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SOLUTION STRUCTURE OF THE C-TERMINAL SH2 DOMAIN OF THE P85ALPHA REGULATORY SUBUNIT OF PHOSPHOINOSITIDE 3-KINASE, NMR, 30 STRUCTURES
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
VARIOUS
50 mM
7.5
1 atm
290
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
UNITYPLUS
600
NMR Refinement
Method
Details
Software
simulated annealing
30 CONFORMERS WERE DETERMINED BY RESTRAINED MOLECULAR DYNAMICS/SIMULATED ANNEALING METHOD USING THE PROGRAM X-PLOR 3.84. THE STRUCTURES ARE BASED ON 1908 INTERPROTON DISTANCE RESTRAINTS DERIVED FROM NOE MEASUREMENTS; 88 HYDROGEN-BONDING DISTANCE RESTRAINTS FOR 44 HYDROGEN-BONDS IDENTIFIED ON THE BASIS OF THE NOE AND AMIDE PROTON EXCHANGE DATA; 25 TORSION ANGLE RESTRAINTS DERIVED FROM COUPLING CONSTANTS AND NOE DATA. THE RMS DISTRIBUTION ABOUT THE MEAN COORDINATE POSITIONS IS 0.57 ANGSTROMS FOR ALL BACKBONE ATOMS AND 1.12 ANGSTROMS FOR ALL ATOMS. THE AVERAGE STRUCTURE WAS THEN CALCULATED BY BEST FIT SUPERPOSITION, COORDINATE AVERAGING AND RESTRAINED ENERGY MINIMIZATION.
X-PLOR
NMR Ensemble Information
Conformer Selection Criteria
NO NOE VIOLATION > 0.3A, NO DIHEDRAL VIOLATION > 3.0