6CUC

Solution structure of double knot toxin (DkTx)

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	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
2	3D HNCO	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
3	3D CBCA(CO)NH	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
4	3D HNCACB	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
5	3D HBHA(CO)NH	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
6	3D HCCH-TOCSY	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
7	3D 1H-13C NOESY aliphatic	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
8	3D 1H-13C NOESY aromatic	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900
9	3D 1H-15N NOESY	300 uM [U-13C; U-15N] DkTx, 20 mM sodium phosphate, 10 uM DSS, 0.02 % w/v sodium azide	95% H2O/5% D2O	0	5.8	ambient	298	Bruker AVANCE III 900

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III	900

NMR Refinement
Method	Details	Software
simulated annealing		CYANA

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	20
Conformers Submitted Total Number	20
Representative Model	1 (medoid)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CYANA		Guntert P.
2	data analysis	CcpNMR		CCPN
3	processing	RNMRTK		Hoch and Stern