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- PDB-1k7x: CRYSTAL STRUCTURE OF THE BETA-SER178PRO MUTANT OF TRYPTOPHAN SYNTHASE -

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Basic information

Entry
Database: PDB / ID: 1k7x
TitleCRYSTAL STRUCTURE OF THE BETA-SER178PRO MUTANT OF TRYPTOPHAN SYNTHASE
Components
  • TRYPTOPHAN SYNTHASE ALPHA CHAIN
  • TRYPTOPHAN SYNTHASE BETA CHAIN
KeywordsLYASE / CARBON-OXYGEN LYASE / TRYPTOPHAN BIOSYNTHESIS / PYRIDOXAL PHOSPHATE
Function / homology
Function and homology information


tryptophan synthase / tryptophan synthase activity / tryptophan biosynthetic process / identical protein binding / cytosol / cytoplasm
Similarity search - Function
Tryptophan synthase, alpha chain / Tryptophan synthase, alpha chain, active site / Tryptophan synthase alpha chain / Tryptophan synthase alpha chain signature. / Tryptophan synthase, beta chain, conserved site / Tryptophan synthase, beta chain / Tryptophan synthase beta chain/beta chain-like / Tryptophan synthase beta chain pyridoxal-phosphate attachment site. / Rossmann fold - #1100 / Pyridoxal-phosphate dependent enzyme ...Tryptophan synthase, alpha chain / Tryptophan synthase, alpha chain, active site / Tryptophan synthase alpha chain / Tryptophan synthase alpha chain signature. / Tryptophan synthase, beta chain, conserved site / Tryptophan synthase, beta chain / Tryptophan synthase beta chain/beta chain-like / Tryptophan synthase beta chain pyridoxal-phosphate attachment site. / Rossmann fold - #1100 / Pyridoxal-phosphate dependent enzyme / Tryptophan synthase beta subunit-like PLP-dependent enzyme / Pyridoxal-phosphate dependent enzyme / Ribulose-phosphate binding barrel / Aldolase class I / Aldolase-type TIM barrel / TIM Barrel / Alpha-Beta Barrel / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
PYRIDOXAL-5'-PHOSPHATE / Tryptophan synthase alpha chain / Tryptophan synthase beta chain
Similarity search - Component
Biological speciesSalmonella typhimurium (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.7 Å
AuthorsWeyand, M. / Schlichting, I. / Marabotti, A. / Mozzarelli, A.
CitationJournal: J.Biol.Chem. / Year: 2002
Title: Crystal structure of the beta Ser178--> Pro mutant of tryptophan synthase. A "knock-out" allosteric enzyme.
Authors: Weyand, M. / Schlichting, I. / Herde, P. / Marabotti, A. / Mozzarelli, A.
History
DepositionOct 22, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 19, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Oct 27, 2021Group: Database references / Derived calculations
Category: database_2 / pdbx_struct_conn_angle ...database_2 / pdbx_struct_conn_angle / 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_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_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_leaving_atom_flag / _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_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_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 16, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: TRYPTOPHAN SYNTHASE ALPHA CHAIN
B: TRYPTOPHAN SYNTHASE BETA CHAIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)71,7674
Polymers71,4972
Non-polymers2702
Water7,819434
1
A: TRYPTOPHAN SYNTHASE ALPHA CHAIN
B: TRYPTOPHAN SYNTHASE BETA CHAIN
hetero molecules

A: TRYPTOPHAN SYNTHASE ALPHA CHAIN
B: TRYPTOPHAN SYNTHASE BETA CHAIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)143,5338
Polymers142,9934
Non-polymers5404
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_655-x+1,y,-z1
Unit cell
Length a, b, c (Å)184.006, 59.986, 67.537
Angle α, β, γ (deg.)90.00, 94.65, 90.00
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11B-758-

HOH

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Components

#1: Protein TRYPTOPHAN SYNTHASE ALPHA CHAIN


Mass: 28698.797 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Salmonella typhimurium (bacteria) / Gene: TRPA/TRPB / Plasmid: PSTB7 / Production host: Escherichia coli (E. coli) / Strain (production host): CB149 / References: UniProt: P00929, tryptophan synthase
#2: Protein TRYPTOPHAN SYNTHASE BETA CHAIN


