X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details 40% PEG400, 0.15M NACL, 0.1M HEPES 8.0, pH 7.5

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 145.72 α = 90
b = 145.72 β = 90
c = 145.72 γ = 90
Symmetry
Space Group I 2 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM-4 -- 2005-08-05
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X25 -- NSLS X25

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
2.73 50 99.8 0.05 -- -- 6.1 -- 13877 -- -3.0 --
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)
2.73 2.94 99.8 0.37 -- 4.3 4.9 --

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
MOLECULAR REPLACEMENT 2.73 24.99 -- -- -- 12783 987 99.6 -- 0.212 0.208 0.262 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 2.73 2.8 -- 74 952 0.358 0.474 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 56.8
RMS Deviations
Key Refinement Restraint Deviation
r_chiral_restr 0.116
r_nbd_refined 0.244
r_mcangle_it 2.094
r_dihedral_angle_1_deg 6.943
r_dihedral_angle_2_deg 41.052
r_dihedral_angle_4_deg 17.081
r_scbond_it 2.387
r_bond_refined_d 0.018
r_xyhbond_nbd_refined 0.211
r_dihedral_angle_3_deg 19.498
r_symmetry_vdw_refined 0.193
r_nbtor_refined 0.327
r_angle_refined_deg 1.809
r_scangle_it 3.994
r_gen_planes_refined 0.006
r_symmetry_hbond_refined 0.196
r_mcbond_it 1.141
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2413
Nucleic Acid Atoms 0
Heterogen Atoms 33
Solvent Atoms 74

Software

Software
Software Name Purpose
REFMAC refinement version: 5.2.0019
HKL-2000 data reduction
HKL-2000 data scaling
PHASER phasing