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Solution structure of PI7, a non toxic peptide isolated from the scorpion Pandinus Imperator.
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
NOESY
H2O/D2O
3.5
1 atm
308
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
UNITY
500
NMR Refinement
Method
Details
Software
simulated annealing
THE STRUCTURE WAS CALCULATED USING THE PROGRAM DYANA. TWENTY FIVE BEST DYANA CONFORMERS WERE SUBMITTED TO RESTRAINED ENERGY MINIMIZATION IN A SHELL OF 584 WATER MOLECULES USING THE PROGRAM OPAL. COORDINATES FOR THE WATER ARE NOT CONTAINED IN THIS ENTRY. FOR FURTHER DETAILS ON THE REFINEMENT SEE THE JRNL CITATION ABOVE.
OPAL
NMR Ensemble Information
Conformer Selection Criteria
LEAST RESTRAINT VIOLATION, STRUCTURE QUALITY ACCORDING TO PROCHECK
Conformers Calculated Total Number
200
Conformers Submitted Total Number
14
Representative Model
1 (n/a)
Additional NMR Experimental Information
Details
THE STRUCTURE OF THE NATURAL TOXIN EXTRACTED FROM THE SCORPION VENOM WAS DETERMINED BY HOMONUCLEAR NMR AT 500 MHZ FROM NANOMOLE AMOUNT OF COMPOUND.