X-RAY DIFFRACTION

Crystallization Details
Method pH Temprature Details
X-RAY DIFFRACTION 4.8 293 CANDIDA ANTARCTICA LIPASE B (CALB) WAS PURCHASED BY HAMPTON RESEARCH AND CRYSTALLIZED WITHOUT FURTHER PURIFICATION. CRYSTALLIZATION TRIALS WERE PERFORMED AT 293 K USING THE HANGING-DROP METHOD USING A QUIAGEN EASYXTAL 15-WELL PLATE. 1 UL OF A 15 MG/ML CALB SOLUTION IN 20MM NA(CH3COO) PH = 4.8 WAS DILUTED WITH 1 UL OF THE PRECIPITANT SOLUTION, MADE OF 200MM NA(CH3COO) PH = 4.8, 20% (W/V) PEG4000, AND 10-13% (V/V) 2-PROPANOL. THE DROP WAS EQUILIBRATED BY VAPOR DIFFUSION AGAINST 500 ML OF THE PRECIPITANT SOLUTION. PROTEIN CRYSTALS OF NATIVE CALB APPEARED WITHIN ONE WEEK AND GREW TO A SIZE OF 0.2 X 0.4 X 0.5 MM3 IN THREE WEEKS.
Unit Cell:
a: 39.670 Å b: 48.940 Å c: 71.610 Å α: 88.74° β: 97.15° γ: 108.44°
Symmetry:
Space Group: P 1
Crystal Properties:
Matthew's Coefficient: 1.98 Solvent Content: 38
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 0.91 71.04 326301 17383 94.48 0.11255 0.13197 11.793
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
0.91 71.04 94.5 0.11 ? 13.65 17.2 ? 343684 ? 1.5 ?
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 0.91 0.93 77.4 ? 1.59 3.5
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 PETRA III, EMBL c/o DESY BEAMLINE P13 (MX1) ? PETRA III, EMBL c/o DESY P13 (MX1)
Software
Software Name Purpose Version
REFMAC refinement 5.8.0123
XDS data reduction .
Aimless data scaling .
MOLREP phasing .
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