1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Hill, R.B. DeGrado, W.F. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 1 90.00 90.00 90.00 1.000 1.000 1.000 C6 H15 N4 O2 1 175.209 y ARGININE L-peptide linking C5 H9 N O4 147.129 y GLUTAMIC ACID L-peptide linking C2 H5 N O2 75.067 y GLYCINE peptide linking C6 H10 N3 O2 1 156.162 y HISTIDINE L-peptide linking C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C6 H13 N O2 131.173 y LEUCINE L-peptide linking C6 H15 N2 O2 1 147.195 y LYSINE L-peptide linking C9 H11 N O2 165.189 y PHENYLALANINE L-peptide linking C5 H9 N O2 115.130 y PROLINE L-peptide linking C11 H12 N2 O2 204.225 y TRYPTOPHAN L-peptide linking C5 H11 N O2 117.146 y VALINE L-peptide linking N 1 N N N 2 S C N 3 N C N 4 N O N 5 N C N 6 N C N 7 N C N 8 N N N 9 N C N 10 N N N 11 N N N 12 N O N 13 N H N 14 N H N 15 N H N 16 N H N 17 N H N 18 N H N 19 N H N 20 N H N 21 N H N 22 N H N 23 N H N 24 N H N 25 N H N 26 N H N 27 N H N 28 N N N 29 S C N 30 N C N 31 N O N 32 N C N 33 N C N 34 N C N 35 N O N 36 N O N 37 N O N 38 N H N 39 N H N 40 N H N 41 N H N 42 N H N 43 N H N 44 N H N 45 N H N 46 N H N 47 N N N 48 N C N 49 N C N 50 N O N 51 N O N 52 N H N 53 N H N 54 N H N 55 N H N 56 N H N 57 N N N 58 S C N 59 N C N 60 N O N 61 N C Y 62 N C Y 63 N N Y 64 N C Y 65 N C Y 66 N N N 67 N O N 68 N H N 69 N H N 70 N H N 71 N H N 72 N H N 73 N H N 74 N H N 75 N H N 76 N H N 77 N H N 78 N N N 79 S C N 80 N C N 81 N O N 82 S C N 83 N C N 84 N C N 85 N C N 86 N O N 87 N H N 88 N H N 89 N H N 90 N H N 91 N H N 92 N H N 93 N H N 94 N H N 95 N H N 96 N H N 97 N H N 98 N H N 99 N H N 100 N N N 101 S C N 102 N C N 103 N O N 104 N C N 105 N C N 106 N C N 107 N C N 108 N O N 109 N H N 110 N H N 111 N H N 112 N H N 113 N H N 114 N H N 115 N H N 116 N H N 117 N H N 118 N H N 119 N H N 120 N H N 121 N H N 122 N N N 123 S C N 124 N C N 125 N O N 126 N C N 127 N C N 128 N C N 129 N C N 130 N N N 131 N O N 132 N H N 133 N H N 134 N H N 135 N H N 136 N H N 137 N H N 138 N H N 139 N H N 140 N H N 141 N H N 142 N H N 143 N H N 144 N H N 145 N H N 146 N H N 147 N N N 148 S C N 149 N C N 150 N O N 151 N C Y 152 N C Y 153 N C Y 154 N C Y 155 N C Y 156 N C Y 157 N C N 158 N O N 159 N H N 160 N H N 161 N H N 162 N H N 163 N H N 164 N H N 165 N H N 166 N H N 167 N H N 168 N H N 169 N H N 170 N N N 171 S C N 172 N C N 173 N O N 174 N C N 175 N C N 176 N C N 177 N O N 178 N H N 179 N H N 180 N H N 181 N H N 182 N H N 183 N H N 184 N H N 185 N H N 186 N H N 187 N N N 188 S C N 189 N C N 190 N O N 191 N C Y 192 N C Y 193 N C Y 194 N C Y 195 N N