1T0C

Solution Structure of Human Proinsulin C-Peptide

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D TOCSY	3mM C-peptide	50% H2O / 50% TFE-d2	0	7.0	ambient	283
2	2D NOESY	3mM C-peptide	50% H2O / 50% TFE-d2	0	7.0	ambient	283
3	DQF-COSY	3mM C-peptide	50% H2O / 50% TFE-d2	0	7.0	ambient	283

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

NMR Refinement
Method	Details	Software
Simulated annealing, torsion-angle dynamics, Powell minimisation	A total of 268 NOE distance restraints and 10 J-coupling constant restraints were used in the final structure calculation.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	800
Conformers Submitted Total Number	30

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6	Bruker
2	processing	XwinNMR	2.6	Bruker
3	data analysis	AURELIA	2.7	Neidig
4	structure solution	CNS	1.1	Brunger
5	refinement	CNS	1.1	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 R01GM157729.