5TTT

Sparse-restraint solution NMR structure of micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4 refined by restrained Rosetta

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-13C; U-15N; U-2H] micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4	95% H2O/5% D2O	0.025 M	6.8	1 atm	300	Bruker AVANCE 800
2	3D HNCO	1.5 mM [U-13C; U-15N; U-2H] micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4	95% H2O/5% D2O	0.025 M	6.8	1 atm	300	Bruker AVANCE 800
3	3D HNCA	1.5 mM [U-13C; U-15N; U-2H] micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4	95% H2O/5% D2O	0.025 M	6.8	1 atm	300	Bruker AVANCE 800
4	3D HNCACO	1.5 mM [U-13C; U-15N; U-2H] micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4	95% H2O/5% D2O	0.025 M	6.8	1 atm	300	Bruker AVANCE 800
5	3D HN(CO)CA	1.5 mM [U-13C; U-15N; U-2H] micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4	95% H2O/5% D2O	0.025 M	6.8	1 atm	300	Bruker AVANCE 800
6	2D 1H-1H NOESY	1.5 mM [U-13C; U-15N; U-2H] micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4	95% H2O/5% D2O	0.025 M	6.8	1 atm	300	Bruker AVANCE 800
7	3D 1H-15N NOESY	1.5 mM [U-13C; U-15N; U-2H] micelle-solubilized cytosolic amino terminal domain of C. elegans mechanosensory ion channel MEC-4	95% H2O/5% D2O	0.025 M	6.8	1 atm	300	Bruker AVANCE 800

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

NMR Refinement
Method	Details	Software
simulated annealing		Restrained Rosetta

NMR Ensemble Information
Conformer Selection Criteria	target function
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	Restrained Rosetta		Mao, Baker, Montelione
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	AutoAssign	2.4.0	Zimmerman, Moseley, Kulikowski and Montelione
4	peak picking	Sparky		Goddard
5	structure solution	CNS		Brunger, Adams, Clore, Gros, Nilges and Read
6	structure solution	TALOS		Cornilescu, Delaglio and Bax

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.