X-RAY DIFFRACTION

Crystallization Details
Method pH Temprature Details
X-RAY DIFFRACTION 5 291 Buffer Composition (prepared in D2O instead of H2O):16% PEG 6000,1 M LiCl,0.1 M sodium acetate, pD 5 Initial Sitting Drop Setup: Mixed 20 uL of a protein solution containing: 9.6 mg/mL perdeuterated LecA, 5 mM Gal-d10, 5 uM calcium chloride (CaCl2),all dissolved in D2O. With 20 uL of the well solution. Crystal Growth & Feeding Process: Crystals initially appeared after 1 week. To promote further growth, the crystal was fed three times, each time with 5 uL of a pre-equilibrated drop prepared under the same conditions. Each feeding occurred one week apart, starting one week after initial crystal formation. This feeding strategy increased the crystal volume from 0.08 mm3 to 0.74 mm3.
Unit Cell:
a: 50.799 Å b: 106.522 Å c: 83.303 Å α: 90.000° β: 94.634° γ: 90.000°
Symmetry:
Space Group: P 1 21 1
Crystal Properties:
Matthew's Coefficient: 2.21 Solvent Content: 44.29
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 FREE R-VALUE 1.49 41.52 141805 3972 98.68 0.1581 0.1851 31.74
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
1.49 44.83 98.8 0.09 ? 13.0 5.4 ? 142031 ? ? ?
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 1.49 1.52 99.4 ? ? 0.9 5.3 ?
Diffraction
Diffraction experiment
Crystal ID Scattering Type Data Collection Temprature Detector Detector Type Details Collection Date Monochromator Protocol
1 291 K ?
Radiation Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE BM07 0.92 ESRF BM07
Software
Software Name Purpose Version
XDS data reduction .
Aimless data scaling 0.7.15
PHASER phasing 2.8.3
PHENIX refinement 1.17.1
LAUEGEN data reduction .
LSCALE data scaling .
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