2K10

Confirmational analysis of the broad-spectrum antibacterial peptide, rantuerin-2csa: identification of a full length helix-turn-helix motif

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H TOCSY	1.5-2.0 mM Peptide	1:1 mixture of TFE-d3 and H2O		3.2	ambient	298
2	2D 1H-1H NOESY	1.5-2.0 mM Peptide	1:1 mixture of TFE-d3 and H2O		3.2	ambient	298
3	2D DQF-COSY	1.5-2.0 mM Peptide	1:1 mixture of TFE-d3 and H2O		3.2	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500
2	Bruker	DRX	800

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing, Conjugated gradient minimization, Powell minimization		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (fewest violations)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.5	Bruker Biospin
2	processing	CYANA	2.0	Guntert, Mumenthaler and Wuthrich
3	refinement	SYBYL	6.8.1	Tripos

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.