X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Details 25 MG/ML GRAMICIDIN IN 53 MM CSCL IN METHANOL AT 10C FOR 3 MONTHS, BATCH METHOD, TEMPERATURE 283K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 32.12 α = 90
b = 52.1 β = 90
c = 31.17 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 290
Diffraction Detector
Detector Diffraction Type Details Collection Date
DIFFRACTOMETER PICKER FACS-1 -- 1983-05
Diffraction Radiation
Monochromator Protocol
NI FILTER SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --

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 99.8 -- -- -- 2.0 -- 3813 -- 0.0 --
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 2.5 99.2 -- -- -- 2.0 --

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
SINGLE WAVELENGTH ANOMALOUS SCATTERING FROM CESIUM 2.0 5.0 -- 1.0 -- 3017 -- -- -- 0.232 0.232 -- --
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 5.14
x_improper_angle_d 6.27
x_dihedral_angle_d 31.57
x_bond_d 0.042
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 544
Nucleic Acid Atoms 0
Heterogen Atoms 40
Solvent Atoms 20

Software

Computing
Computing Package Purpose
HANSON ET AL, 1979 Data Reduction (intensity integration)
ANOSCL, SCALE2, SCALE3 Data Reduction (data scaling)
PHASIT, ASCALC Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
ASCALC model building
X-PLOR refinement
PHASIT model building