X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 5
Details CRYSTALS WERE GROWN BY VAPOR DIFFUSION ON SITTING DROP BRIDGES. THE WELL MIX OF 20-24% PEG6000 BUFFERED WITH 100 MM NA ACETATE PH 5.0 WAS MIXED 1:1 WITH 3 UL OF I DOMAIN PROTEIN (20-30 MG/ML, 50 MM HEPES PH 7.0, 0.025% NA AZIDE). CRYSTALS WERE STABLIZED IN 100 MM NA ACETATE 5.0; 26% PEG6000 FOR DATA COLLECTION., vapor diffusion - sitting drop

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 49.32 α = 90
b = 124.05 β = 90
c = 76.38 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 287
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS -- 1994-08
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- SIEMENS -- -- --

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
2.7 10 68.0 -- 0.097 -- 5.6 -- 9011 -- 2.0 --
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)
2.7 2.94 39.8 -- 0.173 4.6 2.9 --

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
MIR 2.7 10.0 -- 2.0 -- 9011 -- 68.0 -- 0.174 0.174 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 12.49
RMS Deviations
Key Refinement Restraint Deviation
p_transverse_tor 19.6
p_staggered_tor 9.4
p_planar_tor 2.3
p_xyhbond_nbd 0.261
p_multtor_nbd 0.256
p_bond_d 0.018
p_angle_d 0.037
p_planar_d 0.032
p_mcbond_it 0.61
p_mcangle_it 1.074
p_scbond_it 0.837
p_scangle_it 1.458
p_plane_restr 0.012
p_chiral_restr 0.212
p_singtor_nbd 0.192
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3060
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 178

Software

Computing
Computing Package Purpose
XENGEN Data Reduction (intensity integration)
XENGEN Data Reduction (data scaling)
XTALVIEW Structure Solution
PROLSQ Structure Refinement
Software
Software Name Purpose
PROLSQ refinement
XTALVIEW model building