X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Reverse Salting
pH 8
Details THE PROTEIN WAS CRYSTALLIZED BY THE REVERSE SALTING IN METHOD FROM A DROP CONTAINING 12.5-25 MM TRIS-HCL, PH 8.0, 25-50 MM NACL, 2MM CACL2, reverse salting

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 89.14 α = 90
b = 89.14 β = 90
c = 75.77 γ = 120
Symmetry
Space Group H 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU -- 1995-10
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

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
2.8 25 99.9 0.107 0.107 -- 5.5 -- 5529 -- 0.0 27.0
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)
2.8 2.87 100.0 0.519 0.519 1.5 5.4 --

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
MOLECULAR REPLACEMENT 2.8 6.0 -- 2.5 -- 4748 507 95.5 -- 0.223 0.223 0.292 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 2.8 2.96 -- 74 643 0.298 0.355 0.041 87.2
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 25.4
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 24.0
x_angle_deg 1.6
x_bond_d 0.012
x_improper_angle_d 1.29
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.32
Luzzati Sigma A (Observed) 0.44
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.4
Luzzati Sigma A (R-Free Set) 0.5
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1212
Nucleic Acid Atoms 0
Heterogen Atoms 2
Solvent Atoms 36

Software

Software
Software Name Purpose
DENZO data reduction
CCP4 data reduction
AMoRE phasing
X-PLOR refinement version: 3.851
CCP4 data scaling