X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Details DATA SETS FROM FOUR CRYSTALS HAVE BEEN MERGED

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 75.5 α = 90
b = 75.5 β = 90
c = 556.2 γ = 120
Symmetry
Space Group P 65 2 2

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1995-07-25
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X12C 1.0, 1.5 NSLS X12C

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
3.2 37 85.0 0.089 -- -- 4.0 -- 14488 -- -- --

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
-- 3.2 10.0 -- 0.0 -- 13823 -- 85.0 -- 0.184 0.184 0.294 --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 35.0
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.4
x_bond_d 0.008
x_angle_deg 1.5
x_dihedral_angle_d 24.5
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.2
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4576
Nucleic Acid Atoms 0
Heterogen Atoms 14
Solvent Atoms 0

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
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
DENZO/SCALEPACK data collection