HEADER HYDROLASE/HYDROLASE INHIBITOR 11-DEC-98 2STB TITLE ANIONIC SALMON TRYPSIN IN COMPLEX WITH SQUASH SEED INHIBITOR TITLE 2 (CUCURBITA PEPO TRYPSIN INHIBITOR II) COMPND MOL_ID: 2; COMPND 2 MOLECULE: PROTEIN (TRYPSIN INHIBITOR); COMPND 3 CHAIN: I; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 1.80 ANGSTORMS DBREF 2STB I 501 529 UNP P10293 ITR3_CUCPE 4 32 SEQRES 1 I 29 ARG VAL CYS PRO LYS ILE LEU MET GLU CYS LYS LYS ASP SEQRES 2 I 29 SER ASP CYS LEU ALA GLU CYS ILE CYS LEU GLU HIS GLY SEQRES 3 I 29 TYR CYS GLY ATOM 1 N ARG I 501 17.042 23.325 52.020 1.00 40.15 ATOM 2 CA ARG I 501 16.877 22.806 50.688 1.00 38.00 ATOM 3 C ARG I 501 17.408 24.007 49.915 1.00 36.12 ATOM 4 O ARG I 501 16.655 24.920 49.605 1.00 35.87 ATOM 5 CB ARG I 501 15.386 22.547 50.494 1.00 39.71 ATOM 6 CG ARG I 501 15.012 21.197 49.877 1.00 40.76 ATOM 7 CD ARG I 501 15.578 20.033 50.667 0.00 40.07 ATOM 8 NE ARG I 501 15.376 18.785 49.950 0.00 40.09 ATOM 9 CZ ARG I 501 16.121 17.702 50.190 0.00 39.98 ATOM 10 NH1 ARG I 501 17.096 17.701 51.099 0.00 40.17 ATOM 11 NH2 ARG I 501 15.869 16.582 49.521 0.00 40.50 ATOM 12 N VAL I 502 18.736 24.114 49.782 1.00 32.91 ATOM 13 CA VAL I 502 19.367 25.206 49.044 1.00 29.49 ATOM 14 C VAL I 502 18.958 24.924 47.616 1.00 26.83 ATOM 15 O VAL I 502 19.363 23.860 47.124 1.00 26.87 ATOM 16 CB VAL I 502 20.916 25.129 49.175 1.00 30.31 ATOM 17 CG1 VAL I 502 21.666 26.175 48.330 1.00 29.86 ATOM 18 CG2 VAL I 502 21.233 25.356 50.633 1.00 30.78 ATOM 19 N CYS I 503 18.150 25.765 46.975 1.00 22.96 ATOM 20 CA CYS I 503 17.803 25.493 45.598 1.00 20.77 ATOM 21 C CYS I 503 18.104 26.740 44.772 1.00 17.25 ATOM 22 O CYS I 503 17.504 27.788 45.005 1.00 16.54 ATOM 23 CB CYS I 503 16.327 25.117 45.519 1.00 19.77 ATOM 24 SG CYS I 503 15.867 24.733 43.814 1.00 22.21 ATOM 25 N PRO I 504 19.081 26.752 43.862 1.00 15.89 ATOM 26 CA PRO I 504 19.318 27.881 42.966 1.00 14.62 ATOM 27 C PRO I 504 18.119 28.175 42.072 1.00 13.73 ATOM 28 O PRO I 504 17.393 27.260 41.663 1.00 14.93 ATOM 29 CB PRO I 504 20.565 27.491 42.204 1.00 15.23 ATOM 30 CG PRO I 504 20.642 25.997 42.343 1.00 18.23 ATOM 31 CD PRO I 504 20.088 25.715 43.730 1.00 16.54 ATOM 32 N LYS I 505 17.912 29.434 41.699 1.00 12.31 ATOM 33 CA LYS I 505 16.731 29.780 40.938 1.00 13.24 ATOM 34 C LYS I 505 16.847 29.640 39.406 1.00 13.92 ATOM 35 O LYS I 505 16.242 30.584 38.668 1.00 13.03 ATOM 36 CB LYS I 505 16.331 31.202 41.395 1.00 12.07 ATOM 37 CG LYS I 505 15.760 31.075 42.827 