1L3H

NMR structure of P41icf, a potent inhibitor of human cathepsin L

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	DQF-COSY	1mM P41icf; 20mM phosphate buffer, 0.01mM NaN3	85% H20, 15% D2O		5.7	ambient	288
2	2D TOCSY	1mM P41icf; 20mM phosphate buffer, 0.01mM NaN3	85% H20, 15% D2O		5.7	ambient	288
3	2D NOESY	1mM P41icf; 20mM phosphate buffer, 0.01mM NaN3	85% H20, 15% D2O		5.7	ambient	288

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	800
2	Bruker	DRX	600

NMR Refinement
Method	Details	Software
torsion angle dynamics and simulated annealing with restrained molecular dynamics	the structures are based on a total of 981 restraints, 925 are NOE-derived distance constraints, 56 dihedral angle restraints	NMRPipe

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy,target function
Conformers Calculated Total Number	600
Conformers Submitted Total Number	30
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe		Delaglio
2	data analysis	NMRView		Johnson
3	structure solution	DYANA	1.5	Guntert
4	refinement	Amber	5.0	Case