X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 6.5
Temperature 293.0
Details SITTING DROPS WERE PREPARED BY MIXING EQUAL VOLUMES OF PROTEIN WHICH WAS 14 MG/ ML IN 20MM HEPES, PH 7.5 AND TO WHICH AN EXCESS OF SOLID INHIBITOR HAD BEEN ADDED AND RESERVOIR SOLUTION (30% PEG 2000 MONOMETHYLETHER, 0.1M SODIUM ACETATE, PH 5.0 AND 0.2M AMMONIUM SULFATE). THIS MIXTURE WAS INCUBATED OVERNIGHT AT 4C AND CENTRIFUGED TO REMOVE PRECIPITATE BEFORE SETTING UP CRYSTALLIZATION DROPS. CO-CRYSTALS WERE GROWN FROM 6 ML SITTING DROPS OF THE PROTEIN-RESERVOIR SOLUTION AND 0.3 ML OF THE RESERVOIR SOLUTION AT EITHER ROOM TEMPERATURE OR 4C, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 49.3 α = 90
b = 51.2 β = 90
c = 203.3 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1998-11-11
IMAGE PLATE MARRESEARCH -- 1997-04-21
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X25 -- NSLS X25
ROTATING ANODE RIGAKU RU300 -- -- --

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 20 34187.0 0.103 -- -- 16.0 35656 545270 0.0 2.0 25.0
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)
2.0 2.07 97.6 0.314 -- -- 7.0 --

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
-- 2.0 20.0 0.0 0.0 35831 33702 3355 94.1 -- 0.198 0.198 0.259 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.018
c_angle_deg 2.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3388
Nucleic Acid Atoms 0
Heterogen Atoms 67
Solvent Atoms 340

Software

Computing
Computing Package Purpose
MAR Data Reduction (intensity integration)
HKL Data Reduction (data scaling)
AMORE Structure Solution
CNS Structure Refinement
Software
Software Name Purpose
CNS refinement
AMORE model building