1.00 11.83 ATOM 38 CD LYS I 505 15.472 32.401 43.526 1.00 11.43 ATOM 39 CE LYS I 505 14.898 32.108 44.930 1.00 10.26 ATOM 40 NZ LYS I 505 14.720 33.365 45.642 1.00 9.93 ATOM 41 N ILE I 506 17.435 28.660 38.912 1.00 13.66 ATOM 42 CA ILE I 506 17.527 28.467 37.465 1.00 14.96 ATOM 43 C ILE I 506 16.299 27.672 37.009 1.00 16.14 ATOM 44 O ILE I 506 15.757 26.898 37.812 1.00 16.94 ATOM 45 CB ILE I 506 18.890 27.721 37.150 1.00 15.21 ATOM 46 CG1 ILE I 506 19.009 27.399 35.656 1.00 14.31 ATOM 47 CG2 ILE I 506 18.988 26.430 37.960 1.00 15.19 ATOM 48 CD1 ILE I 506 20.390 26.880 35.259 1.00 14.79 ATOM 49 N LEU I 507 15.782 27.878 35.792 1.00 16.77 ATOM 50 CA LEU I 507 14.690 27.055 35.284 1.00 18.13 ATOM 51 C LEU I 507 15.309 25.820 34.616 1.00 19.51 ATOM 52 O LEU I 507 16.087 25.935 33.666 1.00 18.78 ATOM 53 CB LEU I 507 13.856 27.829 34.261 1.00 19.34 ATOM 54 CG LEU I 507 12.532 27.151 33.909 1.00 21.62 ATOM 55 CD1 LEU I 507 11.559 27.343 35.086 1.00 21.93 ATOM 56 CD2 LEU I 507 11.972 27.737 32.623 1.00 23.28 ATOM 57 N MET I 508 14.992 24.625 35.085 1.00 20.96 ATOM 58 CA MET I 508 15.596 23.380 34.624 1.00 24.01 ATOM 59 C MET I 508 14.507 22.326 34.616 1.00 26.57 ATOM 60 O MET I 508 13.773 22.124 35.597 1.00 25.39 ATOM 61 CB MET I 508 16.707 23.006 35.588 0.50 23.78 ATOM 62 CG MET I 508 17.570 21.825 35.216 0.50 23.99 ATOM 63 SD MET I 508 18.908 21.686 36.420 0.50 26.01 ATOM 64 CE MET I 508 20.100 22.709 35.595 0.50 23.85 ATOM 65 N GLU I 509 14.383 21.674 33.471 1.00 30.64 ATOM 66 CA GLU I 509 13.418 20.602 33.312 1.00 33.11 ATOM 67 C GLU I 509 13.950 19.374 34.043 1.00 34.12 ATOM 68 O GLU I 509 15.166 19.154 34.099 1.00 34.44 ATOM 69 CB GLU I 509 13.243 20.317 31.831 1.00 34.09 ATOM 70 CG GLU I 509 12.752 21.546 31.075 0.00 37.26 ATOM 71 CD GLU I 509 12.492 21.380 29.587 0.00 39.02 ATOM 72 OE1 GLU I 509 12.735 20.305 29.043 1.00 42.14 ATOM 73 OE2 GLU I 509 12.042 22.345 28.971 0.00 39.52 ATOM 74 N CYS I 510 13.086 18.561 34.625 1.00 36.08 ATOM 75 CA CYS I 510 13.533 17.354 35.291 1.00 38.10 ATOM 76 C CYS I 510 12.447 16.281 35.208 1.00 40.41 ATOM 77 O CYS I 510 11.277 16.548 34.925 1.00 40.47 ATOM 78 CB CYS I 510 13.844 17.657 36.746 1.00 36.77 ATOM 79 SG CYS I 510 12.361 18.314 37.535 1.00 39.15 ATOM 80 N LYS I 511 12.889 15.033 35.343 1.00 42.70 ATOM 81 CA LYS I 511 12.035 13.854 35.422 1.00 44.89 ATOM 82 C LYS I 511 12.230 13.304 36.838 1.00 45.80 ATOM 83 O LYS I 511 11.307 12.778 37.456 1.00 47.38 ATOM 84 CB LYS