1EWW

SOLUTION STRUCTURE OF SPRUCE BUDWORM ANTIFREEZE PROTEIN AT 30 DEGREES CELSIUS

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C/15N-separated_NOESY	1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL	90% H2O, 10% D20	0	5.5	ambient	303
2	3D_15N-separated_NOESY	1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL	90% H2O, 10% D20	0	5.5	ambient	303
3	HNHA	0	5.5	ambient	303
4	HNCACB	1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL	90% H2O, 10% D20	0	5.5	ambient	303
5	CBCA(CO)NNH	1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL	90% H2O, 10% D20	0	5.5	ambient	303
6	HCCH-TOCSY	1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL	90% H2O, 10% D20	0	5.5	ambient	303
7	2D NOESY	1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL	90% H2O, 10% D20	0	5.5	ambient	303
8	3D_15N-separated_TOCSY	0	5.5	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	500
2	Varian	UNITY	600

NMR Refinement
Method	Details	Software
simulated annealing	1014 NOE-derived distance constraints, 88 dihedral angle restraints, 59 carbon chemical shift restraints	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	10 (closest to the average)

Additional NMR Experimental Information
Details	The structure was determined using triple-resonance NMR spectroscopy.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR	3.851	Brunger
2	processing	NMRPipe	1.7	Delaglio
3	data analysis	PIPP	4.2	Garrett
4	refinement	X-PLOR	3.851	Brunger