5I2V

NMR structure of a new G-quadruplex forming sequence within the KRAS proto-oncogene promoter region

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 800
8	2D 1H-1H NOESY	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 700
2	2D 1H-1H COSY	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 800
3	2D 1H-13C HSQC	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 800
4	2D 1H-1H TOCSY	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 800
5	2D 1H-15N HSQC	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 800
6	2D 1H-13C HMBC	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 700
7	1D 1H-15N HSQC	2 mM KRAS 22RT, 2 mM dG (5% 15N) KRAS 22RT 15N	90% H2O/10% D2O	90 mM	6.6	1 atm	293	Bruker AVANCE III 700

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III	700
2	Bruker	AVANCE III	800

NMR Refinement
Method	Details	Software
simulated annealing

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	11
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	Sparky		Goddard
2	collection	TopSpin		Bruker Biospin
3	data analysis	CcpNmr Analysis		CCPN
4	structure calculation	ARIA		Linge, O'Donoghue and Nilges
5	structure calculation	CNS		Brunger, Adams, Clore, Gros, Nilges and Read
6	refinement	Amber		Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman