X-RAY DIFFRACTION

Crystallization Details
Method pH Temprature Details
X-RAY DIFFRACTION 8 293.15 1:1 v/v mixing ratio of 30 mg/ml of purified E. coli DHFR in 20mM Tris pH 8, 1mM DTT and reservoir solution containing 0.1M Imidazole pH8, 50mM Calcium acetate and 20% PEG 6000.
Unit Cell:
a: 34.876 Å b: 58.749 Å c: 79.324 Å α: 90.000° β: 90.000° γ: 90.000°
Symmetry:
Space Group: P 21 21 21
Crystal Properties:
Matthew's Coefficient: 2.16 Solvent Content: 42.94
Refinement Statistics
Diffraction ID Structure Solution Method Cross Validation Method Resolution Limit (High) Resolution Limit (Low) Number of Reflections (Observed) Number of Reflections (R-free) Percent Reflections (Observed) R-Work R-Free Mean Isotropic
X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 1.3000 32.8720 40798 1995 99.7700 0.1771 0.2040 23.8400
Data Collection
Overall
Resolution Limit (High) Resolution Limit (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
1.090 32.872 79.600 0.095 ? 9.320 6.246 ? 54649 ? ? 16.210
Highest Resolution Shell
# Resolution Limits (Low) Resolution Limits (High) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
1 1.090 1.160 21.100 ? ? 0.160 2.507 ?
Diffraction
Diffraction experiment
Crystal ID Scattering Type Data Collection Temprature Detector Detector Type Details Collection Date Monochromator Protocol
1 100 K ?
Radiation Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON APS BEAMLINE 31-ID 0.97931 APS 31-ID
Software
Software Name Purpose Version
XDS data reduction .
XSCALE data scaling .
PHASER phasing .
PHENIX refinement .
PDB_EXTRACT data extraction 3.24