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NMR SOLUTION STRUCTURES OF AN ANTIFUNGAL AND ANTIBACTERIAL MUTANT OF HELIOMICIN
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D 1H DQF-COSY; TQF-COSY; TOCSY; NOESY
4 mM heliomicin-LL ; 40mM sodium acetate buffer
90% H2O/10% D2O
40mM sodium acetate buffer
4.3
ambient
293
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
AMX
500
NMR Refinement
Method
Details
Software
torsion angle dynamics (DYANA)
and energy minimisation (XPLOR)
the structures are based on a total of 120 intra-residue, 172 sequential, 108 medium range, 190 long range NOE-derived
distance restraints, 9 distances restraints corresponding to the 3 disulfide bridge, 100 dihedral angle restraints, and 13 distance restraints
for hydrogen bonds
UXNMR
NMR Ensemble Information
Conformer Selection Criteria
structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy, target function
Conformers Calculated Total Number
40
Conformers Submitted Total Number
18
Representative Model
1 (lowest target function)
Additional NMR Experimental Information
Details
This structure was determined using standard 2D homonuclear techniques.