HEADER HYDROLASE/INHIBITOR 29-MAR-12 4AOR TITLE Cationic trypsin in complex with the Spinacia oleracea trypsin TITLE 2 inhibitor III (SOTI-III) COMPND MOL_ID: 2; COMPND 2 MOLECULE: TRYPSIN INHIBITOR 3; COMPND 3 CHAIN: D, E, F; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 1.70 ANGSTORMS DBREF 4AOR D 1 37 UNP P84781 ITR3_SPIOL 1 37 SEQRES 1 D 34 CYS SER PRO SER GLY ALA ILE CYS SER GLY PHE GLY PRO SEQRES 2 D 34 PRO GLU GLN CYS CYS SER GLY ALA CYS VAL PRO HIS PRO SEQRES 3 D 34 ILE LEU ARG ILE PHE VAL CYS GLN ATOM 1 N CYS D 4 -4.700 23.432 41.681 1.00 25.81 ATOM 2 CA CYS D 4 -4.267 22.672 40.498 1.00 20.89 ATOM 3 C CYS D 4 -3.382 23.506 39.581 1.00 18.42 ATOM 4 O CYS D 4 -3.525 24.727 39.492 1.00 21.77 ATOM 5 CB CYS D 4 -5.468 22.132 39.713 1.00 18.35 ATOM 6 SG CYS D 4 -6.495 23.370 38.848 1.00 22.21 ATOM 7 N SER D 5 -2.477 22.836 38.871 1.00 13.59 ATOM 8 CA SER D 5 -1.515 23.536 38.032 1.00 13.98 ATOM 9 C SER D 5 -2.036 23.724 36.603 1.00 12.92 ATOM 10 O SER D 5 -2.603 22.805 36.002 1.00 13.35 ATOM 11 CB SER D 5 -0.175 22.784 38.012 1.00 13.19 ATOM 12 OG SER D 5 0.346 22.534 39.300 1.00 16.92 ATOM 13 N PRO D 6 -1.836 24.925 36.047 1.00 15.38 ATOM 14 CA PRO D 6 -2.251 25.306 34.699 1.00 18.71 ATOM 15 C PRO D 6 -1.516 24.536 33.620 1.00 18.91 ATOM 16 O PRO D 6 -0.485 23.943 33.907 1.00 14.53 ATOM 17 CB PRO D 6 -1.849 26.787 34.622 1.00 24.47 ATOM 18 CG PRO D 6 -0.784 26.940 35.651 1.00 25.20 ATOM 19 CD PRO D 6 -1.180 26.035 36.763 1.00 16.71 ATOM 20 N SER D 7 -2.033 24.574 32.392 1.00 16.89 ATOM 21 CA SER D 7 -1.382 23.927 31.252 1.00 17.32 ATOM 22 C SER D 7 0.042 24.437 31.061 1.00 17.02 ATOM 23 O SER D 7 0.300 25.645 31.120 1.00 16.25 ATOM 24 CB SER D 7 -2.208 24.127 29.986 1.00 21.34 ATOM 25 OG SER D 7 -3.481 23.537 30.197 1.00 29.00 ATOM 26 N GLY D 8 0.971 23.507 30.878 1.00 17.41 ATOM 27 CA GLY D 8 2.364 23.878 30.673 1.00 16.85 ATOM 28 C GLY D 8 3.185 23.883 31.943 1.00 17.11 ATOM 29 O GLY D 8 4.418 23.935 31.882 1.00 15.36 ATOM 30 N ALA D 9 2.525 23.786 33.095 1.00 11.88 ATOM 31 CA ALA D 9 3.251 23.801 34.361 1.00 11.68 ATOM 32 C ALA D 9 4.019 22.497 34.503 1.00 10.84 ATOM 33 O ALA D 9 3.595 21.461 33.998 1.00 10.31 ATOM 34 CB ALA D 9 2.285 23.955 35.555 1.00 10.93 ATOM 35 N ILE D 10 5.114 22.541 35.251 1.00 9.92 ATOM 36 CA ILE D 10 5.802 21.325 35.640 1.00 11.37 ATOM 37 C ILE D 10 4.897 20.468 36.528 1.00 10.38 ATOM 38 O ILE D 10 4.166 20.989 37.388 1.00 12.15 ATOM 39 CB ILE D 10 7.027 21.669 36.501 1.00 7.54 ATOM 40 CG1 ILE D 10 8.008 22.527 35.698 1.00 9.55 ATOM 41 CG2 ILE D 10 7.707 20.391 37.007 