X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Macroseeding
pH 7
Details PROTEIN SEED CRYSTALS WERE OBTAINED FROM 60-70% AMMONIUM SULFATE, 10MM TRIS PH 7.0, 1-2% ACETONE. MACROSEEDS WERE TRANSFERRED TO THE ABOVE SOLUTION WITH NO ACETONE PRESENT., macroseeding

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 56.49 α = 90
b = 88.14 β = 90
c = 35.19 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH MIRROR 1992-04
Diffraction Radiation
Monochromator Protocol
SI(111) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON SRS BEAMLINE PX9.5 -- SRS PX9.5

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
1.8 20 89.2 0.062 0.062 -- 3.4 -- 12653 -- -3.0 18.5
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)
1.8 1.9 79.9 0.49 0.49 1.6 3.4 --

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 1.8 10.0 -- 0.0 61954 61954 -- 89.3 -- -- 0.175 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 24.5
RMS Deviations
Key Refinement Restraint Deviation
p_scangle_it 9.8
p_planar_tor 2.4
p_transverse_tor 24.8
p_scbond_it 6.7
p_mcangle_it 4.2
p_xyhbond_nbd 0.18
p_chiral_restr 0.16
p_planar_d 0.045
p_plane_restr 0.014
p_singtor_nbd 0.19
p_staggered_tor 17.7
p_bond_d 0.016
p_mcbond_it 3.1
p_angle_d 0.046
p_multtor_nbd 0.25
Coordinate Error
Parameter Value
Luzzati Sigma A (Observed) 0.19
Luzzati Resolution Cutoff (Low) 10.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1106
Nucleic Acid Atoms 0
Heterogen Atoms 31
Solvent Atoms 126

Software

Software
Software Name Purpose
MERLOT phasing
CCP4 refinement
DENZO data reduction
SCALEPACK data scaling