X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Details PEPTIDE WAS CRYSTALLIZED FROM 4.0 MG/ML PEPTIDE IN 10% ACETIC ACID, 0.1% SODIUM AZIDE, AND 3.0% PEG400.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 26.82 α = 90
b = 26.29 β = 90
c = 20.18 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 259
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR ENRAF-NONIUS FAST -- 1991-10
Diffraction Radiation
Monochromator Protocol
-- --
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
1.97 -- 99.5 -- -- -- -- -- 1136 -- 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)
1.97 2.2 98.0 -- -- -- -- --

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
MOLECULAR REPLACEMENT 1.97 8.0 -- 2.0 -- 861 -- 76.7 -- 0.181 0.181 -- --
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 1.97 2.04 -- -- 69 0.22 -- -- 63.3
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model GROUP
Mean Isotropic B 15.9
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 2.11
x_bond_d 0.01
x_angle_deg 2.07
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 126
Nucleic Acid Atoms 0
Heterogen Atoms 8
Solvent Atoms 37

Software

Computing
Computing Package Purpose
MOLEN Data Reduction (intensity integration)
X-PLOR 3.1 Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
LALS refinement
X-PLOR version: 3.1 model building