1ZFI

Solution structure of the leech carboxypeptidase inhibitor

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1mM 15N-labeled leech carboxypeptidase inhibitor; 90% H2O, 10% D2O	90% H2O/10% D2O	20mM phosphate buffer	3.5	ambient	300
2	2D TOCSY	1mM 15N-labeled leech carboxypeptidase inhibitor; 90% H2O, 10% D2O	90% H2O/10% D2O	20mM phosphate buffer	3.5	ambient	300
3	3D_15N-separated_NOESY	1mM 15N-labeled leech carboxypeptidase inhibitor; 90% H2O, 10% D2O	90% H2O/10% D2O	20mM phosphate buffer	3.5	ambient	300
4	1H-15N HSQC	1mM 15N-labeled leech carboxypeptidase inhibitor; 90% H2O, 10% D2O	90% H2O/10% D2O	20mM phosphate buffer	3.5	ambient	300
5	1H-15N HSQC	1mM 15N-labeled leech carboxypeptidase inhibitor; 100% D2O	100% D2O	20mM phosphate buffer	3.5	ambient	300

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

NMR Refinement
Method	Details	Software
simulated annealing		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	40
Conformers Submitted Total Number	20
Representative Model	18 (closest to the average)

Additional NMR Experimental Information
Details	amide proton exchange experiments were carried out

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR		Bruker software
2	processing	Sparky	SPARKY 3	Bruker software
3	data analysis	Sparky	SPARKY 3	Goddard and Kneller
4	structure solution	CNS		Brunger
5	refinement	CNS		Brunger

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.