2DD6

Solution structure of Dermaseptin antimicrobial peptide truncated, mutated analog, K4-S4(1-13)a

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	DQF-COSY	Peptide concentration 2.2mM natural abundance; 20:1 molar ratio of DPC-d38 to peptide; 10% phosphate buffer; 10% D2O; 0.02% NaN3	10% phosphate buffer; 10% D2O; 0.02% NaN3 in triple distilled water	78 mM	7.4	ambient	303
2	2D TOCSY	Peptide concentration 2.2mM natural abundance; 20:1 molar ratio of DPC-d38 to peptide; 10% phosphate buffer; 10% D2O; 0.02% NaN3	10% phosphate buffer; 10% D2O; 0.02% NaN3 in triple distilled water	78 mM	7.4	ambient	303
3	2D NOESY	Peptide concentration 2.2mM natural abundance; 20:1 molar ratio of DPC-d38 to peptide; 10% phosphate buffer; 10% D2O; 0.02% NaN3	10% phosphate buffer; 10% D2O; 0.02% NaN3 in triple distilled water	78 mM	7.4	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	600

NMR Refinement
Method	Details	Software
Distance geometry, simulated annealing	The structures are based on 250 restraints comprising: 83 intraresidual; 78 i,i+1; 34 i,i+2; 37 i,i+3; 18 long range	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy, structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	15
Representative Model	1 (lowest energy)

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.1	Bruker
2	processing	XwinNMR	3.1	Bruker
3	data analysis	Sparky	3	Goddard and Kneller, UCSF
4	structure solution	X-PLOR	3.856	Nilges, Kuszewski, Brnger
5	data analysis	Procheck		Laskowski, Rullmannn, MacArthur, Kaptein, Thornton
6	refinement	X-PLOR	3.856	Nilges, Kuszewski, Brnger