X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.6
Details BATCH METHOD. 20 MG/ML PROTEIN SOLUTION IN 50MM SODIUM ACETATE PH 4.6 AND 10% NACL. CRYSTALS GROWN AT ROOM TEMPERATURE.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 78.81 α = 90
b = 78.81 β = 90
c = 36.8 γ = 90
Symmetry
Space Group P 43 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 120
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH SEGMENTED MIRROR 1994-12-01
Diffraction Radiation
Monochromator Protocol
SILICON CRYSTAL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X9B -- NSLS X9B

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
0.92 25 90.1 0.028 0.028 -- 2.0 -- 58373 -- 3.0 17.7
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)
0.93 0.94 78.0 0.17 0.17 4.9 2.0 --

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
MOLECULAR REPLACEMENT 1.53 25.0 -- 0.0 -- 17923 915 100.0 -- 0.22 0.22 0.31 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 19.6
Anisotropic B[1][1] 1.043
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 1.043
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -1.96
RMS Deviations
Key Refinement Restraint Deviation
p_mcangle_it 2.9
p_scangle_it 5.1
p_planar_tor 5.7
p_angle_d 0.044
p_bond_d 0.026
p_scbond_it 4.3
p_plane_restr 0.016
p_mcbond_it 2.2
p_transverse_tor 20.1
p_singtor_nbd 0.168
p_chiral_restr 0.18
p_xyhbond_nbd 0.21
p_planar_d 0.044
p_multtor_nbd 0.294
p_staggered_tor 14.9
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1001
Nucleic Acid Atoms 0
Heterogen Atoms 9
Solvent Atoms 224

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
CCP4 model building
REFMAC refinement
CCP4 phasing