7LT4

The aminoacrylate form of the beta-K167T mutant Tryptophan Synthase at 1.80 Angstrom resolution in complex with N-(4'-trifluoromethoxybenzenesulfonyl)-2-amino-1-ethylphosphate (F9F) at the enzyme alpha-site and cesium ion at the metal coordination site


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 7KWV 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.629850 mM Bicine-CsOH, 8% PEG 8,000, 4 mM Spermine, pH 7.6
Crystal Properties
Matthews coefficientSolvent content
2.5852.3

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 183.419α = 90
b = 59.426β = 94.76
c = 67.332γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IV++VariMax HighFlux2020-10-06MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU MICROMAX-007 HF1.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)R Sym I (Observed)Rrim I (All)Rpim I (All)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.79691.394970.0870.0870.1230.0686.33.365313
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Rrim I (All)Rpim I (All)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.81.9950.3110.3110.4150.22923.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT7KWV1.829.711.3564933337996.70.20070.19840.241926.9219
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4910
Nucleic Acid Atoms
Solvent Atoms479
Heterogen Atoms122

Software

Software
Software NamePurpose
xia2data reduction
SCALAdata scaling
MOLREPphasing
PHENIXrefinement
PDB_EXTRACTdata extraction