HEADER PROTEASE INHIBITOR 14-SEP-04 1W7Z TITLE CRYSTAL STRUCTURE OF THE FREE (UNCOMPLEXED) ECBALLIUM ELATERIUM TITLE 2 TRYPSIN INHIBITOR (EETI-II) COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN INHIBITOR II; COMPND 3 CHAIN: A, B, C, D, E, F, G, H; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 1.67 ANGSTORMS DBREF 1W7Z C 1 31 UNP P12071 ITR2_ECBEL 1 31 SEQRES 1 C 28 GLY CYS PRO ARG ILE LEU ILE ARG CYS LYS GLN ASP SER SEQRES 2 C 28 ASP CYS LEU ALA GLY CYS VAL CYS GLY PRO ASN GLY PHE SEQRES 3 C 28 CYS GLY ATOM 1 N GLY C 1 16.218 5.793 -8.195 1.00 42.87 ATOM 2 CA GLY C 1 16.744 4.654 -7.383 1.00 42.18 ATOM 3 C GLY C 1 16.154 4.609 -5.977 1.00 40.80 ATOM 4 O GLY C 1 15.928 5.652 -5.348 1.00 42.39 ATOM 5 N CYS C 2 15.929 3.413 -5.453 1.00 37.74 ATOM 6 CA CYS C 2 15.492 3.318 -4.067 1.00 35.27 ATOM 7 C CYS C 2 16.754 3.422 -3.116 1.00 32.71 ATOM 8 O CYS C 2 17.781 2.801 -3.400 1.00 33.30 ATOM 9 CB CYS C 2 14.754 1.988 -3.897 1.00 34.79 ATOM 10 SG CYS C 2 14.109 1.716 -2.311 1.00 33.84 ATOM 11 N PRO C 3 16.686 4.171 -2.007 1.00 29.49 ATOM 12 CA PRO C 3 17.785 4.149 -1.029 1.00 27.95 ATOM 13 C PRO C 3 18.014 2.694 -0.554 1.00 26.04 ATOM 14 O PRO C 3 17.045 1.942 -0.448 1.00 26.40 ATOM 15 CB PRO C 3 17.234 5.016 0.113 1.00 28.13 ATOM 16 CG PRO C 3 16.313 5.938 -0.553 1.00 29.26 ATOM 17 CD PRO C 3 15.603 5.069 -1.565 1.00 29.28 ATOM 18 N ARG C 4 19.238 2.325 -0.205 1.00 24.08 ATOM 19 CA ARG C 4 19.537 0.968 0.195 1.00 22.48 ATOM 20 C ARG C 4 19.497 0.695 1.734 1.00 21.60 ATOM 21 O ARG C 4 19.897 -0.416 2.208 1.00 20.68 ATOM 22 CB ARG C 4 20.857 0.498 -0.494 0.80 23.55 ATOM 23 CG ARG C 4 20.575 -0.004 -1.965 0.80 27.28 ATOM 24 CD ARG C 4 21.418 -1.212 -2.464 0.80 33.05 ATOM 25 NE ARG C 4 20.994 -2.638 -2.204 0.80 34.64 ATOM 26 CZ ARG C 4 19.801 -3.109 -1.864 0.80 39.98 ATOM 27 NH1 ARG C 4 18.709 -2.345 -1.665 0.80 43.30 ATOM 28 NH2 ARG C 4 19.682 -4.413 -1.689 0.80 44.74 ATOM 29 N ILE C 5 18.876 1.622 2.480 1.00 19.08 ATOM 30 CA ILE C 5 18.592 1.409 3.892 1.00 18.58 ATOM 31 C ILE C 5 17.561 0.297 3.995 1.00 18.79 ATOM 32 O ILE C 5 16.563 0.302 3.241 1.00 19.66 ATOM 33 CB ILE C 5 18.021 2.710 4.540 1.00 17.20 ATOM 34 CG1 ILE C 5 19.013 3.878 4.301 1.00 20.52 ATOM 35 CG2 ILE C 5 17.645 2.507 5.986 1.00 19.62 ATOM 36 CD1 ILE C 5 18.398 5.240 4.429 1.00 22.54 ATOM 37 N LEU C 6 17.752 -0.644 4.908 1.00 19.83 ATOM 38 CA LEU C 6 16.752 -1.728 5.069 1.00 19.52 ATOM 39 C LEU C 6 15.556 -1.186 5.859 1.00 20.83 ATOM 40 O LEU C 6 15.713 -0.719 7.005 1.00 19.29 ATOM 41 CB LEU C 6 17.342 -2.899 5.832 1.00 21.49 ATOM 42 CG LEU C 6 18.027 -3.960 5.000 1.00 26.01 ATOM 43 CD1 LEU C 6 19.217 -3.369 4.397 1.00 29.84 ATOM 44 CD2 LEU C 6 18.355 -5.151 5.807 1.00 26.42 ATOM 45 N ILE C 7 14.382 -1.205 5.230 1.00 20.47 ATOM 46 CA ILE C 7 13.143 -0.736 5.854 1.00 20.65 ATOM 47 C ILE C 7 12.096 -1.826 5.618 1.00 20.83 ATOM 48 O ILE C 7 11.843 -2.190 4.483 1.00 21.59 ATOM 49 CB ILE C 7 12.701 0.587 5.254 1.00 20.74 ATOM 50 CG1 ILE C 7 13.823 1.566 5.355 1.00 20.78 ATOM 51 CG2 ILE C 7 11.425 1.120 5.902 1.00 22.64 ATOM 52 CD1 ILE C 7 13.487 2.992 4.922 1.00 23.06 ATOM 53 N ARG C 8 11.540 -2.362 6.673 1.00 22.06 ATOM 54 CA ARG C 8 10.414 -3.300 6.539 1.00 24.93 ATOM 55 C ARG C 8 9.131 -2.548 6.117 1.00 24.95 ATOM 56 O ARG C 8 8.877 -1.446 6.547 1.00 23.97 ATOM 57 CB ARG C 8 10.187 -4.079 7.855 1.00 26.50 ATOM 58 CG ARG C 8 11.270 -5.046 8.136 1.00 31.57 ATOM 59 CD ARG C 8 10.918 -6.128 9.152 1.00 38.34 ATOM 60 NE ARG C 8 11.643 -7.357 8.837 1.00 43.94 ATOM 61 CZ ARG C 8 12.602 -7.923 9.562 1.00 48.05 ATOM 62 NH1 ARG C 8 13.032 -7.395 10.715 1.00 50.94 ATOM 63 NH2 ARG C 8 13.151 -9.057 9.111 1.00 49.37 ATOM 64 N CYS C 9 8.337 -3.192 5.274 1.00 26.00 ATOM 65 CA CYS C 9 7.164 -2.596 4.692 1.00 27.32 ATOM 66 C CYS C 9 6.045 -3.637 4.513 1.00 29.52 ATOM 67 O CYS C 9 6.310 -4.837 4.375 1.00 30.84 ATOM 68 CB CYS C 9 7.495 -2.011 3.307 1.00 27.19 ATOM 69 SG CYS C 9 8.251 -3.102 2.105 1.00 28.27 ATOM 70 N LYS C 10 4.837 -3.087 4.535 1.00 32.06 ATOM 71 CA LYS C 10 3.541 -3.749 4.186 1.00 33.87 ATOM 72 C LYS C 10 3.132 -3.432 2.772 1.00 34.00 ATOM 73 O LYS C 10 2.623 -4.299 2.047 1.00 36.09 ATOM 74 CB LYS C 10 2.410 -3.161 5.034 1.00 35.58 ATOM 75 CG LYS C 10 2.488 -3.421 6.495 1.00 37.52 ATOM 76 N GLN C 11 3.276 -2.166 2.418 1.00 33.09 ATOM 77 CA GLN C 11 2.758 -1.612 1.180 1.00 31.45 ATOM 78 C GLN C 11 3.730 -0.610 0.676 1.00 29.46 ATOM 79 O GLN C 11 4.580 -0.151 1.445 1.00 27.55 ATOM 80 CB GLN C 11 1.355 -1.032 1.450 1.00 32.43 ATOM 81 CG GLN C 11 0.428 -2.206 1.826 1.00 37.64 ATOM 82 CD GLN C 11 -1.018 -1.811 2.083 1.00 39.74 ATOM 83 OE1 GLN C 11 -1.915 -2.641 2.054 1.00 43.00 ATOM 84 NE2 GLN C 11 -1.221 -0.561 2.379 1.00 40.52 ATOM 85 N ASP C 12 3.640 -0.325 -0.615 1.00 27.50 ATOM 86 CA ASP C 12 4.531 0.567 -1.301 1.00 27.29 ATOM 87 C ASP C 12 4.672 1.950 -0.631 1.00 26.95 ATOM 88 O ASP C 12 5.767 2.484 -0.548 1.00 27.19 ATOM 89 CB ASP C 12 4.083 0.762 -2.735 1.00 27.71 ATOM 90 CG ASP C 12 4.242 -0.460 -3.595 1.00 30.30 ATOM 91 OD1 ASP C 12 4.869 -1.465 -3.173 1.00 30.55 ATOM 92 OD2 