1TWO

NMR structure of the pheromone binding protein from Antheraea polyphemus at acidic pH

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1MM APOLPBP U-15N,13C, 50MM PHOSPHATE BUFFER, 1MM EDTA, 0.1% NAN3	95% H2O/5% D2O	50mM phosphate	5.2	ambient	308
2	3D_13C-separated_NOESY	1MM APOLPBP U-15N,13C, 50MM PHOSPHATE BUFFER, 1MM EDTA, 0.1% NAN3	95% H2O/5% D2O	50mM phosphate	5.2	ambient	308
3	3D_13C-separated_NOESY	1MM APOLPBP U-15N,13C, 50MM PHOSPHATE BUFFER, 1MM EDTA, 0.1% NAN3	95% H2O/5% D2O	50mM phosphate	5.2	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	600
2	Bruker	DMX	750
3	Bruker	DRX	800

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing	1469 NOE-derived distance constraints, 272 dihedral angle restraints, 110 distance restraints from hydrogen bonds	NMRPipe

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	500
Conformers Submitted Total Number	20
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	CARRIER FREQUENCIES in 13C SEPARATED NOESY EXPERIMENTS: 43ppm and 125ppm

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe	2.2
2	data analysis	NMRView	5.0.4
3	structure solution	CYANA	1.0.6
4	refinement	CYANA	1.0.6	Guntert, P.

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.