HEADER HYDROLASE INHIBITOR 31-DEC-69 1LU0 TITLE Atomic Resolution Structure of Squash Trypsin Inhibitor: Unexpected TITLE 2 Metal Coordination COMPND MOL_ID: 1; COMPND 2 MOLECULE: Trypsin inhibitor I; COMPND 3 CHAIN: A, B; COMPND 4 MUTATION: YES; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 1; COMPND 7 Trypsin inhibitor I; COMPND 8 CHAIN: A, B; COMPND 9 MUTATION: YES; COMPND 10 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 1.03 ANGSTORMS DBREF 1LU0 A 1 29 UNP P01074 ITR1_CUCMA 1 29 DBREF 1LU0 B 1 29 UNP P01074 ITR1_CUCMA 1 29 SEQRES 1 A 29 ARG VAL CYS PRO ARG ILE LEU LEU GLU CYS LYS LYS ASP SEQRES 2 A 29 SER ASP CYS LEU ALA GLU CYS VAL CYS LEU GLU HIS GLY SEQRES 3 A 29 TYR CYS GLY ATOM 1 N ARG A 1 44.351 57.600 9.425 1.00 18.79 ATOM 2 CA ARG A 1 43.898 57.050 10.682 1.00 13.68 ATOM 3 C ARG A 1 44.185 55.563 10.666 1.00 14.06 ATOM 4 O ARG A 1 43.954 54.974 9.558 1.00 20.94 ATOM 5 CB ARG A 1 42.417 57.318 10.873 1.00 12.54 ATOM 6 CG ARG A 1 41.860 56.926 12.235 1.00 11.14 ATOM 7 CD ARG A 1 40.441 57.408 12.431 1.00 10.86 ATOM 8 NE ARG A 1 39.468 56.887 11.560 1.00 11.46 ATOM 9 CZ ARG A 1 38.593 55.904 11.796 1.00 11.51 ATOM 10 NH1 ARG A 1 38.596 55.257 12.963 1.00 10.65 ATOM 11 NH2 ARG A 1 37.748 55.551 10.903 1.00 14.90 ATOM 12 N VAL A 2 44.645 54.991 11.710 1.00 12.14 ATOM 13 CA VAL A 2 45.024 53.573 11.851 1.00 12.10 ATOM 14 C VAL A 2 43.960 52.851 12.680 1.00 11.29 ATOM 15 O VAL A 2 43.903 53.011 13.860 1.00 11.78 ATOM 16 CB VAL A 2 46.405 53.345 12.411 1.00 16.32 ATOM 17 CG1 VAL A 2 46.652 51.800 12.317 1.00 19.58 ATOM 18 CG2 VAL A 2 47.503 54.071 11.665 1.00 23.30 ATOM 19 N CYS A 3 43.160 52.070 11.984 1.00 12.63 ATOM 20 CA CYS A 3 42.117 51.305 12.616 1.00 13.08 ATOM 21 C CYS A 3 42.146 49.909 12.070 1.00 11.80 ATOM 22 O CYS A 3 41.844 49.713 10.891 1.00 14.07 ATOM 23 CB CYS A 3 40.794 51.952 12.421 1.00 14.23 ATOM 24 SG CYS A 3 39.325 51.027 12.904 1.00 13.52 ATOM 25 N PRO A 4 42.604 48.937 12.817 1.00 11.43 ATOM 26 CA PRO A 4 42.707 47.577 12.258 1.00 12.01 ATOM 27 C PRO A 4 41.433 47.005 11.765 1.00 10.27 ATOM 28 O PRO A 4 40.326 47.313 12.292 1.00 11.03 ATOM 29 CB PRO A 4 43.307 46.836 13.426 1.00 15.38 ATOM 30 CG PRO A 4 43.405 47.686 14.531 1.00 22.20 ATOM 31 CD PRO A 4 43.100 49.020 14.186 1.00 12.59 ATOM 32 N ARG A 5 41.524 46.147 10.786 1.00 11.10 ATOM 33 CA ARG A 5 40.376 45.492 10.199 0.69 10.84 ATOM 34 C ARG A 5 40.081 44.242 11.064 1.00 10.45 ATOM 35 O ARG A 5 40.279 43.084 10.658 1.00 12.68 ATOM 36 CB ARG A 5 40.570 45.146 8.744 0.69 12.66 ATOM 37 CG ARG A 5 40.983 46.309 7.835 0.69 12.80 ATOM 38 CD ARG A 5 41.262 45.821 6.393 0.69 14.97 ATOM 39 NE ARG A 5 41.785 46.850 5.516 0.69 14.49 ATOM 40 CZ ARG A 5 41.160 47.775 4.933 0.69 14.23 ATOM 41 NH1 ARG A 5 39.865 47.913 5.038 0.69 22.91 ATOM 42 NH2 ARG A 5 41.695 48.748 4.149 0.69 20.16 ATOM 43 N ILE A 6 39.568 44.502 12.246 1.00 10.85 ATOM 44 CA ILE A 6 39.188 43.482 13.230 1.00 10.89 ATOM 45 C ILE A 6 37.807 43.769 13.685 1.00 11.18 ATOM 46 O ILE A 6 37.448 44.892 14.031 1.00 13.23 ATOM 47 CB ILE A 6 40.203 43.439 14.390 1.00 12.48 ATOM 48 CG1 ILE A 6 41.629 43.140 13.915 1.00 13.90 ATOM 49 CG2 ILE A 6 39.730 42.466 15.458 1.00 14.96 ATOM 50 CD1 ILE A 6 42.765 43.279 14.923 1.00 18.33 ATOM 51 N LEU A 7 36.940 42.718 13.659 1.00 10.65 ATOM 52 CA LEU A 7 35.554 42.864 14.025 1.00 10.90 ATOM 53 C LEU A 7 35.471 42.927 15.545 1.00 10.56 ATOM 54 O LEU A 7 35.725 41.933 16.235 1.00 11.43 ATOM 55 CB LEU A 7 34.795 41.617 13.495 1.00 12.17 ATOM 56 CG LEU A 7 33.315 41.620 13.754 1.00 13.29 ATOM 57 CD1 LEU A 7 32.624 42.707 12.961 1.00 16.24 ATOM 58 CD2 LEU A 7 32.713 40.240 13.400 1.00 15.21 ATOM 59 N LEU A 8 35.032 44.062 16.097 1.00 9.86 ATOM 60 CA LEU A 8 34.925 44.255 17.499 1.00 9.98 ATOM 61 C LEU A 8 33.670 45.067 17.808 1.00 10.78 ATOM 62 O LEU A 8 33.400 46.117 17.149 1.00 11.64 ATOM 63 CB LEU A 8 36.134 44.991 18.096 1.00 11.81 ATOM 64 CG LEU A 8 37.384 44.180 18.199 1.00 13.69 ATOM 65 CD1 LEU A 8 38.563 45.032 18.763 1.00 18.73 ATOM 66 CD2 LEU A 8 37.223 42.965 19.148 1.00 15.64 ATOM 67 N GLU A 9 32.908 44.609 18.759 1.00 11.21 ATOM 68 CA GLU A 9 31.808 45.353 19.318 1.00 11.77 ATOM 69 C GLU A 9 32.278 46.322 20.347 1.00 11.60 ATOM 70 O GLU A 9 33.398 46.216 20.926 1.00 12.62 ATOM 71 CB GLU A 9 30.774 44.346 19.951 1.00 12.79 ATOM 72 CG GLU A 9 30.094 43.518 18.833 1.00 14.31 ATOM 73 CD GLU A 9 29.106 42.528 19.442 1.00 15.91 ATOM 74 OE1 GLU A 9 29.323 41.325 19.330 1.00 16.71 ATOM 75 OE2 GLU A 9 28.148 42.983 20.065 1.00 24.15 ATOM 76 N CYS A 10 31.467 47.292 20.708 1.00 11.42 ATOM 77 CA CYS A 10 31.839 48.279 21.567 1.00 11.75 ATOM 78 C CYS A 10 30.588 49.057 22.163 1.00 12.52 ATOM 79 O CYS A 10 29.566 49.104 21.557 1.00 15.62 ATOM 80 CB CYS A 10 32.706 49.363 20.891 1.00 10.88 ATOM 81 SG CYS A 10 31.973 50.096 19.437 1.00 12.08 ATOM 82 N LYS A 11 30.869 49.542 23.391 1.00 14.21 ATOM 83 CA LYS A 11 29.913 50.425 23.991 1.00 15.40 ATOM 84 C LYS A 11 30.503 51.834 24.014 1.00 16.30 ATOM 85 O LYS A 11 29.854 52.848 24.037 1.00 20.05 ATOM 86 CB LYS A 11 29.459 50.054 25.384 1.00 25.57 ATOM 87 CG LYS A 11 28.855 48.678 25.585 1.00 35.60 ATOM 88 CD LYS A 11 27.533 48.192 25.118 1.00 51.97 ATOM 89 CE LYS A 11 26.216 48.705 25.678 1.00 64.91 ATOM 90 NZ LYS A 11 25.906 48.429 27.096 1.00 74.95 ATOM 91 N LYS A 12 31.837 52.034 24.074 1.00 15.69 ATOM 92 CA LYS A 12 32.590 53.254 24.169 1.00 15.82 ATOM 93 C LYS A 12 33.792 53.158 23.263 1.00 12.87 ATOM 94 O LYS A 12 34.267 52.081 22.972 1.00 11.82 ATOM 95 CB LYS A 12 33.035 53.579 25.620 1.00 18.87 ATOM 96 CG LYS A 12 32.083 53.435 26.764 1.00 26.84 ATOM 97 CD LYS A 12 31.152 54.562 26.893 1.00 37.95 ATOM 98 CE LYS A 12 30.092 54.458 27.993 1.00 49.20 ATOM 99 NZ LYS A 12 30.510 53.562 29.126 1.00 68.18 ATOM 100 N ASP A 13 34.387 54.272 22.956 1.00 12.94 ATOM 101 CA ASP A 13 35.630 54.270 22.121 1.00 11.94 ATOM 102 C ASP A 13 36.776 53.471 22.736 1.00 11.68 ATOM 103 O ASP A 13 37.566 52.845 22.050 1.00 11.54 ATOM 104 CB ASP A 13 36.154 55.682 21.815 1.00 13.11 ATOM 105 CG ASP A 13 35.275 56.510 20.918 1.00 13.89 ATOM 106 OD1 ASP A 13 35.544 57.716 20.832 1.00 16.07 ATOM 107 OD2 ASP A 13 34.348 55.998 20.314 1.00 12.92 ATOM 108 N SER A 14 36.842 53.454 24.076 1.00 12.77 ATOM 109 CA SER A 14 37.786 52.733 24.793 1.00 13.15 ATOM 110 C SER A 14 37.761 51.219 24.561 1.00 11.48 ATOM 111 O SER A 14 38.781 50.544 24.784 1.00 14.20 ATOM 112 CB SER A 14 37.733 53.020 26.300 1.00 18.35 ATOM 113 OG SER A 14 36.492 52.573 26.736 1.00 23.00 ATOM 114 N ASP A 15 36.658 50.679 24.070 1.00 11.22 ATOM 115 CA ASP A 15 36.551 49.313 23.717 1.00 11.58 ATOM 116 C ASP A 15 37.271 48.937 22.423 1.00 10.35 ATOM 117 O ASP A 15 37.453 47.798 22.096 1.00 13.11 ATOM 118 CB ASP A 15 35.105 48.860 23.587 1.00 12.92 ATOM 119 CG ASP A 15 34.382 48.822 24.921 1.00 17.56 ATOM 120 OD1 ASP A 15 33.159 49.228 24.891 1.00 17.58 ATOM 121 OD2 ASP A 15 34.993 48.373 25.905 1.00 21.15 ATOM 122 N CYS A 16 37.695 49.975 21.679 1.00 9.37 ATOM 123 CA CYS A 16 38.241 49.759 20.386 1.00 8.59 ATOM 124 C CYS A 16 39.780 49.797 20.428 1.00 8.89 ATOM 125 O CYS A 16 40.364 50.297 21.370 1.00 11.34 ATOM 126 CB CYS A 16 37.655 50.788 19.412 1.00 9.54 ATOM 127 SG CYS A 16 35.869 50.691 19.222 1.00 10.49 ATOM 128 N LEU A 17 40.392 49.278 19.375 1.00 8.99 ATOM 129 CA LEU A 17 41.839 49.257 19.206 1.00 9.34 ATOM 130 C LEU A 17 42.308 50.473 18.435 1.00 9.39 ATOM 131 O LEU A 17 41.625 51.016 17.560 1.00 9.96 ATOM 132 CB LEU A 17 42.238 48.027 18.396 1.00 10.62 ATOM 133 CG LEU A 17 41.991 46.688 19.026 1.00 13.01 ATOM 134 CD1 LEU A 17 42.106 45.610 17.950 1.00 18.41 ATOM 135 CD2 LEU A 17 42.893 46.521 20.196 1.00 17.33 ATOM 136 N ALA A 18 43.558 50.882 18.752 1.00 9.95 ATOM 137 CA ALA A 18 44.280 51.854 17.938 1.00 9.74 ATOM 138 C ALA A 18 43.422 53.103 17.803 1.00 9.37 ATOM 139 O ALA A 18 42.958 53.654 18.866 1.00 10.71 ATOM 140 CB ALA A 18 44.723 51.243 16.667 1.00 10.74 ATOM 141 N GLU A 19 43.200 53.585 16.603 1.00 9.02 ATOM 142 CA GLU A 19 42.402 54.812 16.355 1.00 8.96 ATOM 143 C GLU A 19 41.053 54.493 15.829 1.00 8.28 ATOM 144 O GLU A 19 40.364 55.392 15.284 1.00 9.19 ATOM 145 CB GLU A 19 43.163 55.724 15.385 1.00 8.84 ATOM 146 CG GLU A 19 44.518 56.148 15.928 1.00 9.66 ATOM 147 CD GLU A 19 45.382 56.904 14.923 1.00 8.88 ATOM 148 OE1 GLU A 19 46.365 57.511 15.418 1.00 9.80 ATOM 149 OE2 GLU A 19 45.129 56.880 13.721 1.00 10.25 ATOM 150 N CYS A 20 40.547 53.273 16.010 1.00 8.59 ATOM 151 CA CYS A 20 39.170 52.991 15.764 1.00 8.76 ATOM 152 C CYS A 20 38.299 53.738 16.820 1.00 8.25 ATOM 153 O CYS A 20 38.709 53.953 17.924 1.00 10.11 ATOM 154 CB CYS A 20 38.868 51.504 15.888 1.00 9.64 ATOM 155 SG CYS A 20 39.796 50.403 14.768 1.00 11.83 ATOM 156 N VAL A 21 37.102 54.046 16.414 1.00 8.70 ATOM 157 CA VAL A 21 36.092 54.664 17.321 1.00 9.97 ATOM 158 C VAL A 21 34.867 53.817 17.335 1.00 9.35 ATOM 159 O VAL A 21 34.629 52.959 16.452 1.00 9.76 ATOM 160 CB VAL A 21 35.811 56.121 16.942 0.71 13.91 ATOM 161 CG1 VAL A 21 37.092 56.919 16.690 0.71 16.81 ATOM 162 CG2 VAL A 21 34.984 56.166 15.708 0.71 14.05 ATOM 163 N CYS A 22 34.058 53.985 18.386 1.00 9.79 ATOM 164 CA CYS A 22 32.873 53.178 18.580 1.00 10.45 ATOM 165 C CYS A 22 31.744 53.851 17.791 1.00 12.75 ATOM 166 O CYS A 22 31.294 54.936 18.144 1.00 16.81 ATOM 167 CB CYS A 22 32.526 53.001 20.013 1.00 12.09 ATOM 168 SG CYS A 22 31.151 51.811 20.225 1.00 13.12 ATOM 169 N LEU A 23 31.247 53.183 16.780 1.00 14.44 ATOM 170 CA LEU A 23 30.094 53.717 16.066 1.00 18.73 ATOM 171 C LEU A 23 28.801 53.266 16.721 1.00 19.68 ATOM 172 O LEU A 23 28.680 52.219 17.396 1.00 23.10 ATOM 173 CB LEU A 23 30.275 53.301 14.630 1.00 26.19 ATOM 174 CG LEU A 23 31.625 53.400 13.966 1.00 32.08 ATOM 175 CD1 LEU A 23 31.635 52.682 12.609 1.00 56.35 ATOM 176 CD2 LEU A 23 32.095 54.815 13.751 1.00 46.78 ATOM 177 N GLU A 24 27.713 54.028 16.599 1.00 23.17 ATOM 178 CA GLU A 24 26.479 53.850 17.291 1.00 23.83 ATOM 179 C GLU A 24 25.719 52.571 16.920 1.00 30.50 ATOM 180 O GLU A 24 24.949 52.030 17.742 1.00 27.64 ATOM 181 CB GLU A 24 25.525 55.040 17.096 1.00 27.59 ATOM 182 CG GLU A 24 25.842 56.122 18.126 1.00 44.25 ATOM 183 CD GLU A 24 24.829 57.218 18.280 1.00 48.89 ATOM 184 OE1 GLU A 24 23.815 57.102 17.572 1.00 