8QAS

Conformations of macrocyclic peptides sampled by exact NOEs: models for cell-permeability. NMR structure of Omphalotin A in methanol / water indoleOut conformation.

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	20 uM omphalotin A	methanol / water	0 M	7	1 bar	278	Bruker AVANCE III HD 900
2	2D 1H-1H TOCSY	20 uM omphalotin A	methanol / water	0 M	7	1 bar	278	Bruker AVANCE III HD 900
3	2D 1H-13C HSQC	20 uM omphalotin A	methanol / water	0 M	7	1 bar	278	Bruker AVANCE III HD 900

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III HD	900

NMR Refinement
Method	Details	Software
simulated annealing		Amber

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	100
Conformers Submitted Total Number	19
Representative Model	18 (fewest violations)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	CcpNmr Analysis		CCPN
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
3	refinement	Amber		Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman
4	peak picking	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax

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.