HEADER HYDROLASE/DNA 31-DEC-69 7K31 TITLE Crystal structure of Endonuclease Q complex with 27-mer duplex TITLE 2 substrate with dI at the active site COMPND MOL_ID: 1; COMPND 2 MOLECULE: Endonuclease Q; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.88 ANGSTORMS DBREF 7K31 A 1 395 UNP I6V2I0 I6V2I0_9EUR 1 395 SEQRES 1 A 31 THR ALA CYS SER ARG CYS TYR THR LYS TYR THR LEU GLN SEQRES 2 A 31 ASP ALA VAL SER LEU SER TRP LYS CYS PRO LYS CYS GLY SEQRES 3 A 31 GLY ILE ILE LYS LYS ATOM 1 N THR A 247 51.507 26.865 -27.817 1.00 40.22 ATOM 2 CA THR A 247 51.502 26.172 -29.095 1.00 41.03 ATOM 3 C THR A 247 52.010 24.750 -28.900 1.00 50.10 ATOM 4 O THR A 247 53.072 24.537 -28.306 1.00 59.28 ATOM 5 CB THR A 247 52.393 26.917 -30.081 1.00 41.74 ATOM 6 OG1 THR A 247 51.927 28.263 -30.220 1.00 56.71 ATOM 7 CG2 THR A 247 52.370 26.231 -31.438 1.00 57.92 ATOM 8 N ALA A 248 51.249 23.778 -29.390 1.00 41.98 ATOM 9 CA ALA A 248 51.611 22.377 -29.229 1.00 42.73 ATOM 10 C ALA A 248 50.950 21.571 -30.338 1.00 43.19 ATOM 11 O ALA A 248 50.185 22.101 -31.148 1.00 42.88 ATOM 12 CB ALA A 248 51.230 21.860 -27.839 1.00 44.29 ATOM 13 N CYS A 249 51.251 20.277 -30.362 1.00 57.38 ATOM 14 CA CYS A 249 50.723 19.384 -31.381 1.00 62.39 ATOM 15 C CYS A 249 49.327 18.907 -31.000 1.00 49.48 ATOM 16 O CYS A 249 49.010 18.728 -29.821 1.00 49.54 ATOM 17 CB CYS A 249 51.653 18.182 -31.552 1.00 76.63 ATOM 18 SG CYS A 249 51.110 16.959 -32.763 1.00105.02 ATOM 19 N SER A 250 48.487 18.706 -32.015 1.00 43.89 ATOM 20 CA SER A 250 47.119 18.256 -31.787 1.00 43.24 ATOM 21 C SER A 250 47.013 16.755 -31.566 1.00 43.83 ATOM 22 O SER A 250 45.920 16.266 -31.264 1.00 55.85 ATOM 23 CB SER A 250 46.215 18.660 -32.955 1.00 72.29 ATOM 24 OG SER A 250 46.143 20.070 -33.083 1.00 86.67 ATOM 25 N ARG A 251 48.112 16.017 -31.712 1.00 51.68 ATOM 26 CA ARG A 251 48.091 14.565 -31.580 1.00 58.18 ATOM 27 C ARG A 251 48.922 14.084 -30.398 1.00 71.59 ATOM 28 O ARG A 251 48.393 13.386 -29.526 1.00 78.87 ATOM 29 CB ARG A 251 48.545 13.923 -32.898 1.00 62.35 ATOM 30 CG ARG A 251 48.533 12.408 -32.914 1.00 73.59 ATOM 31 CD ARG A 251 48.870 11.893 -34.301 1.00 79.61 ATOM 32 NE ARG A 251 47.851 12.269 -35.277 1.00 81.15 ATOM 33 CZ ARG A 251 48.003 12.170 -36.594 1.00 81.07 ATOM 34 NH1 ARG A 251 49.140 11.713 -37.099 1.00 71.51 ATOM 35 NH2 ARG A 251 47.020 12.534 -37.406 1.00 82.61 ATOM 36 N CYS A 252 50.204 14.447 -30.331 1.00 67.87 ATOM 37 CA CYS A 252 51.064 14.033 -29.229 1.00 63.16 ATOM 38 C CYS A 252 51.150 15.068 -28.114 1.00 58.31 ATOM 39 O CYS A 252 51.662 14.748 -27.035 1.00 45.73 ATOM 40 CB CYS A 252 52.474 13.704 -29.739 1.00 55.77 ATOM 41 SG CYS A 252 53.455 15.144 -30.231 1.00 70.11 ATOM 42 N TYR A 253 