1.00 15.02 ATOM 42 CD1 ILE D 10 9.105 23.170 36.597 1.00 10.81 ATOM 43 N CYS D 11 4.965 19.163 36.345 1.00 9.63 ATOM 44 CA CYS D 11 4.288 18.244 37.233 1.00 10.38 ATOM 45 C CYS D 11 5.088 16.963 37.364 1.00 9.56 ATOM 46 O CYS D 11 6.205 16.873 36.847 1.00 8.35 ATOM 47 CB CYS D 11 2.857 17.958 36.746 1.00 8.27 ATOM 48 SG CYS D 11 2.757 17.286 35.071 1.00 11.36 ATOM 49 N SER D 12 4.503 15.984 38.037 1.00 8.60 ATOM 50 CA SER D 12 5.210 14.753 38.402 1.00 9.45 ATOM 51 C SER D 12 4.644 13.525 37.755 1.00 9.89 ATOM 52 O SER D 12 3.456 13.255 37.879 1.00 9.56 ATOM 53 CB SER D 12 5.154 14.523 39.901 1.00 13.21 ATOM 54 OG SER D 12 5.829 13.313 40.259 1.00 12.49 ATOM 55 N GLY D 13 5.509 12.727 37.150 1.00 9.47 ATOM 56 CA GLY D 13 5.096 11.426 36.662 1.00 13.22 ATOM 57 C GLY D 13 4.621 10.472 37.757 1.00 15.22 ATOM 58 O GLY D 13 4.015 9.440 37.437 1.00 15.56 ATOM 59 N PHE D 14 4.898 10.790 39.025 1.00 10.46 ATOM 60 CA PHE D 14 4.489 9.943 40.147 1.00 11.45 ATOM 61 C PHE D 14 3.135 10.335 40.720 1.00 15.19 ATOM 62 O PHE D 14 2.581 9.607 41.545 1.00 15.60 ATOM 63 CB PHE D 14 5.501 10.002 41.306 1.00 11.08 ATOM 64 CG PHE D 14 6.854 9.418 40.984 1.00 15.04 ATOM 65 CD1 PHE D 14 7.864 10.217 40.467 1.00 19.66 ATOM 66 CD2 PHE D 14 7.130 8.082 41.240 1.00 16.35 ATOM 67 CE1 PHE D 14 9.120 9.678 40.180 1.00 16.02 ATOM 68 CE2 PHE D 14 8.365 7.536 40.950 1.00 19.80 ATOM 69 CZ PHE D 14 9.374 8.336 40.419 1.00 17.30 ATOM 70 N GLY D 15 2.636 11.502 40.341 1.00 14.37 ATOM 71 CA GLY D 15 1.475 12.066 41.013 1.00 14.30 ATOM 72 C GLY D 15 0.178 11.773 40.283 1.00 12.27 ATOM 73 O GLY D 15 0.176 11.276 39.165 1.00 14.00 ATOM 74 N PRO D 16 -0.945 12.088 40.923 1.00 15.64 ATOM 75 CA PRO D 16 -2.240 11.791 40.297 1.00 18.87 ATOM 76 C PRO D 16 -2.613 12.798 39.211 1.00 20.58 ATOM 77 O PRO D 16 -2.066 13.897 39.201 1.00 19.37 ATOM 78 CB PRO D 16 -3.218 11.901 41.472 1.00 20.28 ATOM 79 CG PRO D 16 -2.575 12.863 42.413 1.00 24.79 ATOM 80 CD PRO D 16 -1.079 12.652 42.275 1.00 23.32 ATOM 81 N PRO D 17 -3.541 12.426 38.303 1.00 18.83 ATOM 82 CA PRO D 17 -3.995 13.348 37.247 1.00 17.26 ATOM 83 C PRO D 17 -4.436 14.710 37.798 1.00 12.72 ATOM 84 O PRO D 17 -4.220 15.735 37.110 1.00 16.80 ATOM 85 CB PRO D 17 -5.178 12.595 36.600 1.00 18.71 ATOM 86 CG PRO D 17 -4.827 11.115 36.810 1.00 24.88 ATOM 87 CD PRO D 17 -4.107 11.069 38.164 1.00 18.30 ATOM 88 N GLU D 18 -4.995 14.745 39.012 1.00 19.25 ATOM 89 CA GLU D 18 -5.505 16.008 39.565 1.00 21.17 ATOM 90 C GLU D 18 -4.424 17.017 39.963 1.00 17.96 ATOM 91 O GLU D 18 -4.756 18.117 40.395 1.00 15.17 ATOM 92 CB GLU D 18 -6.481 15.805 40.738 1.00 25.52 ATOM 93 CG GLU D 18 -7.444 14.632 40.580 1.00 36.06 ATOM 94 CD GLU D 18 -6.811 13.311 41.004 1.00 32.73 ATOM 95 OE1 GLU D 18 -6.614 13.100 42.226 1.00 51.72 ATOM 96 OE2 GLU D 18 -6.490 12.495 40.115 1.00 27.12 ATOM 97 N GLN D 19 -3.142 16.668 39.805 1.00 15.21 ATOM 98 CA GLN D 19 -2.089 17.689 39.873 1.00 12.63 ATOM 99 C GLN D 19 -2.366 18.850 38.951 1.00 13.77 ATOM 100 O GLN D 19 -1.978 19.999 39.225 1.00 14.51 ATOM 101 CB GLN D 19 -0.752 17.129 39.371 1.00 14.80 ATOM 102 CG GLN D 19 -0.001 16.209 40.274 1.00 26.06 ATOM 103 CD GLN D 19 1.172 15.611 39.506 1.00 17.03 ATOM 104 OE1 GLN D 19 2.291 16.121 39.573 1.00 22.08 ATOM 105 NE2 GLN D 19 0.902 14.564 38.723 1.00 17.87 ATOM 106 N CYS D 20 -2.961 18.526 37.802 1.00 13.66 ATOM 107 CA CYS D 20 -3.107 19.457 36.704 1.00 12.81 ATOM 108 C CYS D 20 -4.576 19.812 36.542 1.00 11.17 ATOM 109 O CYS D 20 -5.434 18.921 36.618 1.00 15.20 ATOM 110 CB CYS D 20 -2.624 18.813 35.401 1.00 12.28 ATOM 111 SG CYS D 20 -0.836 18.400 35.375 1.00 14.15 ATOM 112 N CYS D 21 -4.852 21.090 36.292 1.00 14.71 ATOM 113 CA CYS D 21 -6.226 21.516 36.047 1.00 15.06 ATOM 114 C CYS D 21 -6.854 20.676 34.934 1.00 16.59 ATOM 115 O CYS D 21 -8.027 20.287 35.032 1.00 13.45 ATOM 116 CB CYS D 21 -6.283 23.009 35.706 1.00 14.36 ATOM 117 SG CYS D 21 -5.739 24.042 37.058 1.00 21.61 ATOM 118 N SER D 22 -6.044 20.344 33.922 1.00 13.47 ATOM 119 CA SER D 22 -6.483 19.610 32.733 1.00 13.02 ATOM 120 C SER D 22 -6.666 18.115 32.961 1.00 12.97 ATOM 121 O SER D 22 -7.240 17.418 32.128 1.00 17.53 ATOM 122 CB SER D 22 -5.459 19.774 31.621 1.00 15.13 ATOM 123 OG SER D 22 -4.301 19.040 31.969 1.00 16.91 ATOM 124 N GLY D 23 -6.147 17.614 34.073 1.00 13.31 ATOM 125 CA GLY D 23 -6.324 16.224 34.424 1.00 12.22 ATOM 126 C GLY D 23 -5.367 15.306 33.692 1.00 19.02 ATOM 127 O GLY D 23 -5.539 14.081 33.727 1.00 16.83 ATOM 128 N ALA D 24 -4.363 15.887 33.030 1.00 12.99 ATOM 129 CA ALA D 24 -3.326 15.083 32.380 1.00 13.37 ATOM 130 C ALA D 24 -1.936 15.656 32.608 1.00 9.82 ATOM 131 O ALA D 24 -1.654 16.797 32.241 1.00 15.66 ATOM 132 CB ALA D 24 -3.583 14.969 30.904 1.00 14.68 ATOM 133 N CYS D 25 -1.085 14.840 33.208 1.00 14.66 ATOM 134 CA CYS D 25 0.316 15.185 33.395 1.00 15.20 ATOM 135 C CYS D 25 1.097 14.267 32.474 1.00 11.08 ATOM 136 O CYS D 25 1.086 13.047 32.658 1.00 15.67 ATOM 137 CB CYS D 25 0.703 14.944 34.851 1.00 10.67 ATOM 138 SG CYS D 25 2.457 15.271 35.240 1.00 14.70 ATOM 139 N VAL D 26 1.780 14.847 31.497 1.00 9.68 ATOM 140 CA VAL D 26 2.346 14.064 30.397 1.00 13.94 