2HF5

The structure and function of a novel two-site calcium-binding fragment of calmodulin

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	1H-15N-1H NOESY-HSQC	0.5mM CaM2/3 U-15N,13C; 20 mM Tris d11, 50 mM KCl, 10 mM CaCl2, 90% H2O, and 10% D2O	90% H2O/10% D2O	50 mM	7.4	ambient	298
2	simultaneous 1H-13C/15N-1H NOESY-HSQC	0.5mM CaM2/3 U-15N,13C; 20 mM Tris d11, 50 mM KCl, 10 mM CaCl2, 90% H2O, and 10% D2O	90% H2O/10% D2O	50 mM	7.4	ambient	298
3	aromatic 1H-13C-1H NOESY-HSQC	0.5mM CaM2/3 U-15N,13C; 20 mM Tris d11, 50 mM KCl, 10 mM CaCl2, 90% H2O, and 10% D2O	90% H2O/10% D2O	50 mM	7.4	ambient	298
4	methyl 1H-13C/15N-1H NOESY-HSQC	0.5mM CaM2/3 U-15N,13C; 20 mM Tris d11, 50 mM KCl, 10 mM CaCl2, 90% H2O, and 10% D2O	90% H2O/10% D2O	50 mM	7.4	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITY	500
2	Varian	INOVA	600

NMR Refinement
Method	Details	Software
Restrained molecular dynamics, simulated annealing		CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CNS	1.1	BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,READ,RICE,SIMONSON,WARREN
2	structure solution	ARIA	1.2	Linge, Habeck et al. 2003
3	processing	Felix	2000	Accelrys, Inc.
4	processing	NMRPipe	2006	Delaglio, Grzesiek et al. 1995
5	data analysis	Sparky	3.111	Goddard and Kneeler 1999
6	refinement	ARIA	1.2	Linge, Habeck et al. 2003
7	refinement	CNS	1.1	BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,READ,RICE,SIMONSON,WARREN