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- PDB-1tog: Hydrocinnamic acid-bound structure of SRHEPT + A293D mutant of E.... -

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Basic information

Entry
Database: PDB / ID: 1tog
TitleHydrocinnamic acid-bound structure of SRHEPT + A293D mutant of E. coli aspartate aminotransferase
ComponentsAspartate aminotransferase
KeywordsTRANSFERASE / aspartate aminotransferase hexamutant / SRHEPT
Function / homology
Function and homology information


L-phenylalanine biosynthetic process from chorismate via phenylpyruvate / L-tyrosine-2-oxoglutarate transaminase activity / L-phenylalanine biosynthetic process / aspartate transaminase / L-aspartate:2-oxoglutarate aminotransferase activity / pyridoxal phosphate binding / protein homodimerization activity / identical protein binding / cytoplasm / cytosol
Similarity search - Function
Aspartate/other aminotransferase / Aminotransferases, class-I, pyridoxal-phosphate-binding site / Aminotransferases class-I pyridoxal-phosphate attachment site. / Aminotransferase, class I/classII / Aminotransferase class I and II / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase; domain 2 / Type I PLP-dependent aspartate aminotransferase-like (Major domain) / Pyridoxal phosphate-dependent transferase, small domain ...Aspartate/other aminotransferase / Aminotransferases, class-I, pyridoxal-phosphate-binding site / Aminotransferases class-I pyridoxal-phosphate attachment site. / Aminotransferase, class I/classII / Aminotransferase class I and II / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase; domain 2 / Type I PLP-dependent aspartate aminotransferase-like (Major domain) / Pyridoxal phosphate-dependent transferase, small domain / Pyridoxal phosphate-dependent transferase, major domain / Pyridoxal phosphate-dependent transferase / Alpha-Beta Complex / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
HYDROCINNAMIC ACID / Aspartate aminotransferase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.31 Å
AuthorsChow, M.A. / McElroy, K.E. / Corbett, K.D. / Berger, J.M. / Kirsch, J.F.
CitationJournal: Biochemistry / Year: 2004
Title: Narrowing substrate specificity in a directly evolved enzyme: the A293D mutant of aspartate aminotransferase
Authors: Chow, M.A. / McElroy, K.E. / Corbett, K.D. / Berger, J.M. / Kirsch, J.F.
History
DepositionJun 14, 2004Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 5, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Advisory / Version format compliance
Revision 1.3Oct 27, 2021Group: Database references / Derived calculations
Category: database_2 / struct_conn ...database_2 / 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 / _struct_conn.pdbx_leaving_atom_flag / _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
Revision 1.5Nov 15, 2023Group: Data collection / Category: chem_comp_atom / chem_comp_bond / Item: _chem_comp_atom.atom_id / _chem_comp_bond.atom_id_2

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Aspartate aminotransferase
B: Aspartate aminotransferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)88,0394
Polymers87,7392
Non-polymers3002
Water2,468137
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area7540 Å2
ΔGint-13 kcal/mol
Surface area28840 Å2
MethodPISA
Unit cell
Length a, b, c (Å)151.378, 151.378, 79.724
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number173
Space group name H-MP63
DetailsThe biological assembly is a dimer, which is found in the asymmetric unit

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Components

#1: Protein Aspartate aminotransferase / Transaminase A / ASPAT


Mass: 43869.289 Da / Num. of mol.: 2 / Mutation: A12T,P13T,N34D,T109S,G261A,S285G,A293D,N297S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: ASPC, B0928 / Plasmid: pJO2 / Production host: Escherichia coli (E. coli) / Strain (production host): MG204 / References: UniProt: P00509, aspartate transaminase
#2: Chemical ChemComp-HCI / HYDROCINNAMIC ACID / 3PP / 3-PHENYLPROPIONIC ACID


Mass: 150.174 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C9H10O2
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 137 / 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: 3.02 Å3/Da / Density % sol: 59 %
Crystal growTemperature: 294 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: potassium phosphate, PLP, EDTA, DTT, PEG 400, N-methylmorpholine, ammonium sulfate, hydrocinnamic acid, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 8.3.1 / Wavelength: 1.12 Å
DetectorType: ADSC QUANTUM 210 / Detector: CCD / Date: Mar 7, 2004
RadiationMonochromator: Double Crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.12 Å / Relative weight: 1
ReflectionResolution: 2.3→30 Å / Num. all: 44493 / Num. obs: 44493 / % possible obs: 96.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 7.1 % / Rsym value: 0.059 / Net I/σ(I): 28.6
Reflection shellResolution: 2.3→2.38 Å / Redundancy: 6.7 % / Mean I/σ(I) obs: 14.4 / Num. unique all: 4513 / Rsym value: 0.136 / % possible all: 99.1

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Processing

Software
NameVersionClassification
REFMAC5.2.0003refinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1AHX

1ahx


Resolution: 2.31→30 Å / Cor.coef. Fo:Fc: 0.946 / Cor.coef. Fo:Fc free: 0.913 / SU B: 6.891 / SU ML: 0.141 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.268 / ESU R Free: 0.213 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.23151 2255 5.1 %RANDOM
Rwork0.18486 ---
all0.18723 42219 --
obs0.18723 42219 96.6 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 26.402 Å2
Baniso -1Baniso -2Baniso -3
1-0.68 Å20.34 Å20 Å2
2--0.68 Å20 Å2
3----1.02 Å2
Refinement stepCycle: LAST / Resolution: 2.31→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6170 0 22 137 6329
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0140.0226302
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.5061.9498520
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.0685778
X-RAY DIFFRACTIONr_dihedral_angle_2_deg33.72224.267300
X-RAY DIFFRACTIONr_dihedral_angle_3_deg19.364151038
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.6571544
X-RAY DIFFRACTIONr_chiral_restr0.120.2940
X-RAY DIFFRACTIONr_gen_planes_refined0.0070.024810
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.2660.23028
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.3130.24261
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1590.2324
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2380.244
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1140.26
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_mcbond_it0.9821.54026
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.62226244
X-RAY DIFFRACTIONr_scbond_it2.81832599
X-RAY DIFFRACTIONr_scangle_it4.3014.52276
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.305→2.365 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.262 161 -
Rwork0.21 3158 -
obs-3319 98.69 %
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)
11.3341-0.51790.16390.8605-0.49121.1094-0.0576-0.06970.17270.11690.0453-0.0423-0.31550.03660.01240.00730.0197-0.0112-0.0472-0.0106-0.009246.851297.9575-0.2802
21.8961-0.19930.29551.3811-0.85623.03130.0220.22880.0779-0.126-0.0626-0.0156-0.0730.05770.0406-0.04240.00590.0164-0.03350.061-0.053350.218696.3874-26.9055
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
1X-RAY DIFFRACTION1AA48 - 32544 - 313
2X-RAY DIFFRACTION2AA15 - 4711 - 43
3X-RAY DIFFRACTION2AA326 - 409314 - 396

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