1 | Sample 1: 0.2 mM [U-15N; U-13C; U-2H] PARP-1 1, 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 95% H2O/5% D2O | 95% H2O/5% D2O2 | Sample 2: 0.2 mM [U-15N; U-13C; U-70% 2H] PARP-1 1, 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 95% H2O/5% D2O | 95% H2O/5% D2O3 | Sample 3: 0.2 mM [U-98% 2H; U-98% 15N] PARP-1 1, 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 95% H2O/5% D2O | 95% H2O/5% D2O4 | Sample 4a: 0.2 MM PARP-1 1-214, Uniform [2H,15N,13C], back-labeled with [1H,13C] in the delta-methyl groups of Ile and all methyl groups of Leu and Val residues, using sodium [4-13C, 3,3-2H2] alpha-ketobutyrate and sodium [3- 2H, 4,4'-13C2] alpha-ketoisovalerate as precursors to maximize protonation of methyl groups, for use in NOE experiments; sodium [3-2H, 4,4'-13C2] alpha-ketoisovalerate was prepared from sodium [4,4'-13C2] alpha-ketoisovalerate by exchange with 2H2O at pH 12.5 and 45 C for 3 hrs. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 95% H2O/5% D2O | 95% H2O/5% D2O5 | Sample 4b: 0.2 MM PARP-1 1-214, Uniform [2H,15N,13C], back-labeled with [1H,13C] in the delta-methyl groups of Ile and all methyl groups of Leu and Val residues, using sodium [3,3-2H2,13C4] alpha-ketobutyrate and sodium [3- 2H,13C5] alpha-ketoisovalerate as precursors to produce linear chains of 13C in the sidechains of Val and Leu, for use in assignment experiments to link methyl signals to C-alpha signals. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O6 | Sample 5: 0.2 MM PARP-1 1-214, Uniform [2H,15N,13C], back-labeled with [1H,13C] in the methyl groups of Met residues in addition to Ile, Leu and Val methyl groups as in sample 4a. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O7 | Sample 6: 0.2 MM PARP-1 1-214, Uniform [2H,15N,13C]; back-labeled with [1H,13C] in the methyl groups of Ile, Leu and Val methyl groups as in sample 4a and [1H,13C,15N] Phe residues. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O8 | Sample 7: 0.2 MM PARP-1 1-214, Sortase ligated, block-labelled sample. (N.B. residues 103 and 104 of WT sequence deleted, additional residues LPETGGG inserted between residues 102 and 105; this sample was not used for making any assignments of residues in this region, which is in the flexible linker between domains). Labelling for residues 1-102 (and LPET of insertion): uniform [1H,12C,15N]. Labelling for residues 105-214 (and GGG of insertion): [2H,15N,13C] back-labeled with [1H,13C] Ile, Leu Val and Met methyl groups labeled as in sample 5. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O9 | Sample 8: 0.2 MM PARP-1 1-214, Sortase ligated, block-labelled sample. (N.B. residues 103 and 104 of WT sequence deleted, additional residues LPETGGG inserted between residues 102 and 105; this sample was not used for making any assignments of residues in this region, which is in the flexible linker between domains). Labelling for residues 1-102 (and LPET of insertion): uniform [1H,12C,15N]. Labelling for residues 105-214 (and GGG of insertion): [2H,15N,13C] back labeled with [1H,13C] Met methyl groups as in sample 5 and [13C,15N,1H] Arg residues. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O10 | Sample 9: 0.2 MM PARP-1 1-214, Sortase ligated, block-labelled sample. (N.B. residues 103 and 104 of WT sequence deleted, additional residues LPETGGG inserted between residues 102 and 105; this sample was not used for making any assignments of residues in this region, which is in the flexible linker between domains). Labelling for residues 1-102 (and LPET of insertion): [2H,15N,13C] back-labeled with Ile, Leu and Val methyl groups labeled as in sample 4a and [1H,13C,15N] Arg residues. Labelling for residues 105-214 (and GGG of insertion): uniform [1H,12C,15N]. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 95% H2O/5% D2O | 95% H2O/5% D2O11 | Sample 10: 0.2 MM PARP-1 1-214, Sortase ligated, block-labelled sample. (N.B. residues 103 and 104 of WT sequence deleted, additional residues LPETGGG inserted between residues 102 and 105; this sample was not used for making any assignments of residues in this region, which is in the flexible linker between domains). Labelling for residues 1-102 (and LPET of insertion): [2H,15N,13C] back-labeled with Ile, Leu and Val methyl groups labeled as in sample 4a and [1H,13C,15N] Phe residues. Labelling for residues 105-214 (and GGG of insertion): uniform [1H,12C,15N]. 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O12 | Sample 11: 0.2 mM see Sample details section PARP-1 1, 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O13 | Sample 12: 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O14 | Sample 13: 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 95% H2O/5% D2O | 95% H2O/5% D2O15 | Sample 14: 0.2 mM [U-15N; U-13C; U-2H] PARP-1 1, 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 mM ZnSO4, 100% D2O | 100% D2O16 | Sample 15: 0.2 mM [U-15N; U-13C; U-2H] PARP-1 1, 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 uM ZnSO4, 200 mM sodium chloride, 95% H2O/5% D2O | 95% H2O/5% D2O17 | Sample 16: 0.2 mM [U-15N; U-13C; U-2H] PARP-1 1, 0.2 mM DNA (45-MER), 50 mM [U-2H] TRIS, 1 mM [U-2H] DTT, 0.1 uM ZnSO4, 200 mM sodium chloride, 95% H2O/5% D2O | 95% H2O/5% D2O | | | | | | | | | | | | | | | | |