1D6G

MOLECULAR COMPLEX OF CHOLECYSTOKININ-8 AND N-TERMINUS OF THE CHOLECYSTOKININ A RECEPTOR BY NMR SPECTROSCOPY

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1.6mM CCK-A_R(1-47), 171 mM DPC-d38	90% H2O/10% D2O		6.5	ambient	285
2	2D NOESY	1.5mM CCK-8, 137mM DPC-d38	90% H2O/10% D2O		6.5	ambient	298
3	2D NOESY	1.6mM CCK-A-R(1-47) + 3mM CCK-8, 171 mM DPC-d38	100% D2O or 90% H2O, 10% D2O		6.5	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITY	500
2	Bruker	AVANCE DRX	600
3	Varian	UNITY	750

NMR Refinement
Method	Details	Software
distance geometry, simulated annealing, molecular dynamics	The structures of CCK-A-R(1-47) and CCK-8 were calculated separately. The complex was calculated using intra- and intermolecular NOEs using simulated annealing and molecular dynamics calculations. The calculations utilized explicit solvent, as a decane/water simulation cell.	GROMACS

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number	90
Conformers Submitted Total Number	1
Representative Model	(lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	GROMACS	1.6	van der Spoel, D.; van Buuren, A.R.; Apol, E.; Meulenhoff, P.J.; Tielman, D.P.; Sijbers, A.L.T.M.; van Drunen, R.; Berendsen, H.J.C.
2	structure solution	Distance Geometry	home written	Mierke, D.F.