1JBF

Hairpin Peptide that Inhibits IgE Activity by Binding to the High Affinity IgE Receptor

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2 mM IGE06	92% H2O/8% D2O, pH 5.7, 0.1 mM NaN3, 0.1 mM DSS	no salt	5.7	ambient	288
2	DQF-COSY	2 mM IGE06	92% H2O/8% D2O, pH 5.7, 0.1 mM NaN3, 0.1 mM DSS	no salt	5.7	ambient	288
3	2D TOCSY	2 mM IGE06	92% H2O/8% D2O, pH 5.7, 0.1 mM NaN3, 0.1 mM DSS	no salt	5.7	ambient	288
4	2D COSY-35	2 mM IGE06	92% H2O/8% D2O, pH 5.7, 0.1 mM NaN3, 0.1 mM DSS	no salt	5.7	ambient	288
5	2D ROESY	2 mM IGE06	92% H2O/8% D2O, pH 5.7, 0.1 mM NaN3, 0.1 mM DSS	no salt	5.7	ambient	288
6	2D NOESY	2 mM IGE06	100% D2O, pH 5.7, 0.1 mM NaN3, 0.1 mM DSS	no salt	5.7	ambient	288
7	2D COSY-35	2 mM IGE06	100% D2O, pH 5.7, 0.1 mM NaN3, 0.1 mM DSS	no salt	5.7	ambient	288

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AMX	500

NMR Refinement
Method	Details	Software
Hybrid distance geometry/simulated annealing followed by restrained molecular dynamics.	Structures were calculated based on a total of 109 distance and 16 dihedral angle restraints. The final ensemble of 20 models has no distance or dihedral angle restraint violations greater than 0.1 angstrom or 2 degrees, respectively.	Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with acceptable covalent geometry,structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Additional NMR Experimental Information
Details	3JHNHa were obtained by fitting Lorentzian lines to the antiphase doublets of HN-Ha peaks in a 2QF-COSY spectrum processed to high digital resolution in F2. 3JHNHa for Gly8 and Gly11 were obtained from analysis of the COSY-35 spectrum acquired in H2O. 3JHaHb were extracted from a COSY-35 spectrum acquired in D2O.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	Felix	97.0	Molecular Simulations, Inc.
2	collection	UXNMR		Bruker, Inc.
3	structure solution	DGII	97.0	Havel
4	refinement	Discover	97.0	Molecular Simulations, Inc.

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.