HEADER SIGNALING PROTEIN 17-DEC-14 4XBM TITLE X-ray crystal structure of Notch ligand Delta-like 1 COMPND MOL_ID: 1; COMPND 2 MOLECULE: Delta-like protein 1; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 3.20 ANGSTORMS DBREF 4XBM A 21 545 UNP O00548 DLL1_HUMAN 21 545 SEQRES 1 A 35 CYS ILE ARG TYR PRO GLY CYS LEU HIS GLY THR CYS GLN SEQRES 2 A 35 GLN PRO TRP GLN CYS ASN CYS GLN GLU GLY TRP GLY GLY SEQRES 3 A 35 LEU PHE CYS ASN GLN ASP LEU ASN TYR ATOM 1 N CYS A 257 8.270 20.375 83.114 1.00 97.85 ATOM 2 CA CYS A 257 9.729 20.394 83.079 1.00 86.24 ATOM 3 C CYS A 257 10.342 19.732 84.307 1.00 85.75 ATOM 4 O CYS A 257 9.650 19.437 85.283 1.00 87.05 ATOM 5 CB CYS A 257 10.238 21.833 82.953 1.00 84.77 ATOM 6 SG CYS A 257 9.424 23.010 84.059 1.00128.54 ATOM 7 N ILE A 258 11.650 19.497 84.249 1.00 90.18 ATOM 8 CA ILE A 258 12.378 18.939 85.380 1.00 90.70 ATOM 9 C ILE A 258 13.230 20.018 86.035 1.00 94.73 ATOM 10 O ILE A 258 14.060 20.648 85.379 1.00 94.30 ATOM 11 CB ILE A 258 13.281 17.765 84.956 1.00 80.01 ATOM 12 CG1 ILE A 258 12.454 16.678 84.266 1.00 75.61 ATOM 13 CG2 ILE A 258 14.015 17.197 86.161 1.00 81.40 ATOM 14 CD1 ILE A 258 13.274 15.501 83.786 1.00 85.67 ATOM 15 N ARG A 259 13.017 20.236 87.328 1.00 89.81 ATOM 16 CA ARG A 259 13.796 21.218 88.068 1.00100.47 ATOM 17 C ARG A 259 15.247 20.771 88.195 1.00100.10 ATOM 18 O ARG A 259 15.565 19.602 87.974 1.00 97.52 ATOM 19 CB ARG A 259 13.202 21.448 89.459 1.00 98.47 ATOM 20 CG ARG A 259 11.744 21.872 89.464 1.00 93.22 ATOM 21 CD ARG A 259 11.234 22.054 90.886 1.00 95.62 ATOM 22 NE ARG A 259 11.409 20.846 91.687 1.00 86.74 ATOM 23 CZ ARG A 259 11.152 20.767 92.989 1.00 99.47 ATOM 24 NH1 ARG A 259 10.708 21.830 93.647 1.00108.07 ATOM 25 NH2 ARG A 259 11.343 19.624 93.635 1.00 95.83 ATOM 26 N TYR A 260 16.120 21.708 88.550 1.00 87.02 ATOM 27 CA TYR A 260 17.515 21.390 88.830 1.00 89.48 ATOM 28 C TYR A 260 17.579 20.379 89.971 1.00 86.82 ATOM 29 O TYR A 260 16.866 20.521 90.960 1.00 87.89 ATOM 30 CB TYR A 260 18.291 22.663 89.187 1.00 84.79 ATOM 31 CG TYR A 260 19.794 22.492 89.234 1.00 81.15 ATOM 32 CD1 TYR A 260 20.427 22.025 90.378 1.00 90.65 ATOM 33 CD2 TYR A 260 20.581 22.811 88.134 1.00 79.53 ATOM 34 CE1 TYR A 260 21.801 21.871 90.424 1.00103.20 ATOM 35 CE2 TYR A 260 21.954 22.661 88.171 1.00 88.93 ATOM 36 CZ TYR A 260 22.559 22.192 89.317 1.00108.12 ATOM 37 OH TYR A 260 23.928 22.041 89.357 1.00109.59 ATOM 38 N PRO A 261 18.416 19.342 89.828 1.00 80.34 ATOM 39 CA PRO A 261 