ATOM 141 C VAL D 26 3.817 14.353 30.202 1.00 11.37 ATOM 142 O VAL D 26 4.289 15.418 30.580 1.00 10.54 ATOM 143 CB VAL D 26 1.623 14.389 29.095 1.00 11.76 ATOM 144 CG1 VAL D 26 0.170 13.931 29.176 1.00 12.65 ATOM 145 CG2 VAL D 26 1.693 15.883 28.798 1.00 13.55 ATOM 146 N PRO D 27 4.559 13.407 29.623 1.00 12.85 ATOM 147 CA PRO D 27 5.969 13.742 29.375 1.00 11.11 ATOM 148 C PRO D 27 6.081 14.845 28.346 1.00 12.37 ATOM 149 O PRO D 27 5.370 14.843 27.321 1.00 14.87 ATOM 150 CB PRO D 27 6.554 12.441 28.803 1.00 15.56 ATOM 151 CG PRO D 27 5.599 11.364 29.223 1.00 18.87 ATOM 152 CD PRO D 27 4.248 11.998 29.348 1.00 15.04 ATOM 153 N HIS D 28 6.934 15.823 28.632 1.00 8.57 ATOM 154 CA HIS D 28 7.283 16.828 27.652 1.00 10.81 ATOM 155 C HIS D 28 8.011 16.147 26.498 1.00 15.30 ATOM 156 O HIS D 28 8.760 15.174 26.709 1.00 10.51 ATOM 157 CB HIS D 28 8.140 17.927 28.285 1.00 10.72 ATOM 158 CG HIS D 28 8.219 19.175 27.467 1.00 11.59 ATOM 159 ND1 HIS D 28 9.149 19.359 26.458 1.00 12.52 ATOM 160 CD2 HIS D 28 7.484 20.315 27.513 1.00 13.29 ATOM 161 CE1 HIS D 28 8.978 20.554 25.921 1.00 17.16 ATOM 162 NE2 HIS D 28 7.968 21.152 26.536 1.00 15.48 ATOM 163 N PRO D 29 7.774 16.622 25.258 1.00 14.49 ATOM 164 CA PRO D 29 8.412 15.976 24.108 1.00 13.55 ATOM 165 C PRO D 29 9.922 16.249 24.006 1.00 13.43 ATOM 166 O PRO D 29 10.634 15.490 23.323 1.00 13.47 ATOM 167 CB PRO D 29 7.677 16.586 22.908 1.00 18.08 ATOM 168 CG PRO D 29 7.220 17.927 23.397 1.00 19.60 ATOM 169 CD PRO D 29 6.843 17.692 24.845 1.00 14.14 ATOM 170 N ILE D 30 10.395 17.296 24.687 1.00 12.06 ATOM 171 CA ILE D 30 11.775 17.751 24.545 1.00 8.54 ATOM 172 C ILE D 30 12.529 17.846 25.866 1.00 11.22 ATOM 173 O ILE D 30 13.610 17.254 26.030 1.00 10.37 ATOM 174 CB ILE D 30 11.830 19.108 23.846 1.00 9.62 ATOM 175 CG1 ILE D 30 11.275 18.976 22.431 1.00 15.43 ATOM 176 CG2 ILE D 30 13.264 19.601 23.776 1.00 10.84 ATOM 177 CD1 ILE D 30 12.114 18.055 21.546 1.00 21.17 ATOM 178 N LEU D 31 11.984 18.625 26.790 1.00 9.71 ATOM 179 CA LEU D 31 12.544 18.726 28.127 1.00 7.36 ATOM 180 C LEU D 31 12.313 17.433 28.888 1.00 8.12 ATOM 181 O LEU D 31 11.286 16.801 28.740 1.00 9.54 ATOM 182 CB LEU D 31 11.856 19.844 28.892 1.00 8.95 ATOM 183 CG LEU D 31 11.992 21.216 28.238 1.00 9.64 ATOM 184 CD1 LEU D 31 11.098 22.260 28.946 1.00 12.44 ATOM 185 CD2 LEU D 31 13.447 21.684 28.227 1.00 10.17 ATOM 186 N ARG D 32 13.226 17.078 29.787 1.00 8.21 ATOM 187 CA ARG D 32 13.085 15.803 30.455 1.00 6.53 ATOM 188 C ARG D 32 12.305 15.903 31.767 1.00 9.36 ATOM 189 O ARG D 32 12.704 15.381 32.819 1.00 8.11 ATOM 