6B1G

Solution structure of TDP-43 N-terminal domain dimer.

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	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
2	2D 1H-15N HSQC	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
3	2D 1H-13C HSQC	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
4	2D 1H-13C HSQC	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
5	3D HNCO	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
22	3D HNCO	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
21	3D HNCA	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
20	3D HNCA	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
19	3D CBCA(CO)NH	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
18	3D CBCA(CO)NH	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
17	3D HBHA(CO)NH	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
16	3D HBHA(CO)NH	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
15	3D HCCH-COSY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
24	3D CCH-TOCSY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
23	3D CCH-TOCSY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
14	3D HCCH-COSY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
13	hbCBcgcdHD	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
12	hbCBcgcdHD	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
11	hbCBcgcdceHE	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
10	hbCBcgcdceHE	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
9	3D 1H-13C NOESY aliphatic	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
27	3D 1H-13C NOESY aliphatic	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
26	3D 1H-13C NOESY aromatic	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
25	3D 1H-13C NOESY aromatic	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
8	3D 1H-15N NOESY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
7	3D 1H-15N NOESY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE III HD 850
6	3D Filtered 1H-13C NOESY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
29	3D Filtered 1H-13C NOESY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
28	3D Filtered 1H-15N NOESY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD S48E, 2.0 mM TDP-43 NTD Y4R, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500
30	3D Filtered 1H-15N NOESY	0.7 mM [U-99% 13C; U-99% 15N] TDP-43 NTD Y4R, 2 mM TDP-43 NTD S48E, 20 mM HEPES, 1 mM DTT	90% H2O/10% D2O	0 mM	6.8	1 atm	298	Bruker AVANCE II 500

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III HD	850
2	Bruker	AVANCE II	500

NMR Refinement
Method	Details	Software
simulated annealing	Water refinement	X-PLOR NIH

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR NIH	2.45	Schwieters, Kuszewski, Tjandra and Clore
2	structure calculation	CYANA	3.0	Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	Sparky	3.114	Goddard
4	peak picking	Sparky	3.114	Goddard
5	collection	TopSpin	3.5	Bruker Biospin
6	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax