2FZK

The Structure of Wild-Type E. Coli Aspartate Transcarbamoylase in Complex with Novel T State Inhibitors at 2.50 Resolution


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1ZA2pdb entry 1ZA2

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1MICRODIALYSIS5.7298ATCase holoenzyme was crystallized by microdialysis, using 50 L wells. The enzyme solution, at ~18 mg/mL, was dialyzed against a solution of 40 mM citric acid, 3 mM sodium azide, 1 mM 2-mercaptoethanol, 1 mM cytidine 5 -triphosphate, 0.2 mM EDTA (pH 5.7), MICRODIALYSIS, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.957.59

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 120.9α = 90
b = 120.9β = 90
c = 141.61γ = 120
Symmetry
Space GroupP 3 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray110IMAGE PLATERIGAKU RAXIS IV2005-03-31MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU2001.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)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
12.528.4599.10.075134.964190241523
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.52.5999.60.373.94.784143

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTpdb entry 1ZA22.528.4541902414744211990.2110.2110.2110.2389random
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 Atoms7216
Nucleic Acid Atoms
Solvent Atoms529
Heterogen Atoms110

Software

Software
Software NamePurpose
CrystalCleardata collection
d*TREKdata reduction
AMoREphasing
CNSrefinement
CrystalCleardata reduction
d*TREKdata scaling