18.537 18.291 90.847 1.00 85.01 ATOM 40 C PRO A 261 18.865 18.846 92.231 1.00 92.33 ATOM 41 O PRO A 261 19.907 19.475 92.413 1.00101.05 ATOM 42 CB PRO A 261 19.683 17.427 90.317 1.00 85.38 ATOM 43 CG PRO A 261 19.642 17.630 88.844 1.00 78.40 ATOM 44 CD PRO A 261 19.252 19.063 88.649 1.00 79.12 ATOM 45 N GLY A 262 17.970 18.618 93.188 1.00 89.51 ATOM 46 CA GLY A 262 18.151 19.107 94.542 1.00 93.09 ATOM 47 C GLY A 262 17.318 20.338 94.850 1.00108.76 ATOM 48 O GLY A 262 17.381 20.879 95.954 1.00115.74 ATOM 49 N CYS A 263 16.536 20.783 93.870 1.00107.99 ATOM 50 CA CYS A 263 15.680 21.955 94.032 1.00103.05 ATOM 51 C CYS A 263 14.539 21.649 94.999 1.00110.42 ATOM 52 O CYS A 263 13.757 20.724 94.776 1.00101.16 ATOM 53 CB CYS A 263 15.129 22.403 92.675 1.00 89.96 ATOM 54 SG CYS A 263 14.282 24.004 92.627 1.00120.52 ATOM 55 N LEU A 264 14.453 22.423 96.076 1.00127.96 ATOM 56 CA LEU A 264 13.427 22.211 97.091 1.00127.30 ATOM 57 C LEU A 264 12.163 23.013 96.810 1.00125.51 ATOM 58 O LEU A 264 11.192 22.489 96.263 1.00128.45 ATOM 59 CB LEU A 264 13.964 22.565 98.479 1.00128.24 ATOM 60 CG LEU A 264 14.501 21.398 99.309 1.00137.38 ATOM 61 CD1 LEU A 264 15.015 21.887 100.654 1.00139.71 ATOM 62 CD2 LEU A 264 13.428 20.336 99.498 1.00123.76 ATOM 63 N HIS A 265 12.179 24.285 97.192 1.00130.07 ATOM 64 CA HIS A 265 11.012 25.144 97.026 1.00123.67 ATOM 65 C HIS A 265 11.194 26.115 95.867 1.00120.58 ATOM 66 O HIS A 265 11.767 27.194 96.022 1.00114.82 ATOM 67 CB HIS A 265 10.724 25.902 98.321 1.00126.83 ATOM 68 CG HIS A 265 10.483 25.009 99.497 1.00133.70 ATOM 69 ND1 HIS A 265 9.345 24.243 99.626 1.00128.21 ATOM 70 CD2 HIS A 265 11.238 24.751 100.590 1.00134.26 ATOM 71 CE1 HIS A 265 9.407 23.554 100.752 1.00129.21 ATOM 72 NE2 HIS A 265 10.545 23.844 101.356 1.00128.07 ATOM 73 N GLY A 266 10.694 25.714 94.706 1.00121.41 ATOM 74 CA GLY A 266 10.796 26.509 93.499 1.00117.05 ATOM 75 C GLY A 266 10.257 25.732 92.317 1.00102.21 ATOM 76 O GLY A 266 9.895 24.564 92.454 1.00101.40 ATOM 77 N THR A 267 10.201 26.370 91.154 1.00 98.41 ATOM 78 CA THR A 267 9.670 25.710 89.968 1.00103.34 ATOM 79 C THR A 267 10.392 26.125 88.692 1.00102.11 ATOM 80 O THR A 267 10.953 27.217 88.603 1.00 98.18 ATOM 81 CB THR A 267 8.170 25.996 89.792 1.00119.65 ATOM 82 OG1 THR A 267 7.708 25.387 88.580 1.00130.38 ATOM 83 CG2 THR A 267 7.917 27.493 89.728 1.00115.02 ATOM 84 N CYS A 268 10.362 25.236 87.706 1.00101.28 ATOM 85 CA CYS A 268 11.003 25.475 86.420 1.00 97.41 ATOM 86 C CYS A 268 10.032 26.077 85.411 1.00 94.73 ATOM 87 O CYS A 268 8.834 25.798 85.439 1.00107.75 ATOM 88 CB CYS A 268 11.582 24.171 85.863 1.00100.04 ATOM 89 SG CYS A 268 10.405 22.792 85.830 1.00129.69 ATOM 90 N GLN A 269 10.561 26.915 84.528 1.00 84.40 ATOM 91 CA GLN A 269 9.813 27.385 83.372 1.00 92.80 ATOM 92 C GLN A 269 10.277 26.569 82.175 1.00 86.72 ATOM 93 O GLN A 269 9.489 25.895 81.513 1.00 84.60 ATOM 94 CB GLN A 269 10.033 28.880 83.144 1.00106.38 ATOM 95 CG GLN A 269 9.866 29.720 84.401 1.00115.06 ATOM 96 CD GLN A 269 8.492 29.567 85.025 1.00115.90 ATOM 97 OE1 GLN A 269 7.484 29.500 84.322 1.00110.00 ATOM 98 NE2 GLN A 269 8.446 29.505 86.352 1.00101.30 ATOM 99 N GLN A 270 11.576 26.640 81.913 1.00 93.28 ATOM 100 CA GLN A 270 12.236 25.734 80.987 1.00 94.10 ATOM 101 C GLN A 270 13.001 24.704 81.821 1.00 89.31 ATOM 102 O GLN A 270 13.277 24.954 82.994 1.00 86.20 ATOM 103 CB GLN A 270 13.156 26.509 80.038 1.00 94.42 ATOM 104 CG GLN A 270 12.420 27.174 78.881 1.00 93.07 ATOM 105 CD GLN A 270 11.910 26.173 77.856 1.00107.33 ATOM 106 OE1 GLN A 270 12.617 25.238 77.483 1.00107.44 ATOM 107 NE2 GLN A 270 10.677 26.367 77.398 1.00115.92 ATOM 108 N PRO A 271 13.320 23.537 81.234 1.00 94.01 ATOM 109 CA PRO A 271 13.962 22.457 81.997 1.00 97.69 ATOM 110 C PRO A 271 15.243 22.868 82.723 1.00 96.95 ATOM 111 O PRO A 271 15.926 23.806 82.302 1.00 84.80 ATOM 112 CB PRO A 271 14.271 21.401 80.924 1.00 92.98 ATOM 113 CG PRO A 271 14.125 22.106 79.611 1.00 92.94 ATOM 114 CD PRO A 271 13.069 23.131 79.842 1.00 92.16 ATOM 115 N TRP A 272 15.530 22.171 83.820 1.00101.69 ATOM 116 CA TRP A 272 16.743 22.349 84.623 1.00 94.86 ATOM 117 C TRP A 272 16.827 23.702 85.328 1.00 86.09 ATOM 118 O TRP A 272 17.818 23.996 85.995 1.00 86.08 ATOM 119 CB TRP A 272 17.987 22.132 83.756 1.00 85.75 ATOM 120 CG TRP A 272 17.890 20.901 82.912 1.00 73.50 ATOM 121 CD1 TRP A 272 17.929 20.836 81.549 1.00 76.79 ATOM 122 CD2 TRP A 272 17.706 19.557 83.373 1.00 71.28 ATOM 123 NE1 TRP A 272 17.796 19.533 81.134 1.00 87.40 ATOM 124 CE2 TRP A 272 17.657 18.730 82.234 1.00 80.16 ATOM 125 CE3 TRP A 272 17.587 18.974 84.638 1.00 76.58 ATOM 126 CZ2 TRP A 272 17.492 17.348 82.324 1.00 86.35 ATOM 127 CZ3 TRP A 272 17.424 17.603 84.724 1.00 80.89 ATOM 128 CH2 TRP A 272 17.378 16.806 83.575 1.00 85.72 ATOM 129 N GLN A 273 15.789 24.519 85.187 1.00 92.31 ATOM 130 CA GLN A 273 15.708 25.770 85.929 1.00 89.11 ATOM 131 C GLN A 273 15.179 25.510 87.336 1.00 92.96 ATOM 132 O GLN A 273 14.321 24.653 87.532 