X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6
Details CRYSTALLIZED FROM 1.01M NA MALATE, PH 6.0 2 MM NITROMETHYLDETHIA COENZYME A THE CELL ANGLE BETA IS DEFINED AS THE ACUTE ANGLE FOR CONSISTENCY WITH PREVIOUS PDB ENTRIES OF CITRATE SYNTHASE IN THIS SPACE GROUP

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 104.13 α = 90
b = 78.5 β = 78.93
c = 58.42 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 295
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR XUONG-HAMLIN MULTIWIRE COLLIMATOR 1997-03-12
Diffraction Radiation
Monochromator Protocol
GRAPHITE(002) --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH2R -- -- --

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
1.8 25 85.0 0.059 -- -- 2.0 -- 36528 -- 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)
1.8 1.94 75.0 0.173 -- 2.1 1.3 --

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 SUBSTITUTION 1.8 25.0 -- 0.0 36675 36675 -- 85.0 -- -- 0.154 -- --
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model TNT BCORREL V1.0
RMS Deviations
Key Refinement Restraint Deviation
t_nbd 0.016
t_it 4.7
t_gen_planes 0.016
t_trig_c_planes 0.018
t_incorr_chiral_ct 0.0
t_dihedral_angle_d 16.1
t_angle_deg 2.1
t_bond_d 0.014
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3391
Nucleic Acid Atoms 0
Heterogen Atoms 60
Solvent Atoms 141

Software

Computing
Computing Package Purpose
SDMS (DCREDUCE) Data Reduction (intensity integration)
SDMS (SCALE) Data Reduction (data scaling)
TNT Structure Solution
TNT V. 5-F Structure Refinement
Software
Software Name Purpose
TNT version: 5F refinement
TNT model building