8BV6

An i-motif domain able to undergo pH-dependent conformational transitions (neutral structure)

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	500 uM DNA (5'-D(*CP*(DNR)P*GP*TP*TP*CP*(DNR)P*GP*TP*TP*TP*TP*TP*CP*CP*GP*TP*TP*CP*CP*GP*T)-3'), 10 mM sodium phosphate, 0.5 v/v DSS	90% H2O/10% D2O	10 mM	7	1 atm	278	Bruker AVANCE 600
2	2D 1H-1H TOCSY	500 uM DNA (5'-D(*CP*(DNR)P*GP*TP*TP*CP*(DNR)P*GP*TP*TP*TP*TP*TP*CP*CP*GP*TP*TP*CP*CP*GP*T)-3'), 10 mM sodium phosphate, 0.5 v/v DSS	90% H2O/10% D2O	10 mM	7	1 atm	278	Bruker AVANCE 600
3	2D 1H-1H TOCSY	500 uM DNA (5'-D(*CP*(DNR)P*GP*TP*TP*CP*(DNR)P*GP*TP*TP*TP*TP*TP*CP*CP*GP*TP*TP*CP*CP*GP*T)-3'), 10 mM sodium phosphate, 0.5 v/v DSS	100% D2O	10 mM	7	1 atm	278	Bruker AVANCE 600
4	2D 1H-1H NOESY	500 uM DNA (5'-D(*CP*(DNR)P*GP*TP*TP*CP*(DNR)P*GP*TP*TP*TP*TP*TP*CP*CP*GP*TP*TP*CP*CP*GP*T)-3'), 10 mM sodium phosphate, 0.5 v/v DSS	90% H2O/10% D2O	10 mM	7	1 atm	278	Bruker AVANCE 600
5	2D 1H-1H NOESY	500 uM DNA (5'-D(*CP*(DNR)P*GP*TP*TP*CP*(DNR)P*GP*TP*TP*TP*TP*TP*CP*CP*GP*TP*TP*CP*CP*GP*T)-3'), 10 mM sodium phosphate, 0.5 v/v DSS	90% H2O/10% D2O	10 mM	7	1 atm	278	Bruker AVANCE 600
6	2D 1H-1H NOESY	500 uM DNA (5'-D(*CP*(DNR)P*GP*TP*TP*CP*(DNR)P*GP*TP*TP*TP*TP*TP*CP*CP*GP*TP*TP*CP*CP*GP*T)-3'), 10 mM sodium phosphate, 0.5 v/v DSS	100% D2O	10 mM	7	1 atm	278	Bruker AVANCE 600
7	2D 1H-1H COSY	500 uM DNA (5'-D(*CP*(DNR)P*GP*TP*TP*CP*(DNR)P*GP*TP*TP*TP*TP*TP*CP*CP*GP*TP*TP*CP*CP*GP*T)-3'), 10 mM sodium phosphate, 0.5 v/v DSS	100% D2O	10 mM	7	1 atm	278	Bruker AVANCE 600

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
molecular dynamics		Amber

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	15
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin		Bruker Biospin
2	processing	TopSpin		Bruker Biospin
3	chemical shift assignment	Sparky		Goddard
4	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
5	refinement	Amber		Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman
6	data analysis	3DNA		Lu and Olson
7	data analysis	MOLMOL		Koradi, Billeter and Wuthrich