1.00113.47 ATOM 133 CB GLN A 273 14.808 26.779 85.212 1.00 84.64 ATOM 134 CG GLN A 273 15.389 27.347 83.927 1.00100.00 ATOM 135 CD GLN A 273 14.496 28.410 83.308 1.00100.85 ATOM 136 OE1 GLN A 273 13.452 28.757 83.862 1.00 87.94 ATOM 137 NE2 GLN A 273 14.905 28.932 82.157 1.00 97.01 ATOM 138 N CYS A 274 15.696 26.246 88.313 1.00 82.30 ATOM 139 CA CYS A 274 15.192 26.158 89.678 1.00 86.85 ATOM 140 C CYS A 274 15.032 27.557 90.259 1.00103.64 ATOM 141 O CYS A 274 15.978 28.139 90.792 1.00106.16 ATOM 142 CB CYS A 274 16.117 25.304 90.548 1.00 88.40 ATOM 143 SG CYS A 274 15.778 25.352 92.332 1.00120.62 ATOM 144 N ASN A 275 13.819 28.087 90.140 1.00111.89 ATOM 145 CA ASN A 275 13.519 29.450 90.555 1.00101.46 ATOM 146 C ASN A 275 12.797 29.489 91.894 1.00120.31 ATOM 147 O ASN A 275 11.623 29.125 91.986 1.00119.08 ATOM 148 CB ASN A 275 12.688 30.148 89.480 1.00 86.15 ATOM 149 CG ASN A 275 13.308 30.031 88.102 1.00 93.38 ATOM 150 OD1 ASN A 275 14.528 30.100 87.950 1.00 97.78 ATOM 151 ND2 ASN A 275 12.470 29.844 87.088 1.00 99.18 ATOM 152 N CYS A 276 13.509 29.935 92.924 1.00132.49 ATOM 153 CA CYS A 276 12.993 29.953 94.288 1.00129.13 ATOM 154 C CYS A 276 11.713 30.767 94.417 1.00126.58 ATOM 155 O CYS A 276 11.598 31.859 93.862 1.00122.32 ATOM 156 CB CYS A 276 14.047 30.510 95.245 1.00136.70 ATOM 157 SG CYS A 276 15.643 29.682 95.159 1.00154.14 ATOM 158 N GLN A 277 10.752 30.227 95.159 1.00123.28 ATOM 159 CA GLN A 277 9.506 30.931 95.420 1.00132.86 ATOM 160 C GLN A 277 9.640 31.841 96.638 1.00142.30 ATOM 161 O GLN A 277 10.751 32.183 97.049 1.00144.74 ATOM 162 CB GLN A 277 8.361 29.935 95.614 1.00122.96 ATOM 163 CG GLN A 277 8.729 28.712 96.434 1.00124.30 ATOM 164 CD GLN A 277 7.681 27.622 96.343 1.00126.45 ATOM 165 OE1 GLN A 277 7.850 26.533 96.892 1.00131.11 ATOM 166 NE2 GLN A 277 6.589 27.910 95.643 1.00101.61 ATOM 167 N GLU A 278 8.503 32.227 97.208 1.00143.69 ATOM 168 CA GLU A 278 8.461 33.188 98.308 1.00147.10 ATOM 169 C GLU A 278 9.244 32.748 99.543 1.00142.77 ATOM 170 O GLU A 278 8.962 31.702 100.128 1.00137.32 ATOM 171 CB GLU A 278 7.010 33.463 98.708 1.00154.07 ATOM 172 CG GLU A 278 6.865 34.292 99.975 1.00165.27 ATOM 173 CD GLU A 278 5.478 34.202 100.578 1.00167.95 ATOM 174 OE1 GLU A 278 4.644 33.441 100.044 1.00169.28 ATOM 175 OE2 GLU A 278 5.224 34.889 101.589 1.00157.87 ATOM 176 N GLY A 279 10.224 33.559 99.932 1.00137.34 ATOM 177 CA GLY A 279 10.940 33.361 101.179 1.00137.92 ATOM 178 C GLY A 279 12.069 32.349 101.132 1.00138.19 ATOM 179 O GLY A 279 12.393 31.730 102.146 1.00138.89 ATOM 180 N TRP A 280 12.671 32.178 99.961 1.00136.23 ATOM 181 CA TRP A 280 13.778 31.240 99.809 1.00133.23 ATOM 182 C TRP A 280 14.817 31.779 98.830 1.00130.78 ATOM 183 O TRP A 280 14.518 32.642 98.004 1.00122.53 ATOM 184 CB TRP A 280 13.267 29.873 99.341 1.00125.38 ATOM 185 CG TRP A 280 12.276 29.235 100.277 1.00120.36 ATOM 186 CD1 TRP A 280 10.922 29.400 100.272 1.00125.31 ATOM 187 CD2 TRP A 280 12.564 28.327 101.349 1.00121.64 ATOM 188 NE1 TRP A 280 10.348 28.657 101.274 1.00119.68 ATOM 189 CE2 TRP A 280 11.334 27.989 101.949 1.00120.29 ATOM 190 CE3 TRP A 280 13.740 27.771 101.858 1.00136.65 ATOM 191 CZ2 TRP A 280 11.249 27.117 103.033 1.00128.35 ATOM 192 CZ3 TRP A 280 13.652 26.905 102.933 1.00137.77 ATOM 193 CH2 TRP A 280 12.415 26.588 103.510 1.00134.12 ATOM 194 N GLY A 281 16.040 31.268 98.929 1.00130.21 ATOM 195 CA GLY A 281 17.121 31.719 98.070 1.00128.00 ATOM 196 C GLY A 281 18.174 30.656 97.821 1.00135.26 ATOM 197 O GLY A 281 18.130 29.575 98.409 1.00129.75 ATOM 198 N GLY A 282 19.127 30.969 96.948 1.00135.66 ATOM 199 CA GLY A 282 20.187 30.038 96.605 1.00131.07 ATOM 200 C GLY A 282 19.798 29.166 95.431 1.00122.40 ATOM 201 O GLY A 282 18.660 29.212 94.967 1.00126.21 ATOM 202 N LEU A 283 20.741 28.368 94.942 1.00129.69 ATOM 203 CA LEU A 283 20.460 27.471 93.830 1.00132.40 ATOM 204 C LEU A 283 19.501 26.366 94.253 1.00121.58 ATOM 205 O LEU A 283 18.545 26.058 93.544 1.00121.12 ATOM 206 CB LEU A 283 21.748 26.858 93.283 1.00123.64 ATOM 207 CG LEU A 283 21.522 25.854 92.151 1.00107.81 ATOM 208 CD1 LEU A 283 21.032 26.553 90.888 1.00122.65 ATOM 209 CD2 LEU A 283 22.776 25.051 91.871 1.00103.91 ATOM 210 N PHE A 284 19.760 25.775 95.415 1.00118.40 ATOM 211 CA PHE A 284 18.922 24.701 95.940 1.00120.02 ATOM 212 C PHE A 284 17.573 25.204 96.444 1.00126.36 ATOM 213 O PHE A 284 16.649 24.413 96.646 1.00113.10 ATOM 214 CB PHE A 284 19.641 23.973 97.076 1.00131.48 ATOM 215 CG PHE A 284 20.694 23.015 96.612 1.00131.58 ATOM 216 CD1 PHE A 284 20.554 22.336 95.415 1.00110.36 ATOM 217 CD2 PHE A 284 21.826 22.792 97.377 1.00143.41 ATOM 218 CE1 PHE A 284 21.522 21.453 94.989 1.00111.53 ATOM 219 CE2 PHE A 284 22.798 21.909 96.956 1.00146.94 ATOM 220 CZ PHE A 284 22.646 21.239 95.761 1.00138.07 ATOM 221 N CYS A 285 17.476 26.516 96.655 1.00134.58 ATOM 222 CA CYS A 285 16.300 27.146 97.259 1.00132.50 ATOM 223 C CYS A 285 16.023 26.601 98.661 1.00130.66 ATOM 224 O CYS A 285 14.910 26.724 99.172 