Y 196 N C Y 197 N C Y 198 N C Y 199 N C Y 200 N C N 201 N O N 202 N H N 203 N H N 204 N H N 205 N H N 206 N H N 207 N H N 208 N H N 209 N H N 210 N H N 211 N H N 212 N H N 213 N H N 214 N N N 215 S C N 216 N C N 217 N O N 218 N C N 219 N C N 220 N C N 221 N O N 222 N H N 223 N H N 224 N H N 225 N H N 226 N H N 227 N H N 228 N H N 229 N H N 230 N H N 231 N H N 232 N H N 1 N sing N 2 N sing N 3 N sing N 4 N sing N 5 N sing N 6 N sing N 7 N doub N 8 N sing N 9 N sing N 10 N sing N 11 N sing N 12 N sing N 13 N sing N 14 N sing N 15 N sing N 16 N sing N 17 N sing N 18 N sing N 19 N sing N 20 N sing N 21 N doub N 22 N sing N 23 N sing N 24 N sing N 25 N sing N 26 N sing N 27 N sing N 28 N sing N 29 N sing N 30 N sing N 31 N sing N 32 N sing N 33 N doub N 34 N sing N 35 N sing N 36 N sing N 37 N sing N 38 N sing N 39 N sing N 40 N sing N 41 N doub N 42 N sing N 43 N sing N 44 N sing N 45 N sing N 46 N sing N 47 N sing N 48 N sing N 49 N sing N 50 N sing N 51 N doub N 52 N sing N 53 N sing N 54 N sing N 55 N sing N 56 N sing N 57 N sing N 58 N sing N 59 N sing N 60 N doub N 61 N sing N 62 N sing N 63 N sing N 64 N sing Y 65 N sing Y 66 N doub Y 67 N doub N 68 N sing Y 69 N sing N 70 N sing Y 71 N sing N 72 N sing N 73 N sing N 74 N sing N 75 N sing N 76 N sing N 77 N sing N 78 N sing N 79 N sing N 80 N sing N 81 N doub N 82 N sing N 83 N sing N 84 N sing N 85 N sing N 86 N sing N 87 N sing N 88 N sing N 89 N sing N 90 N sing N 91 N sing N 92 N sing N 93 N sing N 94 N sing N 95 N sing N 96 N sing N 97 N sing N 98 N sing N 99 N sing N 100 N sing N 101 N sing N 102 N doub N 103 N sing N 104 N sing N 105 N sing N 106 N sing N 107 N sing N 108 N sing N 109 N sing N 110 N sing N 111 N sing N 112 N sing N 113 N sing N 114 N sing N 115 N sing N 116 N sing N 117 N sing N 118 N sing N 119 N sing N 120 N sing N 121 N sing N 122 N sing N 123 N doub N 124 N sing N 125 N sing N 126 N sing N 127 N sing N 128 N sing N 129 N sing N 130 N sing N 131 N sing N 132 N sing N 133 N sing N 134 N sing N 135 N sing N 136 N sing N 137 N sing N 138 N sing N 139 N sing N 140 N sing N 141 N sing N 142 N sing N 143 N sing N 144 N sing N 145 N sing N 146 N sing N 147 N doub N 148 N sing N 149 N sing N 150 N sing N 151 N sing Y 152 N doub Y 153 N sing Y 154 N sing N 155 N sing Y 156 N doub N 157 N sing Y 158 N doub N 159 N sing Y 160 N sing N 161 N sing N 162 N sing N 163 N sing N 164 N sing N 165 N sing N 166 N sing N 167 N sing N 168 N sing N 169 N sing N 170 N doub N 171 N sing N 172 N sing N 173 N sing N 174 N sing N 175 N sing N 176 N sing N 177 N sing N 178 