X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.5
Details PROTEIN WAS CRYSTALLIZED FROM 20% PEG 8000, 0.1 M TRIS PH 8.5, AND 0.2 M CALCIUM ACETATE.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 105.28 α = 90
b = 30.71 β = 94.57
c = 51.33 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRRORS 1996-11-10
Diffraction Radiation
Monochromator Protocol
SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X12B -- NSLS X12B

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
2.4 10 99.3 -- 0.09 -- 4.0 -- 6485 -- 0.0 20.0
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)
2.4 2.48 99.5 -- 0.251 5.92 4.0 --

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
MAD 2.4 6.0 -- 2.0 -- 6209 -- 84.0 -- 0.212 0.212 0.298 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 2.4 2.48 -- -- 408 0.261 0.31 0.045 70.6
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 15.0
RMS Deviations
Key Refinement Restraint Deviation
x_angle_deg 2.5
x_bond_d 0.014
Coordinate Error
Parameter Value
Luzzati Resolution Cutoff (Low) 6.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1395
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 58

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
MADSYS phasing
X-PLOR model building version: 3.85
X-PLOR refinement version: 3.85
X-PLOR phasing version: 3.85