X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7
Details CRYSTALLIZED BY BATCH METHODS FROM A SATURATED SOLUTION OF GRAMICIDIN D IN ETHANOL., PH 7.0, BATCH METHOD

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 31.59 α = 90
b = 32.37 β = 90
c = 24.22 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 120
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS COLLIMATOR 1987-01
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SEALED TUBE CONVENTIONAL CU -- -- --

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
0.86 100 99.9 0.043 0.043 -- 1.1 -- 21454 -- -3.0 --
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)
0.86 0.9 93.6 0.043 0.043 1.2 1.1 --

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
DIRECT METHODS, FOURIER RECYCLING 0.86 100.0 -- 0.0 21454 -- 1033 99.2 0.162 0.162 -- 0.185 5% OF REFLECTIONS IN THIN RESOLUTION SHELLS.
RMS Deviations
Key Refinement Restraint Deviation
s_approx_iso_adps 0.036
s_similar_adp_cmpnt 0.03
s_rigid_bond_adp_cmpnt 0.005
s_non_zero_chiral_vol 0.113
s_zero_chiral_vol 0.114
s_from_restr_planes 0.339
s_angle_d 0.032
s_bond_d 0.016
Coordinate Error
Parameter Value
Number Disordered Residues 5.0
Occupancy Sum Hydrogen 365.06
Occupancy Sum Non Hydrogen 312.16
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 294
Nucleic Acid Atoms 0
Heterogen Atoms 42
Solvent Atoms 1

Software

Computing
Computing Package Purpose
SIEMENS Data Reduction (intensity integration)
SIEMENS Data Reduction (data scaling)
SHELXL-97 Structure Solution
SHELXL-97 Structure Refinement
Software
Software Name Purpose
SHELXL-97 refinement
SHELXL-97 model building