1AI9

CANDIDA ALBICANS DIHYDROFOLATE REDUCTASE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOtherMURINE DHFR

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.517-20 MG/ML C. ALBICANS DHFR IN 20 MM KMES, 1 MM DTT, 0.1 MM EDTA, 20% GLYERCOL, PH 7.5 WAS MIXED WITH AN EQUAL PART OF 26 - 34% PEG-3350, THE RESERVOIR SOLUTION.
Crystal Properties
Matthews coefficientSolvent content
2.2743

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 77.2α = 90
b = 67.57β = 93.06
c = 38.66γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray295AREA DETECTORSIEMENSMONOCHROMATOR1987-05-16M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODEELLIOTT GX-21

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
11.8390.30.066416.94.46315202
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)
1.831.9583.50.35353.112.26

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTMURINE DHFR1.851023152028540900.199
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
p_transverse_tor32.4
p_staggered_tor17.6
p_planar_tor4.6
p_scangle_it2.588
p_scbond_it1.638
p_mcangle_it1.51
p_mcbond_it0.913
p_chiral_restr0.294
p_singtor_nbd0.172
p_multtor_nbd0.161
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor32.4
p_staggered_tor17.6
p_planar_tor4.6
p_scangle_it2.588
p_scbond_it1.638
p_mcangle_it1.51
p_mcbond_it0.913
p_chiral_restr0.294
p_singtor_nbd0.172
p_multtor_nbd0.161
p_xyhbond_nbd0.143
p_planar_d0.04
p_angle_d0.038
p_bond_d0.025
p_plane_restr0.022
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3196
Nucleic Acid Atoms
Solvent Atoms160
Heterogen Atoms96

Software

Software
Software NamePurpose
MERLOTphasing
PROFFTrefinement
XENGENdata reduction
XENGENdata scaling