I 511 12.472 12.800 34.388 1.00 44.43 ATOM 85 CG LYS I 511 12.510 13.266 32.940 0.00 43.76 ATOM 86 CD LYS I 511 13.091 12.166 32.061 0.00 43.02 ATOM 87 CE LYS I 511 13.176 12.597 30.601 0.00 43.05 ATOM 88 NZ LYS I 511 14.121 13.683 30.411 0.00 43.14 ATOM 89 N LYS I 512 13.440 13.433 37.397 1.00 45.99 ATOM 90 CA LYS I 512 13.765 12.952 38.729 1.00 45.98 ATOM 91 C LYS I 512 14.587 14.002 39.470 1.00 46.10 ATOM 92 O LYS I 512 15.197 14.863 38.824 1.00 45.76 ATOM 93 CB LYS I 512 14.567 11.630 38.656 1.00 45.96 ATOM 94 CG LYS I 512 15.820 11.523 37.781 0.00 45.83 ATOM 95 CD LYS I 512 15.525 11.128 36.331 0.00 45.76 ATOM 96 CE LYS I 512 14.937 9.725 36.185 0.00 45.82 ATOM 97 NZ LYS I 512 15.868 8.703 36.628 0.00 45.88 ATOM 98 N ASP I 513 14.628 13.928 40.815 1.00 46.00 ATOM 99 CA ASP I 513 15.366 14.842 41.675 1.00 44.60 ATOM 100 C ASP I 513 16.800 14.972 41.239 1.00 45.19 ATOM 101 O ASP I 513 17.277 16.088 41.108 1.00 46.21 ATOM 102 CB ASP I 513 15.372 14.379 43.123 1.00 43.79 ATOM 103 CG ASP I 513 14.051 14.469 43.883 1.00 46.17 ATOM 104 OD1 ASP I 513 13.007 14.756 43.293 1.00 46.48 ATOM 105 OD2 ASP I 513 14.066 14.244 45.096 1.00 47.11 ATOM 106 N SER I 514 17.446 13.857 40.901 1.00 45.72 ATOM 107 CA SER I 514 18.837 13.782 40.459 1.00 44.77 ATOM 108 C SER I 514 19.196 14.693 39.273 1.00 44.17 ATOM 109 O SER I 514 20.370 14.884 38.950 1.00 44.14 ATOM 110 CB SER I 514 19.120 12.326 40.108 0.00 44.63 ATOM 111 OG SER I 514 18.364 11.428 40.926 0.00 45.08 ATOM 112 N ASP I 515 18.197 15.235 38.575 1.00 43.19 ATOM 113 CA ASP I 515 18.440 16.132 37.466 1.00 42.63 ATOM 114 C ASP I 515 18.748 17.541 37.923 1.00 40.13 ATOM 115 O ASP I 515 19.419 18.293 37.222 1.00 41.22 ATOM 116 CB ASP I 515 17.220 16.156 36.572 1.00 46.20 ATOM 117 CG ASP I 515 16.905 14.797 35.956 1.00 50.49 ATOM 118 OD1 ASP I 515 17.818 13.997 35.712 1.00 52.34 ATOM 119 OD2 ASP I 515 15.732 14.538 35.716 1.00 51.21 ATOM 120 N CYS I 516 18.269 17.863 39.113 1.00 36.62 ATOM 121 CA CYS I 516 18.360 19.194 39.661 1.00 34.12 ATOM 122 C CYS I 516 19.688 19.499 40.327 1.00 33.54 ATOM 123 O CYS I 516 20.476 18.599 40.623 1.00 35.09 ATOM 124 CB CYS I 516 17.232 19.365 40.646 1.00 31.76 ATOM 125 SG CYS I 516 15.632 19.060 39.869 1.00 30.74 ATOM 126 N LEU I 517 19.972 20.784 40.532 1.00 30.77 ATOM 127 CA LEU I 517 21.164 21.221 41.228 1.00 28.57 ATOM 128 C LEU I 517 20.908 21.255 42.736 1.00 28.48 ATOM 129 O LEU I 517 19.768 21.348 43.210 1.00 27.07 ATOM 130 CB LEU