X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Temperature 277.0
Details DIHYDRO-NICOTINAMIDE-ADENINE- DINUCLEOTIDE PHOSPHATE (NADPH), 5-[(4-METHYLPHENYL) SULFANYL]-2,4-QUINAZOLINEDIAMINE (GW578), PEG-3350, POTASSIUM 4-MORPHILINEETHANESULFONIC ACID (MES), DITHIOTHREITOL (DTT). A THREE-FOLD EXCESS OF GW578 AND THREE-FOLD EXCESS OF NADPH WAS ADDED TO THE C. ALBICANS DHFR SOLUTION AND LET STAND 277K OVERNIGHT. 17-20 MG/ML C. ALBICANS DHFR IN 50 UM GW578, 50 UM NADPH, 20 MM KMES, 1 MM DTT, PH 6.5 WAS MIXED WITH AN EQUAL PART OF 26 - 34% PEG-3350, THE RESERVOIR SOLUTION. , VAPOR DIFFUSION, HANGING DROP

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 76.91 α = 90
b = 67.28 β = 93.07
c = 38.49 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR XENTRONICS MONOCHROMATOR 1989-02-22
Diffraction Radiation
Monochromator Protocol
Huber graphite monochromator SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ELLIOTT GX-21 -- -- --

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
1.76 -- 93.5 0.0761 0.0761 -- 3.83 137080 35749 0.0 -3.0 30.7
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
1.76 1.87 69.6 0.2983 0.2983 1.82 2.17 4426

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
DIRECT REPLACEMENT 1.82 10.0 0.0 2.0 35749 31067 -- 93.5 0.16 0.16 0.16 -- --
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 1.82 1.93 3775 -- -- 0.173 -- -- --
X Ray Diffraction 1.93 2.1 5456 -- -- 0.161 -- -- --
X Ray Diffraction 2.1 2.3 5023 -- -- 0.157 -- -- --
X Ray Diffraction 2.3 2.64 5638 -- -- 0.165 -- -- --
X Ray Diffraction 2.64 3.3 5546 -- -- 0.16 -- -- --
X Ray Diffraction 3.3 10.0 5629 -- -- 0.157 -- -- --
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model Konnert, J.H. & Hendrickson, W.A. (1980) Acta Crystallogr. A A36, 344.
RMS Deviations
Key Refinement Restraint Deviation
p_staggered_tor 14.6
p_multtor_nbd 0.148
p_chiral_restr 0.247
p_angle_d 0.032
p_mcbond_it 4.215
p_transverse_tor 30.6
p_bond_d 0.021
p_xyhbond_nbd 0.133
p_mcangle_it 4.682
p_planar_tor 3.6
p_scbond_it 5.522
p_singtor_nbd 0.166
p_scangle_it 6.486
p_planar_d 0.038
p_plane_restr 0.02
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3185
Nucleic Acid Atoms 0
Heterogen Atoms 160
Solvent Atoms 348

Software

Software
Software Name Purpose
X-GEN data reduction
FRODO model building
PROFFT refinement
X-GEN data scaling