1.00126.08 ATOM 225 CB CYS A 285 15.061 26.967 96.375 1.00115.71 ATOM 226 SG CYS A 285 15.167 27.750 94.748 1.00126.63 ATOM 227 N ASN A 286 17.039 26.008 99.283 1.00136.35 ATOM 228 CA ASN A 286 16.901 25.461 100.628 1.00130.09 ATOM 229 C ASN A 286 17.200 26.500 101.702 1.00132.96 ATOM 230 O ASN A 286 16.926 26.283 102.882 1.00130.67 ATOM 231 CB ASN A 286 17.815 24.246 100.811 1.00133.03 ATOM 232 CG ASN A 286 19.263 24.539 100.452 1.00139.40 ATOM 233 OD1 ASN A 286 19.633 25.685 100.190 1.00140.43 ATOM 234 ND2 ASN A 286 20.092 23.500 100.439 1.00125.54 ATOM 235 N GLN A 287 17.770 27.627 101.286 1.00128.39 ATOM 236 CA GLN A 287 18.074 28.716 102.206 1.00127.98 ATOM 237 C GLN A 287 16.793 29.391 102.681 1.00133.37 ATOM 238 O GLN A 287 16.057 29.976 101.887 1.00128.48 ATOM 239 CB GLN A 287 19.000 29.741 101.547 1.00124.93 ATOM 240 CG GLN A 287 20.415 29.238 101.304 1.00121.48 ATOM 241 CD GLN A 287 21.327 30.311 100.742 1.00107.17 ATOM 242 OE1 GLN A 287 20.994 30.975 99.761 1.00104.92 ATOM 243 NE2 GLN A 287 22.484 30.492 101.370 1.00116.76 ATOM 244 N ASP A 288 16.532 29.305 103.981 1.00141.13 ATOM 245 CA ASP A 288 15.316 29.866 104.559 1.00142.84 ATOM 246 C ASP A 288 15.571 31.211 105.227 1.00142.01 ATOM 247 O ASP A 288 16.504 31.358 106.016 1.00138.82 ATOM 248 CB ASP A 288 14.710 28.895 105.574 1.00136.85 ATOM 249 CG ASP A 288 13.453 29.441 106.227 1.00132.63 ATOM 250 OD1 ASP A 288 12.678 30.139 105.541 1.00128.99 ATOM 251 OD2 ASP A 288 13.243 29.172 107.429 1.00135.61 ATOM 252 N LEU A 289 14.731 32.190 104.907 1.00142.70 ATOM 253 CA LEU A 289 14.795 33.495 105.550 1.00149.25 ATOM 254 C LEU A 289 13.592 33.690 106.471 1.00147.75 ATOM 255 O LEU A 289 12.679 34.458 106.164 1.00134.07 ATOM 256 CB LEU A 289 14.858 34.612 104.504 1.00140.45 ATOM 257 CG LEU A 289 15.998 34.525 103.484 1.00138.79 ATOM 258 CD1 LEU A 289 16.041 35.769 102.608 1.00134.11 ATOM 259 CD2 LEU A 289 17.335 34.307 104.178 1.00141.73 ATOM 260 N ASN A 290 13.597 32.982 107.596 1.00144.02 ATOM 261 CA ASN A 290 12.523 33.075 108.578 1.00142.04 ATOM 262 C ASN A 290 13.063 32.905 109.992 1.00151.83 ATOM 263 O ASN A 290 12.983 33.818 110.813 1.00148.46 ATOM 264 CB ASN A 290 11.444 32.027 108.299 1.00141.06 ATOM 265 N TYR A 291 13.612 31.727 110.266 1.00150.62 ATOM 266 CA TYR A 291 14.251 31.457 111.546 1.00143.92 ATOM 267 C TYR A 291 15.721 31.098 111.340 1.00131.14 ATOM 268 O TYR A 291 16.199 31.032 110.206 1.00110.30 ATOM 269 CB TYR A 291 13.524 30.334 112.289 1.00119.84 TER