N sing N 179 N sing N 180 N sing N 181 N sing N 182 N sing N 183 N sing N 184 N sing N 185 N sing N 186 N sing N 187 N doub N 188 N sing N 189 N sing N 190 N sing N 191 N sing Y 192 N doub Y 193 N sing Y 194 N sing N 195 N sing Y 196 N doub Y 197 N sing Y 198 N sing N 199 N sing Y 200 N sing Y 201 N doub N 202 N sing Y 203 N doub N 204 N sing Y 205 N sing N 206 N sing N 207 N sing N 208 N sing N 209 N sing N 210 N sing N 211 N sing N 212 N sing N 213 N sing N 214 N sing N 215 N doub N 216 N sing N 217 N sing N 218 N sing N 219 N sing N 220 N sing N 221 N sing N 222 N sing N 223 N sing N 224 N sing N 225 N sing N 226 N sing US J.Am.Chem.Soc. JACSAT 0004 0002-7863 120 1138 1145 10.1021/ja9733649 -1 Solution Structure of Alpha2D, A Nativelike De Novo Designed Protein 1998 US J.Am.Chem.Soc. JACSAT 0004 0002-7863 117 7558 7559 A De Novo Designed Protein Mimics the Native State of Natural Proteins 1995 10.2210/pdb1qp6/pdb pdb_00001qp6 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 4258.936 PROTEIN (ALPHA2D) 2 syn polymer no no GEVEELEKKFKELWKGPRRGEIEELHKKFHELIKG GEVEELEKKFKELWKGPRRGEIEELHKKFHELIKG A,B polypeptide(L) n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n database_2 pdbx_struct_assembly pdbx_struct_oper_list chem_comp_atom chem_comp_bond repository Initial release Version format compliance Version format compliance Database references Derived calculations Data collection 1 0 1999-06-09 1 1 2008-04-27 1 2 2011-07-13 1 3 2022-03-02 1 4 2024-05-22 _database_2.pdbx_DOI _database_2.pdbx_database_accession RCSB Y RCSB 1999-06-01 REL REL THE PEPTIDE WAS CHEMICALLY SYNTHESIZED. THIS SEQUENCE WAS DESIGNED TO FOLD INTO A HELIX-TURN-HELIX PEPTIDE THAT DIMERIZES TO FORM A FOUR-HELIX BUNDLE. sample THE STRUCTURE WAS DETERMINED USING 2D HOMONUCLEAR TECHNIQUES. BECAUSE ALPHA2D EXISTS AS A SYMMETRIC HOMODIMER, THERE EXISTS A PROBLEM OF DETERMINING WHETHER AN OBSERVED NOE ARISES FROM AN INTER- OR INTRA- MONOMER CORRELATION. THIS PROBLEM WAS DEALT WITH AS DESCRIBED REMARK 3. structures with the least restraint violations 60 16 2D NOESY DQF-COSY E-COSY 52 mM 7.3 AMBIENT 298.0 K STRUCTURE BASED ON 834 RESTRAINTS: 140 LONG-RANGE RESTRAINTS, 30 PHI ANGLE RESTRAINTS, AND 14 CHI-1 ANGLE RESTRAINTS. 