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- PDB-1b4x: ASPARTATE AMINOTRANSFERASE FROM E. COLI, C191S MUTATION, WITH BOU... -

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Basic information

Entry
Database: PDB / ID: 1b4x
TitleASPARTATE AMINOTRANSFERASE FROM E. COLI, C191S MUTATION, WITH BOUND MALEATE
ComponentsASPARTATE AMINOTRANSFERASE
KeywordsTRANSFERASE / AMINOTRANSFERASE
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
MALEIC ACID / PYRIDOXAL-5'-PHOSPHATE / Aspartate aminotransferase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / OTHER / Resolution: 2.45 Å
AuthorsJeffery, C.J. / Gloss, L.M. / Petsko, G.A. / Ringe, D.
CitationJournal: Protein Eng. / Year: 2000
Title: The role of residues outside the active site: structural basis for function of C191 mutants of Escherichia coli aspartate aminotransferase.
Authors: Jeffery, C.J. / Gloss, L.M. / Petsko, G.A. / Ringe, D.
History
DepositionDec 30, 1998Processing site: BNL
Revision 1.0Oct 27, 2000Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Nov 3, 2021Group: Database references / Derived calculations / Other
Category: database_2 / pdbx_database_status ...database_2 / pdbx_database_status / 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_database_status.process_site / _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 2, 2023Group: Refinement description / Category: pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: ASPARTATE AMINOTRANSFERASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)43,9663
Polymers43,6031
Non-polymers3632
Water46826
1
A: ASPARTATE AMINOTRANSFERASE
hetero molecules

A: ASPARTATE AMINOTRANSFERASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)87,9336
Polymers87,2062
Non-polymers7264
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation4_555x,-y,-z1
Buried area8190 Å2
ΔGint-17 kcal/mol
Surface area29240 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)157.130, 86.690, 79.870
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221

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Components

#1: Protein ASPARTATE AMINOTRANSFERASE


Mass: 43603.148 Da / Num. of mol.: 1 / Fragment: COMPLETE SUBUNIT / Mutation: YES
Source method: isolated from a genetically manipulated source
Details: PYRIDOXAL PHOSPHATE COFACTOR COVALENTLY BOUND TO LYS 258 VIA SCHIFF BASE LINKAGE
Source: (gene. exp.) Escherichia coli (E. coli) / Cellular location: CYTOPLASM / Cellular location (production host): CYTOPLASM / Production host: Escherichia coli (E. coli) / References: UniProt: P00509, aspartate transaminase
#2: Chemical ChemComp-PLP / PYRIDOXAL-5'-PHOSPHATE / VITAMIN B6 Phosphate


Mass: 247.142 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H10NO6P
#3: Chemical ChemComp-MAE / MALEIC ACID


Mass: 116.072 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C4H4O4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 26 / 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: 3.1 Å3/Da / Density % sol: 61 %
Crystal growpH: 7.5 / Details: pH 7.50
Crystal grow
*PLUS
pH: 7.5 / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
16 mg/mlprotein1drop
220 mMpotassium phosphate1drop
30.01 mMPLP1drop
45 mMEDTA1drop
540-54 %ammonium sulfate1reservoir
620 mMpotassium phosphate1reservoir
75 mMinhibitor maleate1drop

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Data collection

DiffractionMean temperature: 297 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.5418
DetectorType: RIGAKU / Detector: IMAGE PLATE
RadiationMonochromator: NI FILTER / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.45→50 Å / Num. obs: 17708 / % possible obs: 86 % / Observed criterion σ(I): 0 / Redundancy: 1 % / Rmerge(I) obs: 0.059
Reflection shellHighest resolution: 2.45 Å
Reflection
*PLUS
Highest resolution: 2.45 Å / Lowest resolution: 50 Å / Observed criterion σ(I): 0 / Redundancy: 1 %

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Processing

Software
NameVersionClassification
X-PLOR3.851model building
X-PLOR3.851refinement
R-AXISdata reduction
R-AXISdata scaling
X-PLOR3.851phasing
RefinementMethod to determine structure: OTHER
Starting model: 1ASA

1asa


Resolution: 2.45→10 Å / Data cutoff high absF: 1000000 / Data cutoff low absF: 0 / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflection
Rwork0.207 --
obs0.207 17708 86 %
Displacement parametersBiso mean: 42.87 Å2
Refinement stepCycle: LAST / Resolution: 2.45→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3069 0 23 26 3118
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.018
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg3.52
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d25.51
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.79
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Xplor fileSerial no: 1 / Param file: PARHCSDX.PRO / Topol file: TOPHCSDX.PRO
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg25.51
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.79

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