X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.24
Details CITRIC ACID, LITHIUM CHLORIDE, pH 4.24

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 50.37 α = 90
b = 50.37 β = 90
c = 66.63 γ = 120
Symmetry
Space Group P 31 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 115
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IV MIRRORS 2001-06-29
Diffraction Radiation
Monochromator Protocol
NI FILTER SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU R300 -- -- --

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
1.9 26.48 99.8 0.059 -- -- 5.4 -- 8091 -- -3.0 18.73
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)
1.9 1.97 99.7 0.194 -- 8.4 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 1.9 26.48 -- -- -- 7693 372 99.8 -- 0.172 0.171 0.186 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 1.9 1.95 -- 22 563 0.203 0.256 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 15.73
Anisotropic B[1][1] 0.78
Anisotropic B[1][2] 0.39
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.78
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -1.17
RMS Deviations
Key Refinement Restraint Deviation
r_scangle_it 4.545
r_scbond_it 2.62
r_mcangle_it 2.041
r_mcbond_it 1.117
r_nbd_refined 0.232
r_gen_planes_other 0.003
r_gen_planes_refined 0.006
r_chiral_restr 0.077
r_dihedral_angle_3_deg 14.459
r_dihedral_angle_1_deg 3.87
r_angle_other_deg 0.708
r_angle_refined_deg 1.609
r_bond_other_d 0.001
r_bond_refined_d 0.014
r_nbd_other 0.206
r_xyhbond_nbd_refined 0.155
r_xyhbond_nbd_other 0.057
r_symmetry_vdw_refined 0.284
r_symmetry_vdw_other 0.25
r_symmetry_hbond_refined 0.173
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 682
Nucleic Acid Atoms 0
Heterogen Atoms 4
Solvent Atoms 106

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
MOLREP Structure Solution
REFMAC 5.0 Structure Refinement
Software
Software Name Purpose
REFMAC version: 5.0 refinement
MOLREP model building