83 OF THE LONG-RANGE NOES (59%) WERE DETERMINED TO ARISE FROM INTER-MONOMER CORRELATIONS BY COMPUTATIONAL METHODS. THE OTHER NOES WERE TREATED USING A WEIGHTING FUNCTION DEVELOPED FOR SYMMMETRIC HOMODIMERS THAT ALLOWS EACH NOE TO ARISE FROM EITHER AN INTRA- OR INTER- MONOMER CORRELATIONS AS DESCRIBED BY NILGES, M. PROTEINS (1993) 17:297- 309. SYMMETRY TERMS WERE EMPLOYED FOR C-ALPHA CARBONS ONLY. SEE JACS(1998)120: 1138-1145 FOR MORE DETAILS. SIMULATED ANNEALING FOR 48 PS AT 2000K FOLLOWED BY A SLOW COOL TO 50K 11 lowest energy 2 MM ALPHA2D TRIS, PH 7.3, 25 C BRUNGER refinement X-PLOR 3.1 BRUNGER structure solution X-PLOR 3.1 600 Bruker AMX GLY 1 n 1 GLY 1 A GLU 2 n 2 GLU 2 A VAL 3 n 3 VAL 3 A GLU 4 n 4 GLU 4 A GLU 5 n 5 GLU 5 A LEU 6 n 6 LEU 6 A GLU 7 n 7 GLU 7 A LYS 8 n 8 LYS 8 A LYS 9 n 9 LYS 9 A PHE 10 n 10 PHE 10 A LYS 11 n 11 LYS 11 A GLU 12 n 12 GLU 12 A LEU 13 n 13 LEU 13 A TRP 14 n 14 TRP 14 A LYS 15 n 15 LYS 15 A GLY 16 n 16 GLY 16 A PRO 17 n 17 PRO 17 A ARG 18 n 18 ARG 18 A ARG 19 n 19 ARG 19 A GLY 20 n 20 GLY 20 A GLU 21 n 21 GLU 21 A ILE 22 n 22 ILE 22 A GLU 23 n 23 GLU 23 A GLU 24 n 24 GLU 24 A LEU 25 n 25 LEU 25 A HIS 26 n 26 HIS 26 A LYS 27 n 27 LYS 27 A LYS 28 n 28 LYS 28 A PHE 29 n 29 PHE 29 A HIS 30 n 30 HIS 30 A GLU 31 n 31 GLU 31 A LEU 32 n 32 LEU 32 A ILE 33 n 33 ILE 33 A LYS 34 n 34 LYS 34 A GLY 35 n 35 GLY 35 A GLY 1 n 1 GLY 1 B GLU 2 n 2 GLU 2 B VAL 3 n 3 VAL 3 B GLU 4 n 4 GLU 4 B GLU 5 n 5 GLU 5 B LEU 6 n 6 LEU 6 B GLU 7 n 7 GLU 7 B LYS 8 n 8 LYS 8 B LYS 9 n 9 LYS 9 B PHE 10 n 10 PHE 10 B LYS 11 n 11 LYS 11 B GLU 12 n 12 GLU 12 B LEU 13 n 13 LEU 13 B TRP 14 n 14 TRP 14 B LYS 15 n 15 LYS 15 B GLY 16 n 16 GLY 16 B PRO 17 n 17 PRO 17 B ARG 18 n 18 ARG 18 B ARG 19 n 19 ARG 19 B GLY 20 n 20 GLY 20 B GLU 21 n 21 GLU 21 B ILE 22 n 22 ILE 22 B GLU 23 n 23 GLU 23 B GLU 24 n 24 GLU 24 B LEU 25 n 25 LEU 25 B HIS 26 n 26 HIS 26 B LYS 27 n 27 LYS 27 B LYS 28 n 28 LYS 28 B PHE 29 n 29 PHE 29 B HIS 30 n 30 HIS 30 B GLU 31 n 31 GLU 31 B LEU 32 n 32 LEU 32 B ILE 33 n 33 ILE 33 B LYS 34 n 34 LYS 34 B GLY 35 n 35 GLY 35 B author_defined_assembly 2 dimeric 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 1_555 x,y,z identity operation 0.0000000000 0.0000000000 0.0000000000 1 A ARG 18 0.105 SIDE CHAIN 1 A ARG 19 0.311 SIDE CHAIN 1 B ARG 18 0.105 SIDE CHAIN 1 B ARG 19 0.311 SIDE CHAIN 2 A ARG 18 0.242 SIDE CHAIN 2 A ARG 19 0.309 SIDE CHAIN 2 B ARG 18 0.243 SIDE CHAIN 2 B ARG 19 0.309 SIDE CHAIN 3 A ARG 18 0.269 SIDE CHAIN 3 A ARG 19 0.310 SIDE CHAIN 3 B ARG 18 0.270 SIDE CHAIN 3 B ARG 19 0.309 SIDE CHAIN 4 A ARG 18 0.172 SIDE CHAIN 4 A ARG 19 0.318 SIDE CHAIN 4 B ARG 18 0.172 SIDE CHAIN 4 B ARG 19 0.317 SIDE CHAIN 5 A ARG 18 0.263 SIDE CHAIN 5 A ARG 19 0.303 SIDE CHAIN 5 B ARG 18 0.262 SIDE CHAIN 5 B ARG 19 0.303 SIDE CHAIN 6 A ARG 18 0.229 SIDE CHAIN 6 A ARG 19 0.298 SIDE CHAIN 6 B ARG 18 0.227 SIDE CHAIN 6 B ARG 19 0.298 SIDE CHAIN 7 A ARG 