X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8.5
Details PROTEIN CRYSTALLIZED BY HANGING-DROP VAPOUR DIFFUSION METHOD FROM DROPS CONTAINING EQUAL VOLUMES OF PROTEIN(10-15MG/ML) IN CRYSTALLIZATION BUFFER CONTAINING 1MM LACTOSE OR 30 MM N-ACETYLLACTOSAMINE AND THE WELL SOLUTION COMPOSED OF 27-30% PEG 4000-6000, 100MM TRIS-HCL PH 8.5, 100 MM MGCL2, AND 8 MM 2-MERCAPTOETHANOL., vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 37.6 α = 90
b = 58.4 β = 90
c = 64 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 287
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS -- 1994-12
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE 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
1.9 25 99.0 0.052 -- -- -- -- 7955 -- -- --

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
MULTIPLE ISOMORPHOUS METHOD 2.1 5.0 -- 2.0 -- -- -- 99.0 -- 0.17 0.17 0.24 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 2.1 3.13 -- -- 204 0.206 -- -- 77.0
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 20.6
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.01
x_angle_deg 1.7
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1101
Nucleic Acid Atoms 0
Heterogen Atoms 26
Solvent Atoms 120

Software

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