X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.5
Details HANGING DROP VAPOR DIFFUSION. 10-15 MG/ML PROTEIN IN 50 MM TRIS-HCL, 0.5 M NACL, 10 MM MGCL2, 5MM GTP, 2 MM EDTA, 4 MM DTT, PH 7.5 WERE MIXED WITH AN EQUAL VOLUME OF AND EQUILIBRATED AGAINST 100 MM TRIS-HCL, 200 MM NACL, 200 MM AMMONIUM SULFATE 34% MEOPEG 5000, PH 7.5., vapor diffusion - hanging drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 93.33 α = 90
b = 214.93 β = 90
c = 105.75 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MAR scanner 300 mm plate -- 1996-07
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX7.2 -- SRS PX7.2

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
2.5 20 97.5 0.062 -- -- 3.0 -- 36196 -- 0.0 48.3

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 REPLACEMENT WITH A MERCURY DERIVATIVE OBTAINED BY SOAKING THE CRYSTAL FOR TWO HOURS IN 1 MM THIMEROSAL AND A SELENOMETHIONINE DERIVATIVE 2.5 10.0 -- 0.0 -- 35714 -- 97.5 -- 0.218 0.218 0.299 --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 29.1
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.99
x_bond_d 0.012
x_angle_deg 2.714
x_dihedral_angle_d 25.16
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5122
Nucleic Acid Atoms 0
Heterogen Atoms 64
Solvent Atoms 360

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
X-PLOR Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement
X-PLOR model building