49.69 ATOM 185 OE2 GLU A 24 25.106 58.133 19.115 1.00 49.40 ATOM 186 N HIS A 25 25.980 52.072 15.750 1.00 22.11 ATOM 187 CA HIS A 25 25.512 50.745 15.266 1.00 21.47 ATOM 188 C HIS A 25 26.098 49.588 16.073 1.00 24.10 ATOM 189 O HIS A 25 25.477 48.506 15.964 1.00 30.42 ATOM 190 CB HIS A 25 25.809 50.651 13.779 1.00 22.19 ATOM 191 CG HIS A 25 25.238 49.499 13.077 1.00 27.53 ATOM 192 ND1 HIS A 25 23.927 49.550 12.604 1.00 33.64 ATOM 193 CD2 HIS A 25 25.624 48.274 12.727 1.00 30.75 ATOM 194 CE1 HIS A 25 23.552 48.466 11.993 1.00 31.48 ATOM 195 NE2 HIS A 25 24.593 47.668 12.077 1.00 30.56 ATOM 196 N GLY A 26 27.152 49.836 16.872 1.00 20.15 ATOM 197 CA GLY A 26 27.683 49.005 17.988 1.00 24.79 ATOM 198 C GLY A 26 28.978 48.312 17.738 1.00 14.65 ATOM 199 O GLY A 26 29.331 47.369 18.403 1.00 14.16 ATOM 200 N TYR A 27 29.697 48.769 16.668 1.00 13.35 ATOM 201 CA TYR A 27 30.986 48.183 16.254 0.51 11.29 ATOM 202 C TYR A 27 32.013 49.281 16.085 1.00 10.87 ATOM 203 O TYR A 27 31.709 50.435 15.782 1.00 12.90 ATOM 204 CB TYR A 27 30.876 47.356 14.976 0.51 12.65 ATOM 205 CG TYR A 27 30.230 45.991 15.148 0.51 14.00 ATOM 206 CD1 TYR A 27 30.921 44.818 15.152 0.51 14.16 ATOM 207 CD2 TYR A 27 28.847 45.907 15.355 0.51 17.10 ATOM 208 CE1 TYR A 27 30.352 43.576 15.322 0.51 14.93 ATOM 209 CE2 TYR A 27 28.219 44.714 15.533 0.51 17.43 ATOM 210 CZ TYR A 27 28.984 43.552 15.514 0.51 16.44 ATOM 211 OH TYR A 27 28.365 42.324 15.674 0.51 17.79 ATOM 212 N CYS A 28 33.270 48.847 16.289 1.00 10.53 ATOM 213 CA CYS A 28 34.403 49.712 16.072 1.00 10.04 ATOM 214 C CYS A 28 34.625 49.955 14.588 1.00 10.31 ATOM 215 O CYS A 28 34.457 49.064 13.767 1.00 12.91 ATOM 216 CB CYS A 28 35.673 49.078 16.671 1.00 9.81 ATOM 217 SG CYS A 28 35.575 48.786 18.462 1.00 9.93 ATOM 218 N GLY A 29 35.096 51.166 14.244 1.00 10.76 ATOM 219 CA GLY A 29 35.435 51.451 12.860 1.00 11.93 ATOM 220 C GLY A 29 36.140 52.739 12.706 1.00 12.60 ATOM 221 O GLY A 29 36.372 53.134 11.513 1.00 15.82 ATOM 222 OXT GLY A 29 36.553 53.402 13.694 1.00 11.37 ATOM 223 ZN ZN A 201 47.280 58.630 14.066 0.50 8.59 ATOM 224 C1 GOL A 202 36.710 47.621 11.348 0.60 12.51 ATOM 225 O1 GOL A 202 37.624 48.428 12.109 0.60 15.65 ATOM 226 C2 GOL A 202 36.693 48.006 9.914 0.60 12.46 ATOM 227 O2 GOL A 202 37.967 47.728 9.327 0.60 12.87 ATOM 228 C3 GOL A 202 36.327 49.437 9.650 0.60 15.09 ATOM 229 O3 GOL A 202 36.403 49.806 8.237 0.60 15.32 ATOM 230 S SO4 A 205 47.280 58.630 9.184 0.16 13.47 ATOM 231 O1 SO4 A 205 48.286 57.858 9.977 0.32 17.85 ATOM 232 O2 SO4 A 205 46.512 57.678 8.297 0.32 19.82 TER