1P8B

SOLUTION STRUCTURE OF PA1B, A 37-AMINO ACID INSECTICIDAL PROTEIN EXTRACTED FROM PEA SEEDS (PISUM SATIVUM)

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2.1mM PA1b; 0.02% NaN3; 50% H2O, 50% TFE-d2	50% H20, 50% TFE-d2		4.8	ambient	293
2	2D TOCSY	2.1mM PA1b; 0.02% NaN3; 50% H2O, 50% TFE-d2	50% H20, 50% TFE-d2		4.8	ambient	293
3	DQF-COSY	2.1mM PA1b; 0.02% NaN3; 50% H2O, 50% TFE-d2	50% H20, 50% TFE-d2		4.8	ambient	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600

NMR Refinement
Method	Details	Software
Torsion angle simulated annealing, molecular dynamics in explicit solvent	The structures are based on 858 NOE-derived distance restraints, 15 dihedral angle restraints and 7 hydrogen bond restraints	NMRPipe

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	100
Conformers Submitted Total Number	15
Representative Model	1 (fewest violations)

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe	2.1	Delaglio
2	data analysis	XEASY	6001	Bartels
3	structure solution	CNS	1.1	Brunger
4	structure solution	ARIA	1.1	Linge
5	refinement	ARIA	1.1	Linge