6NK9

Solution structure of AcaTx1, a potassium channel inhibitor from the sea anemone Antopleura cascaia

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	150 uM [U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
2	2D 1H-13C HSQC	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
8	2D 1H-13C HSQC	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker AVANCE III 800
9	3D HNCO	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
3	3D HN(CA)CO	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
4	3D HNCACB	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
7	3D HNCACB	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7	1 atm	278	Bruker DRX 600
5	3D CBCA(CO)NH	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
6	3D HBHA(CO)NH	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
10	3D HBCBCGCDHD	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
11	3D HBCBCGCDCEHE	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker DRX 600
14	3D 1H-15N NOESY	150 uM [U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker AVANCE III 800
13	3D 1H-13C NOESY aliphatic	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker AVANCE III 800
12	3D 1H-13C NOESY aromatic	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker AVANCE III 800
15	3D HCCH-TOCSY	150 uM [U-99% 13C; U-99% 15N] AcaTx1, 20 mM sodium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.0	1 atm	298	Bruker AVANCE III 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	AVANCE III	800

NMR Refinement
Method	Details	Software
molecular dynamics		ARIA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin		Bruker Biospin
2	data analysis	Analysis		Vranken et al., 2005
3	chemical shift assignment	Analysis		Vranken et al., 2005
4	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
5	structure calculation	ARIA		Linge, O'Donoghue and Nilges
6	refinement	ARIA		Linge, O'Donoghue and Nilges