X-RAY DIFFRACTION

Crystallization Details
Method pH Temprature Details
X-RAY DIFFRACTION 7.5 ? CPA FROM SIGMA #C0261 WAS DISSOLVED IN 1.0 M LICL WITH 20 MM TRIS-HCL PH 7.5 TO GIVE 12 MG/ML AND USED WITHOUT FURTHER PURIFICATION. THIS PROTEIN SOLUTION WAS PLACED IN 50 MICROL DIALYSIS BUTTONS FROM HAMPTON RESEARCH AND DIALYZED AGAINST A 2 ML RESERVOIR OF THE ABOVE MENTIONED BUFFER WHILE LOWERING THE EXTERNAL LICL CONCENTRATION BY 25% EVERY OTHER DAY. THE CRYSTALS APPEARED A~0.24 M LICL AND WAS STORED AT 0.30M LICL. IF THIS PROCEDURE DOES NOT WORK BY ITSELF AND YOU END UP WITH THE MONOCLINIC ALPHA-FORM (1-307), YOU CAN TRY TO AD TRACES OF TRYPSIN (~10 MICROG/ML) TO THE PROTEIN SOLUTION TO PROVOKE FORMATION OF THE BETA-FORM (3-307), micro dialysis
Unit Cell:
a: 48.790 Å b: 66.850 Å c: 96.020 Å α: 90.00° β: 90.00° γ: 90.00°
Symmetry:
Space Group: P 21 21 21
Crystal Properties:
Matthew's Coefficient: 2.25 Solvent Content: 45
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 2.00 8.00 20060 977 93.4 0.167 0.226 15.8
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
2.00 40.0 94.1 0.038 0.038 30.7 4.3 ? 20453 ? ? 19.0
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 2.00 2.03 67.7 ? 0.157 7.1 3.9 ?
Diffraction
Diffraction experiment
Crystal ID Scattering Type Data Collection Temprature Detector Detector Type Details Collection Date Monochromator Protocol
1 290 K
Radiation Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200 ? ? ?
Software
Software Name Purpose Version
DENZO data reduction .
SCALEPACK data scaling .
AMoRE phasing .
X-PLOR refinement 3.851