151156
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.561543
X-RAY DIFFRACTIONr_chiral_restr0.0950.21060
X-RAY DIFFRACTIONr_gen_planes_refined0.0070.0218306
X-RAY DIFFRACTIONr_gen_planes_other0.0020.021653
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_it1.0771.6913686
X-RAY DIFFRACTIONr_mcbond_other1.0771.6913685
X-RAY DIFFRACTIONr_mcangle_it1.5782.5294611
X-RAY DIFFRACTIONr_mcangle_other1.5782.534612
X-RAY DIFFRACTIONr_scbond_it1.6831.9123571
X-RAY DIFFRACTIONr_scbond_other1.6821.9123572
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other2.5872.7935245
X-RAY DIFFRACTIONr_long_range_B_refined4.06232.63531228
X-RAY DIFFRACTIONr_long_range_B_other4.03132.59530951
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
Refine LS restraints NCS

Ens-ID: 1 / Number: 29514 / Refine-ID: X-RAY DIFFRACTION / Type: interatomic distance / Rms dev position: 0.06 Å / Weight position: 0.05

Dom-IDAuth asym-ID
1A
2B
LS refinement shellResolution: 1.946→1.997 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.412 198 -
Rwork0.36 3768 -
obs--83.71 %

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