8T0G

Backbone Dialkylation in Peptide Hairpins: Natural Backbone Prototype

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H TOCSY	2 mM GB1 C-terminal Hairpin Mutant: Ala13 variant, 50 mM sodium phosphate, 0.2 mM DSS	90% H2O/10% D2O	250 mM	6.3	1 atm	298	Bruker AVANCE 700
2	2D 1H-1H NOESY	2 mM GB1 C-terminal Hairpin Mutant: Ala13 variant, 50 mM sodium phosphate, 0.2 mM DSS	90% H2O/10% D2O	250 mM	6.3	1 atm	298	Bruker AVANCE 700
3	2D 1H-1H COSY	2 mM GB1 C-terminal Hairpin Mutant: Ala13 variant, 50 mM sodium phosphate, 0.2 mM DSS	90% H2O/10% D2O	250 mM	6.3	1 atm	298	Bruker AVANCE 700

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	700

NMR Refinement
Method	Details	Software
simulated annealing		ARIA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	TopSpin		Bruker Biospin
2	chemical shift assignment	NMRFAM-SPARKY		Lee W, Tonelli M, Markley JL
3	peak picking	NMRFAM-SPARKY		Lee W, Tonelli M, Markley JL
4	refinement	ARIA		Linge, O'Donoghue and Nilges
5	structure calculation	ARIA		Linge, O'Donoghue and Nilges