Experiment: 7AAF

Structural evolution of the tissue-specific U2AF2 paralog and alternative splicing factor LS2

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 800 800
2	2D 1H-13C HSQC aliphatic	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 800 800
3	2D 1H-13C HSQC aromatic	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 800 800
4	3D HNCACB	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 750 750
5	3D HNCA	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 750 750
8	3D 1H-15N NOESY	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 900 900
6	3D 1H-13C NOESY aliphatic	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 800 800
9	3D 1H-13C NOESY aromatic	0.5 mM 13C 15N LS2 RRM2, 0.02 mM 13C 15N potassium phosphate pH 6.5, 0.05 mM 13C 15N sodium chloride, 0.002 mM 13C 15N DTT	90% H2O/10% D2O	0.07 mM	6.5	1 atm	298	Bruker AVANCE 800 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE 750	750
2	Bruker	AVANCE 800	800
3	Bruker	AVANCE 900	900

NMR Refinement
Method	Details	Software
simulated annealing		CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	40
Conformers Submitted Total Number	10
Representative Model	1 (medoid)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS		Brunger A. T. et.al.
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	Sparky		Goddard
4	peak picking	Sparky		Goddard