X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.9
Temperature 293.0
Details 0.2 M Potassium Nitrate, 20% PEG 3350, pH 6.9, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 293K, pH 6.90

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 36 α = 67.2
b = 58.5 β = 92
c = 70.2 γ = 77.7
Symmetry
Space Group P 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 315 -- 2002-03-31
Diffraction Radiation
Monochromator Protocol
DOUBLE CRYSTAL MONOCHROMATOR MAD
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SSRL BEAMLINE BL9-2 0.979321, 0.978964, 0.918370 SSRL BL9-2

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 34.9 93.7 -- 0.068 -- 3.9 -- 32670 -- -3.0 29.5
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)
1.99 2.1 88.4 -- 0.27 3.8 3.9 --

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
MAD 2.0 25.0 -- 0.0 32670 32670 1631 94.6 -- 0.195 0.195 0.23 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 2.02 -- 59 913 0.2577 0.2875 -- --
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model ANISTROPIC
Mean Isotropic B 25.3
Anisotropic B[1][1] -2.522
Anisotropic B[1][2] 0.539
Anisotropic B[1][3] 5.397
Anisotropic B[2][2] 1.771
Anisotropic B[2][3] 1.869
Anisotropic B[3][3] 0.751
RMS Deviations
Key Refinement Restraint Deviation
c_scangle_it 3.972
c_scbond_it 2.652
c_mcangle_it 2.192
c_mcbond_it 1.483
c_bond_d 0.012
c_angle_deg 1.38
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Luzzati Sigma A (Observed) 0.13
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.26
Luzzati Sigma A (R-Free Set) 0.18
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3851
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 383

Software

Computing
Computing Package Purpose
MOSFLM Data Reduction (intensity integration)
CCP4 (SCALA) Data Reduction (data scaling)
SOLVE Structure Solution
CNS 1.1 Structure Refinement
Software
Software Name Purpose
CNS refinement
SNB/MLphare/CCP4/SOLVE model building
Mosflm/Scala/CCP4 data reduction
BLU-ICE data collection