50.674 16.292 -28.355 1.00 68.34 ATOM 43 CA TYR A 253 50.604 17.341 -27.334 1.00 60.86 ATOM 44 C TYR A 253 51.987 17.778 -26.853 1.00 53.47 ATOM 45 O TYR A 253 52.188 18.085 -25.677 1.00 62.08 ATOM 46 CB TYR A 253 49.679 16.960 -26.170 1.00 47.47 ATOM 47 CG TYR A 253 48.267 16.620 -26.604 1.00 55.01 ATOM 48 CD1 TYR A 253 47.411 17.606 -27.079 1.00 65.41 ATOM 49 CD2 TYR A 253 47.789 15.316 -26.534 1.00 42.91 ATOM 50 CE1 TYR A 253 46.120 17.305 -27.478 1.00 63.72 ATOM 51 CE2 TYR A 253 46.496 15.004 -26.929 1.00 42.49 ATOM 52 CZ TYR A 253 45.666 16.005 -27.401 1.00 58.81 ATOM 53 OH TYR A 253 44.380 15.711 -27.800 1.00 43.20 ATOM 54 N THR A 254 52.950 17.818 -27.772 1.00 45.15 ATOM 55 CA THR A 254 54.297 18.276 -27.459 1.00 55.09 ATOM 56 C THR A 254 54.387 19.776 -27.709 1.00 45.05 ATOM 57 O THR A 254 54.034 20.252 -28.790 1.00 55.57 ATOM 58 CB THR A 254 55.326 17.542 -28.320 1.00 58.44 ATOM 59 OG1 THR A 254 55.212 16.129 -28.107 1.00 59.97 ATOM 60 CG2 THR A 254 56.739 17.989 -27.961 1.00 59.31 ATOM 61 N LYS A 255 54.870 20.511 -26.712 1.00 44.64 ATOM 62 CA LYS A 255 54.889 21.966 -26.784 1.00 59.28 ATOM 63 C LYS A 255 56.023 22.441 -27.685 1.00 59.41 ATOM 64 O LYS A 255 57.160 21.972 -27.571 1.00 82.40 ATOM 65 CB LYS A 255 55.045 22.556 -25.382 1.00 57.54 ATOM 66 CG LYS A 255 53.942 22.149 -24.411 1.00 64.05 ATOM 67 CD LYS A 255 54.095 22.839 -23.060 1.00 74.93 ATOM 68 CE LYS A 255 55.418 22.491 -22.391 1.00 72.70 ATOM 69 NZ LYS A 255 55.569 23.171 -21.069 1.00 56.88 ATOM 70 N TYR A 256 55.708 23.372 -28.585 1.00 52.91 ATOM 71 CA TYR A 256 56.689 24.002 -29.457 1.00 45.34 ATOM 72 C TYR A 256 56.575 25.513 -29.327 1.00 44.59 ATOM 73 O TYR A 256 55.493 26.051 -29.076 1.00 63.86 ATOM 74 CB TYR A 256 56.466 23.637 -30.936 1.00 46.00 ATOM 75 CG TYR A 256 56.559 22.161 -31.255 1.00 51.65 ATOM 76 CD1 TYR A 256 57.785 21.556 -31.503 1.00 51.92 ATOM 77 CD2 TYR A 256 55.415 21.377 -31.328 1.00 60.98 ATOM 78 CE1 TYR A 256 57.870 20.205 -31.802 1.00 60.38 ATOM 79 CE2 TYR A 256 55.489 20.029 -31.626 1.00 74.61 ATOM 80 CZ TYR A 256 56.716 19.448 -31.862 1.00 68.80 ATOM 81 OH TYR A 256 56.783 18.105 -32.157 1.00 55.52 ATOM 82 N THR A 257 57.701 26.199 -29.502 1.00 50.21 ATOM 83 CA THR A 257 57.678 27.651 -29.543 1.00 47.78 ATOM 84 C THR A 257 57.094 28.121 -30.874 1.00 55.73 ATOM 85 O THR A 257 56.921 27.344 -31.818 1.00 64.19 ATOM 86 CB THR A 257 59.087 28.217 -29.361 1.00 49.44 ATOM 87 OG1 THR A 257 59.913 27.820 -30.463 1.00 56.29 ATOM 88 CG2 THR A 257 59.703 27.710 -28.067 1.00 48.52 ATOM 89 N LEU A 258 56.780 29.416 -30.945 1.00 44.02 ATOM 90 CA LEU A 258 56.286 29.973 -32.200 1.00 49.99 ATOM 91 C LEU A 258 57.373 29.963 -33.268 1.00 63.97 ATOM 92 O LEU A 258 