190 CB ARG D 32 14.459 15.133 30.535 1.00 9.18 ATOM 191 CG ARG D 32 14.838 14.889 29.094 1.00 14.16 ATOM 192 CD ARG D 32 16.096 14.154 28.839 1.00 13.90 ATOM 193 NE ARG D 32 15.993 13.674 27.461 1.00 12.95 ATOM 194 CZ ARG D 32 16.899 12.916 26.874 1.00 13.32 ATOM 195 NH1 ARG D 32 17.989 12.563 27.536 1.00 13.84 ATOM 196 NH2 ARG D 32 16.709 12.521 25.622 1.00 12.82 ATOM 197 N ILE D 33 11.160 16.587 31.667 1.00 9.00 ATOM 198 CA ILE D 33 10.239 16.722 32.777 1.00 7.13 ATOM 199 C ILE D 33 8.865 16.306 32.281 1.00 10.34 ATOM 200 O ILE D 33 8.659 16.179 31.080 1.00 8.77 ATOM 201 CB ILE D 33 10.084 18.199 33.207 1.00 9.58 ATOM 202 CG1 ILE D 33 9.871 19.097 32.001 1.00 8.96 ATOM 203 CG2 ILE D 33 11.280 18.673 34.028 1.00 12.73 ATOM 204 CD1 ILE D 33 9.347 20.450 32.396 1.00 12.11 ATOM 205 N PHE D 34 7.940 16.128 33.214 1.00 8.00 ATOM 206 CA PHE D 34 6.523 16.026 32.901 1.00 8.55 ATOM 207 C PHE D 34 5.900 17.434 32.996 1.00 9.05 ATOM 208 O PHE D 34 6.373 18.289 33.758 1.00 10.41 ATOM 209 CB PHE D 34 5.827 15.112 33.902 1.00 7.71 ATOM 210 CG PHE D 34 6.043 13.645 33.652 1.00 10.00 ATOM 211 CD1 PHE D 34 7.281 13.062 33.916 1.00 11.30 ATOM 212 CD2 PHE D 34 5.009 12.849 33.184 1.00 12.56 ATOM 213 CE1 PHE D 34 7.484 11.693 33.695 1.00 15.78 ATOM 214 CE2 PHE D 34 5.214 11.474 32.959 1.00 15.38 ATOM 215 CZ PHE D 34 6.458 10.911 33.218 1.00 14.59 ATOM 216 N VAL D 35 4.875 17.682 32.178 1.00 9.39 ATOM 217 CA VAL D 35 4.142 18.955 32.222 1.00 10.53 ATOM 218 C VAL D 35 2.655 18.703 32.152 1.00 8.28 ATOM 219 O VAL D 35 2.221 17.638 31.687 1.00 9.20 ATOM 220 CB VAL D 35 4.501 19.911 31.069 1.00 8.30 ATOM 221 CG1 VAL D 35 5.894 20.509 31.271 1.00 10.79 ATOM 222 CG2 VAL D 35 4.357 19.200 29.696 1.00 10.87 ATOM 223 N CYS D 36 1.880 19.684 32.602 1.00 8.96 ATOM 224 CA CYS D 36 0.427 19.584 32.494 1.00 10.60 ATOM 225 C CYS D 36 0.005 19.840 31.065 1.00 11.57 ATOM 226 O CYS D 36 0.405 20.824 30.442 1.00 13.66 ATOM 227 CB CYS D 36 -0.257 20.602 33.431 1.00 10.09 ATOM 228 SG CYS D 36 -0.004 20.245 35.183 1.00 11.89 ATOM 229 N GLN D 37 -0.820 18.943 30.556 1.00 14.64 ATOM 230 CA GLN D 37 -1.459 19.122 29.256 1.00 20.12 ATOM 231 C GLN D 37 -2.271 20.420 29.247 1.00 24.24 ATOM 232 O GLN D 37 -2.808 20.841 30.295 1.00 17.54 ATOM 233 CB GLN D 37 -2.349 17.914 28.997 1.00 22.06 ATOM 234 CG GLN D 37 -3.035 17.860 27.663 1.00 27.26 ATOM 235 CD GLN D 37 -3.896 16.615 27.562 1.00 23.77 ATOM 236 OE1 GLN D 37 -3.391 15.511 27.341 1.00 29.75 ATOM 237 NE2 GLN D 37 -5.203 16.783 27.757 1.00 38.49 ATOM 238 OXT GLN D 37 -2.382 21.095 28.213 1.00 21.13 TER