ASP C 12 3.729 -0.387 -4.754 1.00 35.10 ATOM 93 N SER C 13 3.569 2.569 -0.196 1.00 27.24 ATOM 94 CA SER C 13 3.669 3.918 0.402 1.00 28.33 ATOM 95 C SER C 13 4.468 3.953 1.721 1.00 27.97 ATOM 96 O SER C 13 4.787 5.027 2.200 1.00 27.33 ATOM 97 CB SER C 13 2.291 4.552 0.638 1.00 29.98 ATOM 98 OG SER C 13 1.591 3.759 1.515 1.00 32.91 ATOM 99 N ASP C 14 4.830 2.798 2.284 1.00 26.90 ATOM 100 CA ASP C 14 5.645 2.775 3.498 1.00 26.79 ATOM 101 C ASP C 14 7.076 3.170 3.192 1.00 24.71 ATOM 102 O ASP C 14 7.872 3.440 4.091 1.00 25.05 ATOM 103 CB ASP C 14 5.720 1.369 4.064 1.00 26.21 ATOM 104 CG ASP C 14 4.401 0.852 4.597 1.00 31.93 ATOM 105 OD1 ASP C 14 3.483 1.675 4.855 1.00 35.14 ATOM 106 OD2 ASP C 14 4.326 -0.403 4.774 1.00 34.79 ATOM 107 N CYS C 15 7.429 3.100 1.924 1.00 23.96 ATOM 108 CA CYS C 15 8.795 3.185 1.508 1.00 23.72 ATOM 109 C CYS C 15 9.170 4.595 1.118 1.00 23.81 ATOM 110 O CYS C 15 8.281 5.437 0.848 1.00 26.06 ATOM 111 CB CYS C 15 9.022 2.242 0.326 1.00 23.38 ATOM 112 SG CYS C 15 8.810 0.490 0.836 1.00 24.92 ATOM 113 N LEU C 16 10.463 4.853 1.015 1.00 22.28 ATOM 114 CA LEU C 16 10.937 6.148 0.560 1.00 22.29 ATOM 115 C LEU C 16 10.748 6.280 -0.940 1.00 22.71 ATOM 116 O LEU C 16 10.371 5.317 -1.612 1.00 24.39 ATOM 117 CB LEU C 16 12.383 6.361 0.981 1.00 21.73 ATOM 118 CG LEU C 16 12.706 6.336 2.471 1.00 23.01 ATOM 119 CD1 LEU C 16 14.198 6.297 2.697 1.00 23.78 ATOM 120 CD2 LEU C 16 12.151 7.558 3.066 1.00 23.07 ATOM 121 N ALA C 17 10.956 7.496 -1.437 1.00 22.92 ATOM 122 CA ALA C 17 10.799 7.824 -2.862 1.00 24.74 ATOM 123 C ALA C 17 11.666 6.936 -3.759 1.00 27.07 ATOM 124 O ALA C 17 12.838 6.652 -3.467 1.00 28.36 ATOM 125 CB ALA C 17 11.049 9.285 -3.104 1.00 25.41 ATOM 126 N GLY C 18 11.039 6.416 -4.808 1.00 28.16 ATOM 127 CA GLY C 18 11.726 5.502 -5.721 1.00 28.72 ATOM 128 C GLY C 18 11.636 4.051 -5.392 1.00 28.74 ATOM 129 O GLY C 18 12.241 3.218 -6.093 1.00 29.97 ATOM 130 N CYS C 19 10.919 3.711 -4.327 1.00 28.17 ATOM 131 CA CYS C 19 10.859 2.353 -3.871 1.00 28.01 ATOM 132 C CYS C 19 9.485 1.743 -3.901 1.00 28.05 ATOM 133 O CYS C 19 8.468 2.420 -3.860 1.00 28.02 ATOM 134 CB CYS C 19 11.284 2.254 -2.425 1.00 27.97 ATOM 135 SG CYS C 19 12.781 3.148 -2.059 1.00 31.51 ATOM 136 N VAL C 20 9.489 0.434 -3.885 1.00 28.18 ATOM 137 CA VAL C 20 8.260 -0.332 -3.694 1.00 29.06 ATOM 138 C VAL C 20 8.498 -1.369 -2.621 1.00 28.92 ATOM 139 O VAL C 20 9.661 -1.641 -2.241 1.00 28.66 ATOM 140 CB VAL C 20 7.824 -1.079 -5.008 1.00 30.65 ATOM 141 CG1 VAL C 20 7.387 -0.122 -6.061 1.00 32.29 ATOM 142 CG2 