1C3E

NEW INSIGHTS INTO INHIBITOR DESIGN FROM THE CRYSTAL STRUCTURE AND NMR STUDIES OF E. COLI GAR TRANSFORMYLATE IN COMPLEX WITH BETA-GAR AND 10-FORMYL-5,8,10-TRIDEAZAFOLIC ACID.


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.2295PEG 3350, Imidazole malate, calcium chloride, MPD, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 22.0K
Crystal Properties
Matthews coefficientSolvent content
2.2745.92

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 40.25α = 90
b = 112.79β = 101.5
c = 46.96γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray94IMAGE PLATEMARRESEARCH1997-07-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL9-1SSRLBL9-1

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
12.12099.20.083132.92374223742-318.5
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)
2.12.1799.30.4212.82338

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONTHROUGHOUT2.1202237421888291778.90.2270.2270.263RANDOM31.6
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]
-7.74.311.05-3.35
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d22.3
c_scangle_it2.67
c_mcangle_it2.14
c_scbond_it1.84
c_angle_deg1.5
c_mcbond_it1.33
c_improper_angle_d1.01
c_bond_d0.011
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3236
Nucleic Acid Atoms
Solvent Atoms197
Heterogen Atoms106

Software

Software
Software NamePurpose
AMoREphasing
CNSrefinement
MAR345data collection
DENZOdata reduction
SCALEPACKdata scaling