7D3V

Non-specific and specific interactions work cooperatively to promote cytidine deamination catalyzed by APOBEC3A

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D HNCO	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
2	3D HNCACB	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
3	3D HNCA	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
4	3D HN(CO)CA	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
5	3D CBCA(CO)NH	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
6	3D 1H-15N NOESY	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
7	3D 1H-15N TOCSY	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
8	2D 1H-15N HSQC	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
9	2D 1H-13C HSQC	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	100% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
10	3D HCCH-TOCSY	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	100% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
11	3D 1H-13C NOESY aliphatic	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	100% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
12	3D 1H-13C NOESY aromatic	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	100% D2O	375 mM	7.3	1 atm	293	Bruker AVANCE 900
13	2D filter TOCSY	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	100% D2O	375 mM	7.3	1 atm	293	Agilent DD2 800
14	2D filter NOESY	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	100% D2O	375 mM	7.3	1 atm	293	Agilent DD2 800
15	3D 15N-filter-edit NOESY	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	90% H2O/10% D2O	375 mM	7.3	1 atm	293	Agilent DD2 800
16	3D 13C-filter-edit NOESY	25 mM sodium phosphate, 200 mM sodium chloride, 50 uM Zinc chloride, 5 mM DTT, 0.28 mM [U-13C; U-15N] A3A, 0.56 mM DNA	100% D2O	375 mM	7.3	1 atm	293	Agilent DD2 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	900
2	Agilent	DD2	800

NMR Refinement
Method	Details	Software
simulated annealing		CNS

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	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
2	chemical shift assignment	Sparky		Goddard
3	structure calculation	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
4	refinement	CNS		Brunger, Adams, Clore, Gros, Nilges and Read

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.