VAL C 20 8.969 -1.958 -5.492 1.00 30.87 ATOM 143 N CYS C 21 7.419 -1.989 -2.151 1.00 27.99 ATOM 144 CA CYS C 21 7.523 -3.020 -1.148 1.00 30.21 ATOM 145 C CYS C 21 7.711 -4.336 -1.849 1.00 31.80 ATOM 146 O CYS C 21 6.800 -4.811 -2.482 1.00 33.66 ATOM 147 CB CYS C 21 6.287 -3.080 -0.293 1.00 31.54 ATOM 148 SG CYS C 21 6.568 -3.996 1.228 1.00 33.83 ATOM 149 N GLY C 22 8.901 -4.910 -1.749 1.00 32.62 ATOM 150 CA GLY C 22 9.248 -6.078 -2.541 1.00 35.09 ATOM 151 C GLY C 22 8.687 -7.362 -2.003 1.00 36.75 ATOM 152 O GLY C 22 8.102 -7.397 -0.921 1.00 34.52 ATOM 153 N PRO C 23 8.847 -8.451 -2.787 1.00 39.36 ATOM 154 CA PRO C 23 8.443 -9.759 -2.349 1.00 41.08 ATOM 155 C PRO C 23 8.837 -10.087 -0.910 1.00 41.44 ATOM 156 O PRO C 23 7.969 -10.561 -0.148 1.00 44.03 ATOM 157 CB PRO C 23 9.144 -10.710 -3.340 1.00 41.28 ATOM 158 CG PRO C 23 9.597 -9.927 -4.468 1.00 41.02 ATOM 159 CD PRO C 23 9.350 -8.454 -4.171 1.00 40.41 ATOM 160 N ASN C 24 10.095 -9.806 -0.533 1.00 40.86 ATOM 161 CA ASN C 24 10.624 -10.182 0.814 1.00 40.11 ATOM 162 C ASN C 24 10.278 -9.257 2.000 1.00 38.77 ATOM 163 O ASN C 24 10.801 -9.429 3.129 1.00 38.46 ATOM 164 CB ASN C 24 12.147 -10.420 0.753 1.00 41.15 ATOM 165 N GLY C 25 9.386 -8.301 1.769 1.00 35.19 ATOM 166 CA GLY C 25 8.855 -7.481 2.859 1.00 33.19 ATOM 167 C GLY C 25 9.821 -6.345 3.241 1.00 29.87 ATOM 168 O GLY C 25 9.758 -5.805 4.325 1.00 28.72 ATOM 169 N PHE C 26 10.705 -6.030 2.345 1.00 27.79 ATOM 170 CA PHE C 26 11.594 -4.863 2.468 1.00 26.10 ATOM 171 C PHE C 26 11.385 -3.925 1.317 1.00 25.27 ATOM 172 O PHE C 26 11.092 -4.354 0.196 1.00 25.62 ATOM 173 CB PHE C 26 13.058 -5.344 2.422 1.00 26.87 ATOM 174 CG PHE C 26 13.494 -5.983 3.701 1.00 30.69 ATOM 175 CD1 PHE C 26 13.553 -7.371 3.816 1.00 30.66 ATOM 176 CD2 PHE C 26 13.838 -5.214 4.779 1.00 27.91 ATOM 177 CE1 PHE C 26 13.920 -7.962 4.991 1.00 32.74 ATOM 178 CE2 PHE C 26 14.177 -5.787 5.970 1.00 32.80 ATOM 179 CZ PHE C 26 14.245 -7.172 6.084 1.00 32.18 ATOM 180 N CYS C 27 11.665 -2.633 1.536 1.00 23.40 ATOM 181 CA CYS C 27 11.623 -1.658 0.487 1.00 24.10 ATOM 182 C CYS C 27 12.728 -1.873 -0.475 1.00 25.00 ATOM 183 O CYS C 27 13.873 -2.119 -0.065 1.00 25.89 ATOM 184 CB CYS C 27 11.761 -0.251 1.066 1.00 23.23 ATOM 185 SG CYS C 27 10.378 0.140 2.152 1.00 22.58 ATOM 186 N GLY C 28 12.407 -1.761 -1.759 1.00 26.45 ATOM 187 CA GLY C 28 13.421 -1.851 -2.777 1.00 29.25 ATOM 188 C GLY C 28 13.045 -1.242 -4.100 1.00 31.67 ATOM 189 O GLY C 28 11.969 -0.713 -4.279 1.00 29.89 ATOM 190 NA NA C1032 6.425 6.305 1.650 1.00 25.58 TER