X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Details 10% PEG 6000, 10 MM POTASSIUM PHOSPHATE, 100 MM POTASSIUM CHLORIDE, 3 MM SODIUM DITHIONITE, 10 MG/ML DEOXYHB, PH 7.0, BATCH, TEMPERATURE 298K, 1 ATM N2. EXPOSING DEOXY CRYSTAL TO LIGAND: A DEOXY CRYSTAL WAS SOAKED (UNDER 1 ATM NITROGEN) IN SUBSTITUTE MOTHER LIQUOR CONTAINING 20% PEG 6000, 10 MM POTASSIUM PHOSPHATE (PH 7.0), 100 MM POTASSIUM CHLORIDE, AND 2.2 MM IHP. THE IHP-STABILIZED CRYSTAL WAS THEN EXPOSED TO 1 ATM OF OXYGEN AT 177K AND DATA WAS COLLECTED AT 169K.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 97.1 α = 90
b = 99.6 β = 90
c = 66.1 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 169
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IV OSMIC MIRRORS 2000-12-14
Diffraction Radiation
Monochromator Protocol
OSMIC MIRRORS SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200 1.5418 -- --

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
2.2 34.77 93.7 0.073 -- -- 3.1 -- 31525 -- 0.0 --
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)
2.2 2.37 87.7 0.266 -- 3.3 2.7 8798

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 2.2 10.0 -- 0.0 -- 26043 2971 88.36 -- 0.19424 0.18956 0.23589 10 SETS MATCHED TO PDB ENTRY 1RQ3
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 2.2 2.367 -- 493 4320 0.254 0.312 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 30.531
Anisotropic B[1][1] -0.41
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 1.4
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -0.99
RMS Deviations
Key Refinement Restraint Deviation
r_angle_refined_deg 1.255
r_bond_refined_d 0.013
r_symmetry_vdw_refined 0.113
r_symmetry_vdw_other 0.189
r_symmetry_hbond_refined 0.173
r_xyhbond_nbd_refined 0.183
r_mcbond_it 0.52
r_mcangle_it 0.99
r_gen_planes_other 0.004
r_nbd_other 0.197
r_nbd_refined 0.239
r_angle_other_deg 1.06
r_scangle_it 2.303
r_bond_other_d 0.001
r_chiral_restr 0.074
r_dihedral_angle_1_deg 3.099
r_dihedral_angle_3_deg 16.998
r_xyhbond_nbd_other 0.054
r_scbond_it 1.401
r_gen_planes_refined 0.005
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4384
Nucleic Acid Atoms 0
Heterogen Atoms 180
Solvent Atoms 143

Software

Software
Software Name Purpose
MOSFLM data reduction
SCALA data scaling
X-PLOR model building
REFMAC refinement version: 5.0
CCP4 data scaling version: (SCALA)
X-PLOR phasing