2MG4

Computational design and experimental verification of a symmetric protein homodimer

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	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
2	2D 1H-13C HSQC	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
3	3D CBCA(CO)NH	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
4	3D HNCO	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
5	3D HNCACB	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
6	3D HBHA(CO)NH	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
7	3D H(CCO)NH	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
8	3D HCCH-TOCSY	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
9	3D HNHA	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
10	3D 1H-15N NOESY	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
11	3D 1H-13C NOESY aliphatic	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
12	3D 1H-13C NOESY aromatic	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
13	3D HCCH-COSY	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310
14	3D HCACO	20 mM ammonium acetate, 100 mM sodium chloride, 10 mM DTT, 0.02 % sodium azide, 5 mM calcium chloride, 1.9 mg/mL [U-100% 13C; U-100% 15N] protein	95% H2O/5% D2O	0.1	4.5	ambient	310

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

NMR Refinement
Method	Details	Software
simulated annealing		ARIA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	32
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	ARIA		Linge, O'Donoghue and Nilges
2	refinement	ARIA		Linge, O'Donoghue and Nilges