2KC8

Structure of E. coli toxin RelE (R81A/R83A) mutant in complex with antitoxin RelBc (K47-L79) peptide

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	0.5 mM [U-13C; U-15N] RelE-1, 0.5 mM RelBc-2, 25 mM sodium phosphate-3, 500 mM sodium chloride-4, 1 mM DTT-5, 0.5 mM sodium azide-6	90% H2O/10% D2O	0.5	6.5	ambient	296.5
2	3D HNCACB	0.5 mM [U-13C; U-15N] RelE-1, 0.5 mM RelBc-2, 25 mM sodium phosphate-3, 500 mM sodium chloride-4, 1 mM DTT-5, 0.5 mM sodium azide-6	90% H2O/10% D2O	0.5	6.5	ambient	296.5
3	3D C(CO)NH	0.5 mM [U-13C; U-15N] RelE-1, 0.5 mM RelBc-2, 25 mM sodium phosphate-3, 500 mM sodium chloride-4, 1 mM DTT-5, 0.5 mM sodium azide-6	90% H2O/10% D2O	0.5	6.5	ambient	296.5
4	3D H(CCO)NH	0.5 mM [U-13C; U-15N] RelE-1, 0.5 mM RelBc-2, 25 mM sodium phosphate-3, 500 mM sodium chloride-4, 1 mM DTT-5, 0.5 mM sodium azide-6	90% H2O/10% D2O	0.5	6.5	ambient	296.5
5	3D HNCO	0.5 mM [U-13C; U-15N] RelE-1, 0.5 mM RelBc-2, 25 mM sodium phosphate-3, 500 mM sodium chloride-4, 1 mM DTT-5, 0.5 mM sodium azide-6	90% H2O/10% D2O	0.5	6.5	ambient	296.5
6	3D 1H-15N NOESY	0.5 mM [U-13C; U-15N] RelE-1, 0.5 mM RelBc-2, 25 mM sodium phosphate-3, 500 mM sodium chloride-4, 1 mM DTT-5, 0.5 mM sodium azide-6	90% H2O/10% D2O	0.5	6.5	ambient	296.5
7	2D 1H-13C HSQC	0.5 mM [U-13C; U-15N] RelE-13, 0.5 mM RelBc-14, 25 mM sodium phosphate-15, 500 mM sodium chloride-16, 1 mM DTT-17, 0.5 mM sodium azide-18	100% D2O	0.5	6.5	ambient	296.5
8	3D HCCH-COSY	0.5 mM [U-13C; U-15N] RelE-13, 0.5 mM RelBc-14, 25 mM sodium phosphate-15, 500 mM sodium chloride-16, 1 mM DTT-17, 0.5 mM sodium azide-18	100% D2O	0.5	6.5	ambient	296.5
9	3D HCCH-TOCSY	0.5 mM [U-13C; U-15N] RelE-13, 0.5 mM RelBc-14, 25 mM sodium phosphate-15, 500 mM sodium chloride-16, 1 mM DTT-17, 0.5 mM sodium azide-18	100% D2O	0.5	6.5	ambient	296.5
10	3D 1H-13C NOESY	0.5 mM [U-13C; U-15N] RelE-13, 0.5 mM RelBc-14, 25 mM sodium phosphate-15, 500 mM sodium chloride-16, 1 mM DTT-17, 0.5 mM sodium azide-18	100% D2O	0.5	6.5	ambient	296.5
11	2D 1H-15N HSQC	0.5 mM RelE-7, 0.5 mM [U-13C; U-15N] RelBc-8, 25 mM sodium phosphate-9, 500 mM sodium chloride-10, 1 mM DTT-11, 0.5 mM sodium azide-12	90% H2O/10% D2O	0.5	6.5	ambient	296.5
12	3D HNCACB	0.5 mM RelE-7, 0.5 mM [U-13C; U-15N] RelBc-8, 25 mM sodium phosphate-9, 500 mM sodium chloride-10, 1 mM DTT-11, 0.5 mM sodium azide-12	90% H2O/10% D2O	0.5	6.5	ambient	296.5
13	3D C(CO)NH	0.5 mM RelE-7, 0.5 mM [U-13C; U-15N] RelBc-8, 25 mM sodium phosphate-9, 500 mM sodium chloride-10, 1 mM DTT-11, 0.5 mM sodium azide-12	90% H2O/10% D2O	0.5	6.5	ambient	296.5
