1IH0

Structure of the C-domain of Human Cardiac Troponin C in Complex with Ca2+ Sensitizer EMD 57033

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	HNHA	~1mM C-domain of Cardiac Troponin C. 100mM KCl 10mM Imidazole 1mM DSS ~1mM EMD 57033 trace DMSO-d6	90% H2O/10% D2O	0.1	6.7	ambient	303
2	HNHB	~1mM C-domain of Cardiac Troponin C. 100mM KCl 10mM Imidazole 1mM DSS ~1mM EMD 57033 trace DMSO-d6	90% H2O/10% D2O	0.1	6.7	ambient	303
3	3D-13C/15N-NOESY	~1mM C-domain of Cardiac Troponin C. 100mM KCl 10mM Imidazole 1mM DSS ~1mM EMD 57033 trace DMSO-d6	90% H2O/10% D2O	0.1	6.7	ambient	303
4	HCCHTOCSY	~1mM C-domain of Cardiac Troponin C. 100mM KCl 10mM Imidazole 1mM DSS ~1mM EMD 57033 trace DMSO-d6	90% H2O/10% D2O	0.1	6.7	ambient	303
5	3D_15N-separated_NOESY	~1mM C-domain of Cardiac Troponin C. 100mM KCl 10mM Imidazole 1mM DSS ~1mM EMD 57033 trace DMSO-d6	90% H2O/10% D2O	0.1	6.7	ambient	303
6	HNCACB	~1mM C-domain of Cardiac Troponin C. 100mM KCl 10mM Imidazole 1mM DSS ~1mM EMD 57033 trace DMSO-d6	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	~1000 NOE restraints were used. 61 dihedral restraints as well as 14 NOE restraints between drug and protein.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	30
Conformers Submitted Total Number	30
Representative Model	11 (closest to the minimized average structure)

Additional NMR Experimental Information
Details	The structure of the protein was determined using multidimensional NMR spectroscopy. The structure of EMD 57033 in the complex was determined using 15N/13C-filtered-NOESY and DIPSI experiments. The contacts between protein and EMD 57033 were determined using 15N/13C-filtered/edited experiments.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.851	Brunger, A.

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.