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- PDB-1ars: X-RAY CRYSTALLOGRAPHIC STUDY OF PYRIDOXAL 5'-PHOSPHATE-TYPE ASPAR... -

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Basic information

Entry
Database: PDB / ID: 1ars
TitleX-RAY CRYSTALLOGRAPHIC STUDY OF PYRIDOXAL 5'-PHOSPHATE-TYPE ASPARTATE AMINOTRANSFERASES FROM ESCHERICHIA COLI IN OPEN AND CLOSED FORM
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 / cytosol / cytoplasm
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
PYRIDOXAL-5'-PHOSPHATE / Aspartate aminotransferase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / Resolution: 1.8 Å
AuthorsOkamoto, A. / Higuchi, T. / Hirotsu, K.
Citation
Journal: J.Biochem.(Tokyo) / Year: 1994
Title: X-ray crystallographic study of pyridoxal 5'-phosphate-type aspartate aminotransferases from Escherichia coli in open and closed form.
Authors: Okamoto, A. / Higuchi, T. / Hirotsu, K. / Kuramitsu, S. / Kagamiyama, H.
History
DepositionAug 2, 1993Processing site: BNL
Revision 1.0Aug 31, 1994Provider: 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 29, 2017Group: Derived calculations / Other
Category: pdbx_database_status / struct_conf / struct_conf_type
Item: _pdbx_database_status.process_site
Revision 1.4Mar 26, 2025Group: 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 / struct_conn / 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_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: ASPARTATE AMINOTRANSFERASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)43,8662
Polymers43,6191
Non-polymers2471
Water2,288127
1
A: ASPARTATE AMINOTRANSFERASE
hetero molecules

A: ASPARTATE AMINOTRANSFERASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)87,7334
Polymers87,2382
Non-polymers4942
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation4_555x,-y,-z1
Buried area7130 Å2
ΔGint-25 kcal/mol
Surface area29390 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)155.420, 87.130, 79.400
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221
Atom site foot note1: CIS PROLINE - PRO 138 / 2: CIS PROLINE - PRO 195
3: RESIDUE PLP 413 IS A PYRIDOXAL-5'-PHOSPHATE, AND AS A COFACTOR, MAKES A SCHIFF BASE WITH LYS 258.

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Components

#1: Protein ASPARTATE AMINOTRANSFERASE


Mass: 43619.215 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / 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: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 127 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 3.08 Å3/Da / Density % sol: 60.07 %
Crystal grow
*PLUS
Temperature: 20 ℃ / pH: 7 / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
10.9 mMenzyme1drop
210 mMpotassium phosphate1drop
30.01 mMPLP1drop
41 mMEDTA1drop
50.3 mM1dropNaN3
610 mMpotassium phosphate1reservoir
70.01 mMPLP1reservoir
81 mMEDTA1reservoir
90.3 mM1reservoirNaN3
101 Msodium sulfate1reservoir

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Data collection

RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
RefinementHighest resolution: 1.8 Å / σ(F): 4 /
RfactorNum. reflection
Rwork0.213 -
obs0.213 29267
Refinement stepCycle: LAST / Highest resolution: 1.8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3069 0 15 127 3211
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.016
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_deg
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
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
Software
*PLUS
Name: X-PLOR / Classification: refinement
Refinement
*PLUS
Lowest resolution: 6 Å / Rfactor obs: 0.213 / Rfactor Rwork: 0.213
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Type: x_angle_deg / Dev ideal: 3.3

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