57.096 29.701 -34.446 1.00 58.02 ATOM 93 CB LEU A 258 55.743 31.385 -31.977 1.00 68.64 ATOM 94 CG LEU A 258 55.150 32.095 -33.197 1.00 43.28 ATOM 95 CD1 LEU A 258 54.094 31.228 -33.862 1.00 43.24 ATOM 96 CD2 LEU A 258 54.567 33.443 -32.801 1.00 42.33 ATOM 97 N GLN A 259 58.619 30.232 -32.868 1.00 62.03 ATOM 98 CA GLN A 259 59.737 30.162 -33.804 1.00 62.03 ATOM 99 C GLN A 259 59.889 28.754 -34.364 1.00 50.10 ATOM 100 O GLN A 259 59.958 28.561 -35.584 1.00 49.29 ATOM 101 CB GLN A 259 61.023 30.601 -33.104 1.00 77.97 ATOM 102 CG GLN A 259 60.863 31.838 -32.236 1.00 90.17 ATOM 103 CD GLN A 259 60.390 33.041 -33.025 1.00104.02 ATOM 104 OE1 GLN A 259 59.508 33.779 -32.584 1.00112.97 ATOM 105 NE2 GLN A 259 60.981 33.250 -34.196 1.00103.92 ATOM 106 N ASP A 260 59.946 27.754 -33.478 1.00 48.01 ATOM 107 CA ASP A 260 60.030 26.368 -33.927 1.00 55.74 ATOM 108 C ASP A 260 58.799 25.964 -34.725 1.00 62.66 ATOM 109 O ASP A 260 58.898 25.138 -35.638 1.00 66.36 ATOM 110 CB ASP A 260 60.219 25.433 -32.732 1.00 55.48 ATOM 111 CG ASP A 260 61.544 25.648 -32.026 1.00 75.01 ATOM 112 OD1 ASP A 260 62.555 25.902 -32.715 1.00 79.63 ATOM 113 OD2 ASP A 260 61.570 25.566 -30.779 1.00 80.00 ATOM 114 N ALA A 261 57.638 26.543 -34.410 1.00 57.01 ATOM 115 CA ALA A 261 56.426 26.234 -35.160 1.00 58.02 ATOM 116 C ALA A 261 56.538 26.706 -36.604 1.00 60.84 ATOM 117 O ALA A 261 56.276 25.944 -37.544 1.00 64.89 ATOM 118 CB ALA A 261 55.218 26.871 -34.478 1.00 63.02 ATOM 119 N VAL A 262 56.931 27.966 -36.803 1.00 62.08 ATOM 120 CA VAL A 262 57.081 28.476 -38.164 1.00 64.03 ATOM 121 C VAL A 262 58.233 27.782 -38.886 1.00 62.55 ATOM 122 O VAL A 262 58.187 27.601 -40.110 1.00 50.66 ATOM 123 CB VAL A 262 57.204 30.013 -38.165 1.00 61.56 ATOM 124 CG1 VAL A 262 57.180 30.557 -39.587 1.00 61.84 ATOM 125 CG2 VAL A 262 56.084 30.631 -37.344 1.00 46.65 ATOM 126 N SER A 263 59.269 27.364 -38.154 1.00 54.58 ATOM 127 CA SER A 263 60.361 26.624 -38.781 1.00 68.94 ATOM 128 C SER A 263 59.890 25.261 -39.275 1.00 86.15 ATOM 129 O SER A 263 60.178 24.868 -40.412 1.00 94.85 ATOM 130 CB SER A 263 61.528 26.479 -37.804 1.00 73.21 ATOM 131 OG SER A 263 62.623 25.814 -38.413 1.00 76.98 ATOM 132 N LEU A 264 59.160 24.523 -38.433 1.00 51.34 ATOM 133 CA LEU A 264 58.600 23.237 -38.823 1.00 51.72 ATOM 134 C LEU A 264 57.412 23.373 -39.764 1.00 51.48 ATOM 135 O LEU A 264 56.898 22.351 -40.229 1.00 57.89 ATOM 136 CB LEU A 264 58.173 22.445 -37.584 1.00 71.88 ATOM 137 CG LEU A 264 59.200 21.546 -36.885 1.00 73.63 ATOM 138 CD1 LEU A 264 59.770 20.524 -37.862 1.00 86.93 ATOM 139 CD2 LEU A 264 60.314 22.356 -36.235 1.00 64.75 ATOM 140 N SER A 265 56.959 24.599 -40.043 1.00 50.91 ATOM 141 CA SER A 265 55.802 24.841 -40.907 1.00 74.14 ATOM 142 C SER A 265 54.544 24.156 -40.381 1.00 73.59 ATOM 143 O SER A 265 53.711 23.680 -41.156 1.00 65.90 ATOM 144 CB SER A 265 56.073 24.483 -42.373 1.00 80.86 ATOM 145 OG SER A 265 56.263 23.090 -42.543 1.00 88.65 ATOM 146 N TRP A 266 54.418 24.098 -39.052 1.00 65.36 ATOM 147 CA TRP A 266 53.256 23.515 -38.380 1.00 58.38 ATOM 148 C TRP A 266 53.121 22.018 -38.660 1.00 73.24 ATOM 149 O TRP A 266 52.024 21.507 -38.898 1.00 82.55 ATOM 150 CB TRP A 266 51.964 24.278 -38.691 1.00 50.76 ATOM 151 CG TRP A 266 52.126 25.767 -38.593 1.00 54.60 ATOM 152 CD1 TRP A 266 52.368 26.633 -39.619 1.00 66.89 ATOM 153 CD2 TRP A 266 52.065 26.562 -37.402 1.00 53.70 ATOM 154 NE1 TRP A 266 52.457 27.918 -39.141 1.00 73.15 ATOM 155 CE2 TRP A 266 52.276 27.902 -37.784 1.00 61.28 ATOM 156 CE3 TRP A 266 51.852 26.272 -36.050 1.00 46.48 ATOM 157 CZ2 TRP A 266 52.279 28.949 -36.864 1.00 52.35 ATOM 158 CZ3 TRP A 266 51.855 27.312 -35.140 1.00 43.88 ATOM 159 CH2 TRP A 266 52.070 28.633 -35.550 1.00 43.80 ATOM 160 N LYS A 267 54.249 21.307 -38.620 1.00 77.00 ATOM 161 CA LYS A 267 54.287 19.856 -38.780 1.00 80.15 ATOM 162 C LYS A 267 55.093 19.287 -37.620 1.00 79.15 ATOM 163 O LYS A 267 56.296 19.547 -37.513 1.00 82.97 ATOM 164 CB LYS A 267 54.929 19.468 -40.115 1.00 89.72 ATOM 165 CG LYS A 267 54.441 20.267 -41.319 1.00111.00 ATOM 166 CD LYS A 267 52.963 20.034 -41.596 1.00123.78 ATOM 167 CE LYS A 267 52.478 20.892 -42.758 1.00124.42 ATOM 168 NZ LYS A 267 51.023 20.708 -43.022 1.00123.83 ATOM 169 N CYS A 268 54.439 18.519 -36.755 1.00 77.74 ATOM 170 CA CYS A 268 55.119 17.935 -35.600 1.00 77.55 ATOM 171 C CYS A 268 56.105 16.874 -36.070 1.00 70.91 ATOM 172 O CYS A 268 55.678 15.848 -36.618 1.00 61.43 ATOM 173 CB CYS A 268 54.098 17.316 -34.649 1.00 78.38 ATOM 174 SG CYS A 268 54.808 16.579 -33.147 1.00 61.37 ATOM 175 N PRO A 269 57.417 17.065 -35.877 1.00 73.79 ATOM 176 CA PRO A 269 58.396 16.115 -36.426 1.00 79.38 ATOM 177 C PRO A 269 58.279 14.705 -35.866 1.00 82.50 ATOM 178 O PRO A 269 58.099 13.747 -36.625 1.00 87.80 ATOM 179 CB PRO A 269 59.747 16.752 -36.068 1.00 67.66 ATOM 180 CG PRO A 269 59.453 17.656 -34.919 1.00 59.31 ATOM 181 CD PRO A 269 58.064 18.176 -35.159 1.00 64.04 ATOM 182 N LYS A 270 58.366 14.561 -34.546 1.00 74.89 ATOM 183 CA LYS A 270 58.328 13.243 -33.923 1.00 83.87 ATOM 184 C LYS A 270 56.913 12.719 -33.717 1.00 71.70 ATOM 185 O LYS A 270 56.732 11.729 -33.000 1.00 65.27 ATOM 186 CB LYS A 270 59.101 13.238 -32.599 1.00 96.55 ATOM 187 CG LYS A 270 58.609 14.238 -31.564 1.00 89.14 ATOM 188 CD LYS A 270 59.412 15.530 -31.617 1.00 90.88 ATOM 189 CE LYS A 270 59.032 16.464 -30.480 1.00 90.21 ATOM 190 NZ LYS A 270 59.224 15.823 -29.149 