X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Dialysis
pH 7.5
Temperature 277.15
Details CRYSTALS GROWN AT 277 K IN 0.010 M TRIS-HCL PH 7.5, 0.012 M MGCL2, 0.002 M SPERMINE, 6% 1,6-HEXANEDIOL. CRYOPROTECTION CONDITIONS: AFTER WASHING IN FRESH CRYSTALLIZATION SOLUTION FOR 10 MIN AND ADDITION OF 30% MPD (V/V), CRYSTALS WERE FLASH-FROZEN IN LIQUID NITROGEN, DIALYSIS, temperature 277.15K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 55.25 α = 90
b = 32.99 β = 90.38
c = 61.88 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC -- 1999-04-20
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-4 -- ESRF ID14-4

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
2 25.8 88.6 -- 0.036 -- 3.1 13678 13678 0.0 0.0 29.3
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)
2.0 2.1 70.7 -- 0.171 2.2 2.6 --

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
-- 2.0 25.79 0.0 0.0 13678 13678 926 88.5 0.227 0.227 0.227 0.263 RANDOM
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 2.0 2.11 -- 101 1432 0.324 0.38 0.038 70.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 53.6
Anisotropic B[1][1] 1.86
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 3.76
Anisotropic B[2][2] -0.56
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -1.3
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 12.7
c_angle_deg 1.4
c_improper_angle_d 1.3
c_bond_d 0.009
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.32
Luzzati Sigma A (Observed) 0.29
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.42
Luzzati Sigma A (R-Free Set) 0.39
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 0
Nucleic Acid Atoms 1652
Heterogen Atoms 24
Solvent Atoms 220

Software

Software
Software Name Purpose
CNS refinement
DENZO data reduction
SCALEPACK data scaling
SOLVE phasing
CNS phasing