Mass: 42797.723 Da / Num. of mol.: 1 / Mutation: S178P
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Salmonella typhimurium (bacteria) / Gene: TRPA/TRPB / Plasmid: PSTB7 / Production host: Escherichia coli (E. coli) / Strain (production host): CB149 / References: UniProt: P0A2K1, tryptophan synthase
#3: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na
#4: Chemical ChemComp-PLP / PYRIDOXAL-5'-PHOSPHATE / VITAMIN B6 Phosphate / Pyridoxal phosphate


Mass: 247.142 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H10NO6P
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 434 / 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: 2.6 Å3/Da / Density % sol: 52.63 %
Crystal growpH: 7.8 / Details: pH 7.80
Crystal grow
*PLUS
pH: 7.8 / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
110 mg/mlprotein1drop
250 mMsodium bicine1droppH7.8
310 mMsodium-EDTA1drop
41 mMdithiothreitol1drop
50.020 mMpyridoxal 5-phosphate1drop
69-12 %PEG80001reservoir
71.5 mMspermine1reservoir
81 mMEDTA1reservoir
950 mMBicine1reservoirpH7.8

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID14-1 / Wavelength: 0.934
DetectorType: MARRESEARCH / Detector: CCD / Date: Nov 10, 2000
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.934 Å / Relative weight: 1
ReflectionResolution: 1.7→31 Å / Num. obs: 78258 / % possible obs: 96.8 % / Observed criterion σ(I): -3 / Redundancy: 2.991 % / Rsym value: 0.103 / Net I/σ(I): 9.64
Reflection shellResolution: 1.7→1.8 Å / Mean I/σ(I) obs: 2.87 / Rsym value: 0.366 / % possible all: 95.9
Reflection
*PLUS
Highest resolution: 1.7 Å / Lowest resolution: 45.9 Å / Observed criterion σ(I): -3 / Num. measured all: 234033 / Rmerge(I) obs: 0.103
Reflection shell
*PLUS
% possible obs: 95.9 % / Rmerge(I) obs: 0.366 / Mean I/σ(I) obs: 2.87

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Processing

Software
NameClassification
CNSrefinement
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1QOP

1qop


Resolution: 1.7→20 Å / SU B: 2.50271 / SU ML: 0.08336 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.10364 / ESU R Free: 0.1117
RfactorNum. reflection% reflectionSelection details
Rfree0.2385 3972 5.1 %RANDOM
Rwork0.18685 ---
obs0.18944 74247 96.8 %-
Displacement parametersBiso mean: 21.839 Å2
Baniso -1Baniso -2Baniso -3
1--1.05 Å20 Å2-0.28 Å2
2--1.69 Å20 Å2
3----0.68 Å2
Refinement stepCycle: LAST / Resolution: 1.7→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4870 0 16 434 5320
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONp_bond_d0.0590.021
X-RAY DIFFRACTIONp_angle_d
X-RAY DIFFRACTIONp_angle_deg
X-RAY DIFFRACTIONp_planar_d
X-RAY DIFFRACTIONp_hb_or_metal_coord0.10.5
X-RAY DIFFRACTIONp_mcbond_it3.1111.5
X-RAY DIFFRACTIONp_mcangle_it4.2242
X-RAY DIFFRACTIONp_scbond_it6.3813
X-RAY DIFFRACTIONp_scangle_it9.2944.5
X-RAY DIFFRACTIONp_plane_restr0.0120.02
X-RAY DIFFRACTIONp_chiral_restr0.3870.2
X-RAY DIFFRACTIONp_singtor_nbd
X-RAY DIFFRACTIONp_multtor_nbd
X-RAY DIFFRACTIONp_xhyhbond_nbd
X-RAY DIFFRACTIONp_xyhbond_nbd0.1440.5
X-RAY DIFFRACTIONp_planar_tor
X-RAY DIFFRACTIONp_staggered_tor
X-RAY DIFFRACTIONp_orthonormal_tor
X-RAY DIFFRACTIONp_transverse_tor
X-RAY DIFFRACTIONp_special_tor
Refinement
*PLUS
Highest resolution: 1.7 Å / % reflection Rfree: 5 % / Rfactor obs: 0.189 / Rfactor Rfree: 0.239 / Rfactor Rwork: 0.187
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONp_angle_d
X-RAY DIFFRACTIONp_angle_deg4.1

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