1VIE

STRUCTURE OF DIHYDROFOLATE REDUCTASE


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.5CRYSTALS WERE GROWN FROM HANGING- DROPS CONTAINING PROTEIN AT A FINAL CONCENTRATION OF ABOUT 15 MG/ML IN 100 MM TRIS-HCL BUFFER AT PH 7.5 AND 25% 2-METHYL-2,4-PENTANEDIOL (MPD). DROPS WERE EQUILIBRATED AGAINST A RESERVOIR CONTAINING 100 MM KH2PO4 BUFFER AT PH 6.8 AND 50% MPD., vapor diffusion - hanging drop
Crystal Properties
Matthews coefficientSolvent content
240

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 68.74α = 90
b = 68.74β = 90
c = 52.45γ = 90
Symmetry
Space GroupI 41 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray277AREA DETECTORXUONG-HAMLIN MULTIWIRE1991-10-15M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RUH2R

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym 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
11.710980.0361347060410.4
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.71.76970.109533

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (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 DIFFRACTIONMIR1.71026732940.1920.19218.4
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]
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d16.8
x_angle_deg2.7
x_bond_d0.016
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d16.8
x_angle_deg2.7
x_bond_d0.016
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms457
Nucleic Acid Atoms
Solvent Atoms58
Heterogen Atoms

Software

Software
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
UCSDdata reduction
UCSDdata scaling
X-PLORphasing