18 0.247 SIDE CHAIN 7 A ARG 19 0.154 SIDE CHAIN 7 B ARG 18 0.246 SIDE CHAIN 7 B ARG 19 0.151 SIDE CHAIN 8 A ARG 18 0.239 SIDE CHAIN 8 A ARG 19 0.301 SIDE CHAIN 8 B ARG 18 0.238 SIDE CHAIN 8 B ARG 19 0.301 SIDE CHAIN 9 A ARG 18 0.255 SIDE CHAIN 9 A ARG 19 0.258 SIDE CHAIN 9 B ARG 18 0.256 SIDE CHAIN 9 B ARG 19 0.258 SIDE CHAIN 10 A ARG 18 0.264 SIDE CHAIN 10 A ARG 19 0.299 SIDE CHAIN 10 B ARG 18 0.264 SIDE CHAIN 10 B ARG 19 0.298 SIDE CHAIN 11 A ARG 18 0.193 SIDE CHAIN 11 A ARG 19 0.217 SIDE CHAIN 11 B ARG 18 0.194 SIDE CHAIN 11 B ARG 19 0.217 SIDE CHAIN 12 A ARG 18 0.316 SIDE CHAIN 12 A ARG 19 0.222 SIDE CHAIN 12 B ARG 18 0.316 SIDE CHAIN 12 B ARG 19 0.222 SIDE CHAIN 13 A ARG 18 0.136 SIDE CHAIN 13 A ARG 19 0.251 SIDE CHAIN 13 B ARG 18 0.136 SIDE CHAIN 13 B ARG 19 0.251 SIDE CHAIN 14 A ARG 18 0.224 SIDE CHAIN 14 A ARG 19 0.230 SIDE CHAIN 14 B ARG 18 0.223 SIDE CHAIN 14 B ARG 19 0.231 SIDE CHAIN 15 A ARG 18 0.137 SIDE CHAIN 15 A ARG 19 0.318 SIDE CHAIN 15 B ARG 18 0.137 SIDE CHAIN 15 B ARG 19 0.317 SIDE CHAIN 16 A ARG 18 0.125 SIDE CHAIN 16 A ARG 19 0.255 SIDE CHAIN 16 B ARG 18 0.125 SIDE CHAIN 16 B ARG 19 0.255 SIDE CHAIN 1 A GLU 2 -133.01 -97.58 1 A PRO 17 -78.60 -157.17 1 A ARG 18 -53.32 -175.06 1 A ARG 19 -147.60 -49.64 1 A LYS 34 52.21 -174.06 1 B GLU 2 -132.99 -97.62 1 B PRO 17 -78.69 -157.16 1 B ARG 18 -53.26 -174.97 1 B ARG 19 -147.67 -49.61 1 B LYS 34 52.11 -174.17 2 A PRO 17 -76.43 -154.78 2 A ARG 18 -53.74 -175.06 2 A ARG 19 -149.92 -41.55 2 A LYS 34 53.18 95.38 2 B PRO 17 -76.29 -154.86 2 B ARG 18 -53.65 -174.99 2 B ARG 19 -150.06 -41.60 2 B LYS 34 53.23 95.46 3 A PRO 17 -77.31 -157.78 3 A ARG 18 -49.62 177.15 3 A ARG 19 -143.95 -39.38 3 A LYS 34 52.15 88.99 3 B PRO 17 -77.21 -157.82 3 B ARG 18 -49.60 177.26 3 B ARG 19 -144.05 -39.30 3 B LYS 34 52.12 88.95 4 A LYS 15 -102.23 74.55 4 A PRO 17 -77.08 -159.13 4 A ARG 18 -47.91 171.80 4 A ARG 19 -139.06 -43.22 4 A LYS 34 54.12 74.83 4 B LYS 15 -102.51 74.61 4 B PRO 17 -77.07 -159.08 4 B ARG 18 -47.82 171.74 4 B ARG 19 -139.11 -43.25 4 B LYS 34 54.42 74.63 5 A LYS 15 -102.56 76.44 5 A PRO 17 -77.19 -158.21 5 A ARG 18 -48.82 174.24 5 A ARG 19 -139.43 -40.04 5 B LYS 15 -102.52 76.44 5 B PRO 17 -77.24 -158.16 5 B ARG 18 -48.88 174.20 5 B ARG 19 -139.41 -40.09 6 A LYS 15 -103.35 61.82 6 A PRO 17 -74.40 -90.47 6 A LYS 34 55.11 87.58 6 B LYS 15 -103.26 62.01 6 B PRO 17 -74.36 -90.43 6 B LYS 34 55.08 87.45 7 A PRO 17 -76.49 -159.36 7 A ARG 18 -49.38 175.24 7 A ARG 19 -140.22 -40.09 7 B PRO 17 -76.45 -159.15 7 B ARG 18 -49.57 175.29 7 B ARG 19 -140.28 -40.13 8 A GLU 2 -152.66 19.24 8 A PRO 17 -76.95 -157.64 8 A ARG 18 -48.43 174.09 8 A ARG 19 -140.78 -40.94 8 A LYS 34 52.27 179.28 8 B GLU 2 -152.78 19.62 8 B PRO 17 -77.00 -157.69 8 B ARG 18 -48.55 174.16 8 B ARG 19 -140.81 -40.84 8 B LYS 34 52.49 179.20 9 A PRO 17 -77.79 -160.72 9 A ARG 18 -48.42 170.04 9 A ARG 19 -137.08 -39.90 9 B PRO 17 -77.83 -160.72 9 B ARG 18 -48.34 170.10 9 B ARG 19 -137.20 -39.70 10 A GLU 2 -99.93 -68.51 10 A LYS 15 -102.43 71.92 10 A PRO 17 -77.26 -159.83 10 A ARG 18 -47.74 170.56 10 A ARG 19 -137.69 -38.63 10 B GLU 2 -100.00 -68.49 10 B LYS 15 -102.32 71.71 10 B PRO 17 -77.20 -159.81 10 B ARG 18 -47.69 170.68 10 B ARG 19 -137.77 -38.68 11 A LYS 15 -104.13 70.43 11 A PRO 17 -77.51 -158.06 11 A ARG 18 -47.99 171.64 11 A ARG 19 -139.05 -50.63 11 B LYS 15 -104.10 70.40 11 B PRO 17 -77.51 -158.08 11 B ARG 18 -47.98 171.77 11 B ARG 19 -139.24 -50.52 12 A GLU 2 -136.94 -66.57 12 A VAL 3 -170.57 -37.45 12 A PRO 17 -79.12 -158.90 12 A ARG 18 -50.33 -178.04 12 A ARG 19 -151.94 -52.89 12 B GLU 2 -137.03 -66.86 12 B VAL 3 -170.57 -36.90 12 B PRO 17 -79.12 -158.99 12 B ARG 18 -50.23 -177.95 12 B ARG 19 -152.03 -52.69 13 A GLU 2 56.21 17.13 13 A LYS 15 -103.00 73.54 13 A PRO 17 -77.68 -158.83 13 A ARG 18 -49.22 175.57 13 A ARG 19 -139.58 -38.32 13 B GLU 2 56.20 17.29 13 B LYS 15 -102.92 73.71 13 B PRO 17 -77.63 -158.86 13 B ARG 18 -49.27 175.39 13 B ARG 19 -139.32 -38.44 14 A LYS 15 -104.48 79.45 14 A PRO 17 -78.35 -158.51 14 A ARG 18 -48.94 173.53 14 A ARG 19 -140.62 -41.06 14 B LYS 15 -104.55 79.49 14 B PRO 17 -78.17 -158.60 14 B ARG 18 -48.91 173.52 14 B ARG 19 -140.67 -40.94 15 A PRO 17 -76.78 -159.10 15 A ARG 18 -48.28 172.40 15 A ARG 19 -140.78 -41.12 15 A LYS 34 51.44 82.62 15 B PRO 17 -76.80 -158.96 15 B ARG 18 -48.38 172.50 15 B ARG 19 -140.86 -41.10 15 B LYS 34 51.57 82.64 16 A GLU 2 53.51 85.47 16 A VAL 3 37.81 36.02 16 A PRO 17 -77.94 -158.01 16 A ARG 18 -49.61 175.79 16 A ARG 19 -141.44 -45.01 16 A LYS 34 53.22 -179.62 16 B GLU 2 53.38 85.65 16 B VAL 3 37.59 36.22 16 B PRO 17 -77.88 -158.10 16 B ARG 18 -49.67 175.75 16 B ARG 19 -141.42 -44.92 16 B LYS 34 53.22 -179.67 SOLUTION STRUCTURE OF ALPHA2D 1 N N 1 N N A VAL 3 A VAL 3 HELX_P A LYS 15 A LYS 15 1 1 13 A ARG 19 A ARG 19 HELX_P A LYS 34 A LYS 34 1 2 16 B VAL 3 B VAL 3 HELX_P B LYS 15 B LYS 15 1 3 13 B ARG 19 B ARG 19 HELX_P B LYS 34 B LYS 34 1 4 16 DE NOVO PROTEIN DE NOVO DESIGN, PROTEIN DESIGN, PROTEIN FOLDING, BISECTING U MOTIF, FOUR-HELIX BUNDLE, HELIX-TURN-HELIX, DE NOVO PROTEIN 1QP6 PDB 1 1QP6 1 35 1QP6 1 35 1QP6 A 1 1 35 1 35 1QP6 1 35 1QP6 B 1 1 35 1 P 1