I 517 21.562 22.625 40.755 1.00 26.74 ATOM 131 CG LEU I 517 21.841 22.874 39.270 1.00 26.26 ATOM 132 CD1 LEU I 517 22.097 24.342 39.029 1.00 24.78 ATOM 133 CD2 LEU I 517 23.064 22.094 38.837 1.00 27.44 ATOM 134 N ALA I 518 22.028 21.253 43.469 1.00 28.92 ATOM 135 CA ALA I 518 22.088 21.381 44.920 1.00 29.53 ATOM 136 C ALA I 518 21.015 20.609 45.684 1.00 30.37 ATOM 137 O ALA I 518 20.995 19.387 45.550 1.00 30.76 ATOM 138 CB ALA I 518 22.026 22.869 45.281 1.00 27.40 ATOM 139 N GLU I 519 20.115 21.199 46.468 1.00 30.96 ATOM 140 CA GLU I 519 19.085 20.447 47.151 1.00 31.52 ATOM 141 C GLU I 519 17.732 20.782 46.543 1.00 31.90 ATOM 142 O GLU I 519 16.736 20.857 47.267 1.00 31.67 ATOM 143 CB GLU I 519 19.108 20.796 48.621 1.00 33.15 ATOM 144 CG GLU I 519 20.329 20.234 49.311 1.00 38.70 ATOM 145 CD GLU I 519 20.653 20.825 50.684 1.00 44.44 ATOM 146 OE1 GLU I 519 19.969 21.733 51.180 1.00 45.03 ATOM 147 OE2 GLU I 519 21.640 20.364 51.262 1.00 48.26 ATOM 148 N CYS I 520 17.686 21.058 45.233 1.00 31.27 ATOM 149 CA CYS I 520 16.422 21.289 44.549 1.00 30.35 ATOM 150 C CYS I 520 15.778 19.931 44.308 1.00 32.15 ATOM 151 O CYS I 520 16.488 18.927 44.192 1.00 33.73 ATOM 152 CB CYS I 520 16.595 21.914 43.178 1.00 28.27 ATOM 153 SG CYS I 520 17.332 23.562 43.092 1.00 24.27 ATOM 154 N ILE I 521 14.468 19.813 44.168 1.00 32.71 ATOM 155 CA ILE I 521 13.851 18.537 43.859 1.00 34.73 ATOM 156 C ILE I 521 13.044 18.805 42.602 1.00 36.05 ATOM 157 O ILE I 521 12.729 19.947 42.243 1.00 34.86 ATOM 158 CB ILE I 521 12.875 18.019 44.971 1.00 35.37 ATOM 159 CG1 ILE I 521 11.810 19.062 45.304 1.00 36.54 ATOM 160 CG2 ILE I 521 13.693 17.657 46.197 1.00 35.43 ATOM 161 CD1 ILE I 521 10.663 18.599 46.208 1.00 37.45 ATOM 162 N CYS I 522 12.716 17.713 41.933 1.00 36.98 ATOM 163 CA CYS I 522 11.931 17.787 40.729 1.00 38.64 ATOM 164 C CYS I 522 10.495 17.905 41.189 1.00 40.08 ATOM 165 O CYS I 522 9.958 17.000 41.829 1.00 42.04 ATOM 166 CB CYS I 522 12.130 16.535 39.921 1.00 38.62 ATOM 167 SG CYS I 522 11.363 16.736 38.306 1.00 41.07 ATOM 168 N LEU I 523 9.875 19.050 40.982 1.00 40.82 ATOM 169 CA LEU I 523 8.508 19.223 41.422 1.00 41.81 ATOM 170 C LEU I 523 7.585 18.575 40.392 1.00 43.05 ATOM 171 O LEU I 523 7.968 18.367 39.236 1.00 43.46 ATOM 172 CB LEU I 523 8.224 20.718 41.574 1.00 40.52 ATOM 173 CG LEU I 523 9.168 21.582 42.434 1.00 40.30 ATOM 174 CD1 LEU I 523 8.682 23.023 42.367 1.00 40.37 ATOM 175 CD2 LEU I 523 9.195 21.119 43.880 1.00 39.09 