2KP5

NMR structure of Hahellin, a beta-gamma crystallin

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	300 mM sodium chloride-1, 20 mM calcium chloride-2, 10 mM tris.cl-3, 1 mM sodium azide-4, 0.8 mM [U-15N] Hahellin-5	90% H2O/10% D2O		6.7	ambient	298
2	2D 1H-13C HSQC	300 mM sodium chloride-6, 20 mM calcium chloride-7, 10 mM tris.cl-8, 1 mM sodium azide-9, 0.8 mM [U-13C] Hahellin-10	100% D2O		6.7	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
simulated annealing, torsion angle dynamics		CYANA

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CYANA		Guntert, Mumenthaler, Wuthrich
2	chemical shift assignment	CARA		Keller, Wuthrich
3	processing	Felix		Accelrys Software Inc.
4	collection	TopSpin		Bruker Biospin
5	processing	TopSpin		Bruker Biospin
6	refinement	CYANA		Guntert, Mumenthaler, Wuthrich