X-RAY DIFFRACTION Experimental Data & Validation

X-ray Experimental Help


Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 7
Temperature 293.0
Details Crystal was soaked for 20 minutes in mother liquor containing 5mM Tazobactam prior to flash freezing. 30% PEG 6000, 0.1M HEPES, 0.56mM Cymal-6, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 49.85 α = 90
b = 55.19 β = 90
c = 83.73 γ = 90
Space Group P 21 21 21


Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS IV Yale mirrors 2003-06-01
Diffraction Radiation
Monochromator Protocol
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

Data Collection

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
1.63 30 95.6 -- 0.032 -- 4.3 29632 28328 0.0 1.0 11.8
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)
1.63 1.69 87.7 -- 0.08 -- -- --


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 1.63 30.0 1.0 0.0 29531 28279 1372 95.8 -- -- 0.147 0.171 random
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model Overall anisotropic
Anisotropic B[1][1] -0.44
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 1.643
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -1.203
RMS Deviations
Key Refinement Restraint Deviation
c_angle_d 1.578
c_bond_d 0.0088
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.134
Luzzati Sigma A (Observed) 0.039
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.161
Luzzati Sigma A (R-Free Set) 0.07
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2020
Nucleic Acid Atoms 0
Heterogen Atoms 64
Solvent Atoms 300


Computing Package Purpose
R-AXIS Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CNS Structure Solution
CNS Structure Refinement
Software Name Purpose
CNS refinement
CNS model building
SCALEPACK data reduction
R-AXIS data collection