1.00 85.34 ATOM 191 N CYS A 271 55.923 13.348 -34.316 1.00 76.01 ATOM 192 CA CYS A 271 54.544 12.895 -34.201 1.00 87.03 ATOM 193 C CYS A 271 53.858 12.732 -35.549 1.00 92.86 ATOM 194 O CYS A 271 53.096 11.778 -35.733 1.00 52.15 ATOM 195 CB CYS A 271 53.753 13.879 -33.322 1.00101.58 ATOM 196 SG CYS A 271 51.977 13.575 -33.266 1.00 96.05 ATOM 197 N GLY A 272 54.125 13.624 -36.499 1.00 85.61 ATOM 198 CA GLY A 272 53.404 13.616 -37.754 1.00 91.05 ATOM 199 C GLY A 272 52.032 14.242 -37.688 1.00 80.16 ATOM 200 O GLY A 272 51.200 13.981 -38.561 1.00 86.61 ATOM 201 N GLY A 273 51.766 15.064 -36.671 1.00 62.91 ATOM 202 CA GLY A 273 50.473 15.677 -36.482 1.00 76.09 ATOM 203 C GLY A 273 50.515 17.186 -36.679 1.00 74.51 ATOM 204 O GLY A 273 51.572 17.811 -36.747 1.00 68.78 ATOM 205 N ILE A 274 49.321 17.765 -36.773 1.00 61.42 ATOM 206 CA ILE A 274 49.178 19.204 -36.957 1.00 46.71 ATOM 207 C ILE A 274 49.395 19.883 -35.611 1.00 56.15 ATOM 208 O ILE A 274 48.723 19.562 -34.627 1.00 44.97 ATOM 209 CB ILE A 274 47.796 19.551 -37.527 1.00 61.61 ATOM 210 CG1 ILE A 274 47.508 18.728 -38.785 1.00 62.32 ATOM 211 CG2 ILE A 274 47.704 21.039 -37.831 1.00 51.13 ATOM 212 CD1 ILE A 274 46.114 18.941 -39.345 1.00 54.24 ATOM 213 N ILE A 275 50.341 20.813 -35.561 1.00 65.97 ATOM 214 CA ILE A 275 50.583 21.604 -34.360 1.00 54.53 ATOM 215 C ILE A 275 49.811 22.910 -34.478 1.00 47.97 ATOM 216 O ILE A 275 49.821 23.557 -35.534 1.00 44.36 ATOM 217 CB ILE A 275 52.091 21.835 -34.139 1.00 61.13 ATOM 218 CG1 ILE A 275 52.386 23.299 -33.797 1.00 66.40 ATOM 219 CG2 ILE A 275 52.898 21.369 -35.342 1.00 46.95 ATOM 220 CD1 ILE A 275 53.861 23.601 -33.654 1.00 75.29 ATOM 221 N LYS A 276 49.120 23.284 -33.406 1.00 57.76 ATOM 222 CA LYS A 276 48.206 24.416 -33.415 1.00 56.23 ATOM 223 C LYS A 276 48.718 25.539 -32.523 1.00 54.14 ATOM 224 O LYS A 276 49.249 25.295 -31.435 1.00 41.16 ATOM 225 CB LYS A 276 46.800 23.987 -32.991 1.00 41.13 ATOM 226 CG LYS A 276 46.026 23.317 -34.112 1.00 41.60 ATOM 227 CD LYS A 276 46.096 24.164 -35.381 1.00 58.07 ATOM 228 CE LYS A 276 45.349 23.523 -36.537 1.00 67.02 ATOM 229 NZ LYS A 276 45.611 24.225 -37.824 1.00 72.83 ATOM 230 N LYS A 277 48.535 26.770 -32.994 1.00 41.01 ATOM 231 CA LYS A 277 49.107 27.937 -32.336 1.00 40.57 ATOM 232 C LYS A 277 48.370 28.238 -31.036 1.00 52.82 ATOM 233 O LYS A 277 47.137 28.301 -31.007 1.00 51.43 ATOM 234 CB LYS A 277 49.027 29.131 -33.285 1.00 40.63 ATOM 235 CG LYS A 277 49.525 30.445 -32.718 1.00 40.18 ATOM 236 CD LYS A 277 49.851 31.423 -33.837 1.00 40.69 ATOM 237 CE LYS A 277 48.718 31.520 -34.848 1.00 50.85 ATOM 238 NZ LYS A 277 49.075 32.376 -36.014 1.00 41.28 ATOM 239 ZN ZN A 402 52.892 15.494 -32.384 1.00 82.21 TER