ATOM 176 N GLU I 524 6.320 18.351 40.768 1.00 44.22 ATOM 177 CA GLU I 524 5.323 17.674 39.945 0.00 44.15 ATOM 178 C GLU I 524 5.250 18.178 38.510 0.00 44.45 ATOM 179 O GLU I 524 5.205 17.410 37.557 0.00 44.44 ATOM 180 CB GLU I 524 3.960 17.820 40.621 0.00 43.74 ATOM 181 CG GLU I 524 2.846 17.000 39.974 0.00 43.16 ATOM 182 CD GLU I 524 1.523 17.075 40.719 0.00 42.95 ATOM 183 OE1 GLU I 524 1.357 16.348 41.698 0.00 43.07 ATOM 184 OE2 GLU I 524 0.658 17.855 40.321 0.00 42.27 ATOM 185 N HIS I 525 5.329 19.493 38.338 1.00 45.52 ATOM 186 CA HIS I 525 5.274 20.101 37.016 1.00 44.18 ATOM 187 C HIS I 525 6.475 19.842 36.094 1.00 43.80 ATOM 188 O HIS I 525 6.558 20.498 35.051 1.00 44.97 ATOM 189 CB HIS I 525 5.052 21.628 37.173 0.00 43.63 ATOM 190 CG HIS I 525 6.174 22.586 37.606 0.00 43.11 ATOM 191 ND1 HIS I 525 6.236 23.855 37.220 0.00 42.83 ATOM 192 CD2 HIS I 525 7.240 22.370 38.458 0.00 42.82 ATOM 193 CE1 HIS I 525 7.272 24.416 37.793 0.00 42.87 ATOM 194 NE2 HIS I 525 7.865 23.520 38.535 0.00 42.67 ATOM 195 N GLY I 526 7.435 18.979 36.452 1.00 42.12 ATOM 196 CA GLY I 526 8.567 18.654 35.589 1.00 39.77 ATOM 197 C GLY I 526 9.681 19.692 35.574 1.00 37.77 ATOM 198 O GLY I 526 10.425 19.805 34.586 1.00 37.15 ATOM 199 N TYR I 527 9.812 20.447 36.674 1.00 34.94 ATOM 200 CA TYR I 527 10.874 21.436 36.803 1.00 32.38 ATOM 201 C TYR I 527 11.395 21.427 38.214 1.00 30.05 ATOM 202 O TYR I 527 10.626 21.206 39.158 1.00 29.33 ATOM 203 CB TYR I 527 10.454 22.863 36.586 1.00 34.72 ATOM 204 CG TYR I 527 10.125 23.178 35.163 1.00 37.58 ATOM 205 CD1 TYR I 527 11.154 23.489 34.291 1.00 38.41 ATOM 206 CD2 TYR I 527 8.799 23.144 34.747 1.00 40.54 ATOM 207 CE1 TYR I 527 10.851 23.764 32.961 1.00 43.15 ATOM 208 CE2 TYR I 527 8.486 23.414 33.425 1.00 44.55 ATOM 209 CZ TYR I 527 9.519 23.725 32.545 1.00 45.48 ATOM 210 OH TYR I 527 9.216 24.003 31.230 1.00 50.02 ATOM 211 N CYS I 528 12.679 21.726 38.335 1.00 27.26 ATOM 212 CA CYS I 528 13.331 21.807 39.628 1.00 25.88 ATOM 213 C CYS I 528 12.822 22.975 40.469 1.00 24.94 ATOM 214 O CYS I 528 12.445 24.035 39.931 1.00 23.18 ATOM 215 CB CYS I 528 14.823 21.931 39.381 1.00 26.46 ATOM 216 SG CYS I 528 15.512 20.518 38.468 1.00 27.41 ATOM 217 N GLY I 529 12.771 22.786 41.786 1.00 24.75 ATOM 218 CA GLY I 529 12.351 23.831 42.696 1.00 24.45 ATOM 219 C GLY I 529 12.672 23.477 44.143 1.00 25.40 ATOM 220 O GLY I 529 13.216 22.403 44.410 1.00 24.58 ATOM 221 OXT GLY I 529 12.385 24.285 45.023 1.00 25.70 TER