14	3D H(CCO)NH	0.5 mM RelE-7, 0.5 mM [U-13C; U-15N] RelBc-8, 25 mM sodium phosphate-9, 500 mM sodium chloride-10, 1 mM DTT-11, 0.5 mM sodium azide-12	90% H2O/10% D2O	0.5	6.5	ambient	296.5
15	3D HNCO	0.5 mM RelE-7, 0.5 mM [U-13C; U-15N] RelBc-8, 25 mM sodium phosphate-9, 500 mM sodium chloride-10, 1 mM DTT-11, 0.5 mM sodium azide-12	90% H2O/10% D2O	0.5	6.5	ambient	296.5
16	3D 1H-15N NOESY	0.5 mM RelE-7, 0.5 mM [U-13C; U-15N] RelBc-8, 25 mM sodium phosphate-9, 500 mM sodium chloride-10, 1 mM DTT-11, 0.5 mM sodium azide-12	90% H2O/10% D2O	0.5	6.5	ambient	296.5
17	2D 1H-13C HSQC	0.5 mM RelE-19, 0.5 mM [U-13C; U-15N] RelBc-20, 25 mM sodium phosphate-21, 500 mM sodium chloride-22, 1 mM DTT-23, 0.5 mM sodium azide-24	100% D2O	0.5	6.5	ambient	296.5
18	3D HCCH-COSY	0.5 mM RelE-19, 0.5 mM [U-13C; U-15N] RelBc-20, 25 mM sodium phosphate-21, 500 mM sodium chloride-22, 1 mM DTT-23, 0.5 mM sodium azide-24	100% D2O	0.5	6.5	ambient	296.5
19	3D HCCH-TOCSY	0.5 mM RelE-19, 0.5 mM [U-13C; U-15N] RelBc-20, 25 mM sodium phosphate-21, 500 mM sodium chloride-22, 1 mM DTT-23, 0.5 mM sodium azide-24	100% D2O	0.5	6.5	ambient	296.5
20	3D 1H-13C NOESY	0.5 mM RelE-19, 0.5 mM [U-13C; U-15N] RelBc-20, 25 mM sodium phosphate-21, 500 mM sodium chloride-22, 1 mM DTT-23, 0.5 mM sodium azide-24	100% D2O	0.5	6.5	ambient	296.5
21	3D X-filtered 1H-13C NOESY	0.5 mM [U-13C; U-15N] RelE-13, 0.5 mM RelBc-14, 25 mM sodium phosphate-15, 500 mM sodium chloride-16, 1 mM DTT-17, 0.5 mM sodium azide-18	100% D2O	0.5	6.5	ambient	296.5
22	3D X-filtered 1H-13C NOESY	0.5 mM RelE-19, 0.5 mM [U-13C; U-15N] RelBc-20, 25 mM sodium phosphate-21, 500 mM sodium chloride-22, 1 mM DTT-23, 0.5 mM sodium azide-24	100% D2O	0.5	6.5	ambient	296.5

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800
2	Bruker	AVANCE	600
3	Varian	INOVA	500

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

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin	2.0	Bruker Biospin
2	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
3	data analysis	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
4	data analysis	XEASY		Bartels et al.
5	peak picking	XEASY		Bartels et al.
6	chemical shift assignment	XEASY		Bartels et al.
7	automated noe peak assignments	CYANA	2.1	Guntert, Mumenthaler and Wuthrich
8	structure calculation	CYANA	2.1	Guntert, Mumenthaler and Wuthrich
9	structure solution	CNS	1.1	Brunger, Adams, Clore, Gros, Nilges and Read
10	refinement	CNS	1.1	Brunger, Adams, Clore, Gros, Nilges and Read
11	structure analysis	MOLMOL		Koradi, Billeter and Wuthrich
12	data analysis	ProcheckNMR		Laskowski and MacArthur
13	collection	VNMR		Varian