1XKM

NMR structure of antimicrobial peptide distinctin in water

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	3.8mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	310
2	2D TOCSY	3.8mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	310
3	2D NOESY	3.8mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	300
4	2D TOCSY	3.8mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	300
5	2D NOESY	0.05mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	310
6	2D TOCSY	0.05mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	310
7	2D NOESY	0.05mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	300
8	2D TOCSY	0.05mM Natural Abundance Distinctin; NaN3	90% H2O/10% D2O	NULL	6.8	ambient	300
9	2D NOESY	3.8mM Natural Abundance Distinctin; NaN3	100% D2O	NULL	6.4	ambient	310
10	2D TOCSY	3.8mM Natural Abundance Distinctin; NaN3	100% D2O	NULL	6.4	ambient	310

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500

NMR Refinement
Method	Details	Software
simulated annealing with cartesian coordinate dynamics	the structures are based on a total of 636 restraints, 548 are NOE-derived distance constraints, 88 distance restraints from hydrogen bonds.	Amber

NMR Ensemble Information
Conformer Selection Criteria	Structures within a prefixed threshold of amber energy, solvent accessible surface area and symmetry-based penalty functions (see jrnl)
Conformers Calculated Total Number	150
Conformers Submitted Total Number	24
Representative Model	20 (structure within a prefixed threshold of amber energy, solvent accessible surface area and symmetry-based penalty functions)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	Amber	5	Kollman, Case
2	refinement	Amber	5	Kollman, Case
3	data analysis	MOLMOL	2K.2	Koradi
4	processing	XwinNMR	2.0	Bruker