Experiment: 2K2B

Sparse-constraint solution NMR structure of micelle-solublized cytosolic amino terminal domain of C. elegans mechanosensory ion channel subunit MEC-4. New York Consortium on Membrane Protein Structure (NYCOMPS)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1.5 mM [U-100% 13C; U-100% 15N; 100% 2H; ILV methyl 1H; FY ring 1H] MEC4, 25 mM sodium phosphate, 5 mM Zwittergent 3-12, 25 mM sodium chloride, 5 mM TCEP	95% H2O/5% D2O	0.025	6.8	ambient	300
2	3D HNCO	1.5 mM [U-100% 13C; U-100% 15N; 100% 2H; ILV methyl 1H; FY ring 1H] MEC4, 25 mM sodium phosphate, 5 mM Zwittergent 3-12, 25 mM sodium chloride, 5 mM TCEP	95% H2O/5% D2O	0.025	6.8	ambient	300
3	3D HNCA	1.5 mM [U-100% 13C; U-100% 15N; 100% 2H; ILV methyl 1H; FY ring 1H] MEC4, 25 mM sodium phosphate, 5 mM Zwittergent 3-12, 25 mM sodium chloride, 5 mM TCEP	95% H2O/5% D2O	0.025	6.8	ambient	300
4	3D HN(CO)CA	1.5 mM [U-100% 13C; U-100% 15N; 100% 2H; ILV methyl 1H; FY ring 1H] MEC4, 25 mM sodium phosphate, 5 mM Zwittergent 3-12, 25 mM sodium chloride, 5 mM TCEP	95% H2O/5% D2O	0.025	6.8	ambient	300
5	3D HCACO	1.5 mM [U-100% 13C; U-100% 15N; 100% 2H; ILV methyl 1H; FY ring 1H] MEC4, 25 mM sodium phosphate, 5 mM Zwittergent 3-12, 25 mM sodium chloride, 5 mM TCEP	95% H2O/5% D2O	0.025	6.8	ambient	300
6	2D 1H-1H NOESY	1.5 mM [U-100% 13C; U-100% 15N; 100% 2H; ILV methyl 1H; FY ring 1H] MEC4, 25 mM sodium phosphate, 5 mM Zwittergent 3-12, 25 mM sodium chloride, 5 mM TCEP	95% H2O/5% D2O	0.025	6.8	ambient	300
7	3D 1H-15N NOESY	1.5 mM [U-100% 13C; U-100% 15N; 100% 2H; ILV methyl 1H; FY ring 1H] MEC4, 25 mM sodium phosphate, 5 mM Zwittergent 3-12, 25 mM sodium chloride, 5 mM TCEP	95% H2O/5% D2O	0.025	6.8	ambient	300

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
simulated annealing	explicit water refinement	CYANA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	250
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CYANA	1.0.6	Guntert, Mumenthaler and Wuthrich
2	processing	AutoAssign	2.4.0	Zimmerman, Moseley, Kulikowski and Montelione
3	structure solution	CNS	1.2	Brunger, Adams, Clore, Gros, Nilges and Read
4	data analysis	Sparky	3.110	Goddard