1LXF

Structure of the Regulatory N-domain of Human Cardiac Troponin C in Complex with Human Cardiac Troponin-I(147-163) and Bepridil

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
2	3D_15N-separated_DIPSI	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
3	HCCH-TOCSY	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
4	3D_13C,15N-separated-NOESY	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
5	CBCACONNH	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
6	HNCACB	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
7	2D_13C, 15N-filtered NOESY	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
8	2D_13C, 15N-filtered DIPSI	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303
9	3D_13C, 15N-filtered, edited NOESY	1mM cNTnC, 3mM cTnI147-163, 1.5mM bepridil, 5mM DTT, 100mM KCl, 10mM IMDZ, trace amount of NaN3, 50uM DSS, 90% H2O, 10% D2O	90% H2O/10% D2O	0.1	6.7	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	Unity Inova	500
2	Varian	UNITY	600
3	Varian	UNITYPLUS	800

NMR Refinement
Method	Details	Software
simulated annealing	A total of 1169 NOE restraints, 88 dihedral angle restraints used for the refinement of cNTnC, 30 NOE restraints used between cNTnC and cTnI147-163, 28 NOE restraints used between cNTnC and bepridil, 24 intramolecular NOE restraints and 12 dihedral angle restraints used within cTnI147-163.	NMRPipe

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	30
Conformers Submitted Total Number	30
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe	2.1	Delaglio, Frank
2	data analysis	NMRView	5.0.4	Johnson, Bruce
3	refinement	X-PLOR	3.85	Brunger

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.