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; COMPND 5 MOL_ID: 1; COMPND 6 TRYPSIN INHIBITOR II; COMPND 7 CHAIN: A, B, C, D, E, F, G, H; COMPND 8 ENGINEERED: YES; COMPND 9 MOL_ID: 1; COMPND 10 TRYPSIN INHIBITOR II; COMPND 11 CHAIN: A, B, C, D, E, F, G, H; COMPND 12 ENGINEERED: YES; COMPND 13 MOL_ID: 1; COMPND 14 TRYPSIN INHIBITOR II; COMPND 15 CHAIN: A, B, C, D, E, F, G, H; COMPND 16 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 1.67 ANGSTORMS DBREF 1W7Z B 1 31 UNP P12071 ITR2_ECBEL 1 31 DBREF 1W7Z D 1 31 UNP P12071 ITR2_ECBEL 1 31 DBREF 1W7Z F 1 31 UNP P12071 ITR2_ECBEL 1 31 DBREF 1W7Z G 1 31 UNP P12071 ITR2_ECBEL 1 31 SEQRES 1 G 28 GLY CYS PRO ARG ILE LEU ILE ARG CYS LYS GLN ASP SER SEQRES 2 G 28 ASP CYS LEU ALA GLY CYS VAL CYS GLY PRO ASN GLY PHE SEQRES 3 G 28 CYS GLY ATOM 1 C FMT B1032 21.218 21.324 12.693 1.00 47.81 ATOM 2 O1 FMT B1032 22.107 20.491 12.413 1.00 46.37 ATOM 3 O2 FMT B1032 20.620 21.282 13.782 1.00 49.77 TER ATOM 1 C FMT D1032 18.661 20.921 3.089 1.00 45.63 ATOM 2 O1 FMT D1032 17.846 20.070 2.734 1.00 45.03 ATOM 3 O2 FMT D1032 18.292 22.083 3.294 1.00 45.98 TER ATOM 1 C FMT F1032 9.230 19.056 10.904 1.00 51.46 ATOM 2 O1 FMT F1032 9.666 18.341 11.841 1.00 52.15 ATOM 3 O2 FMT F1032 8.645 20.141 11.048 1.00 50.48 TER ATOM 1 N GLY G 1 12.750 22.531 18.705 1.00 38.55 ATOM 2 CA GLY G 1 13.706 23.566 18.272 1.00 37.62 ATOM 3 C GLY G 1 13.792 23.808 16.777 1.00 37.14 ATOM 4 O GLY G 1 13.192 23.096 15.942 1.00 35.42 ATOM 5 N CYS G 2 14.546 24.836 16.443 1.00 37.33 ATOM 6 CA CYS G 2 14.761 25.214 15.046 1.00 38.14 ATOM 7 C CYS G 2 16.153 24.811 14.587 1.00 39.04 ATOM 8 O CYS G 2 17.141 25.260 15.119 1.00 40.29 ATOM 9 CB CYS G 2 14.567 26.727 14.877 1.00 37.82 ATOM 10 SG CYS G 2 14.419 27.272 13.168 1.00 38.13 ATOM 11 N PRO G 3 16.236 23.933 13.598 1.00 40.10 ATOM 12 CA PRO G 3 17.548 23.492 13.181 1.00 41.36 ATOM 13 C PRO G 3 18.302 24.608 12.457 1.00 42.62 ATOM 14 O PRO G 3 17.672 25.528 11.907 1.00 41.48 ATOM 15 CB PRO G 3 17.232 22.343 12.225 1.00 41.35 ATOM 16 CG PRO G 3 15.994 22.728 11.621 1.00 40.31 ATOM 17 CD PRO G 3 15.184 23.321 12.781 1.00 39.71 ATOM 18 N ARG G 4 19.627 24.529 12.480 1.00 44.62 ATOM 19 CA ARG G 4 20.461 25.543 11.840 1.00 46.71 ATOM 20 C ARG G 4 20.592 25.202 10.365 1.00 47.70 ATOM 21 O ARG G 4 21.704 24.977 9.861 1.00 49.90 ATOM 22 CB ARG G 4 21.839 25.640 12.527 1.00 47.47 ATOM 23 N ILE G 5 19.459 25.162 9.667 1.00 47.80 ATOM 24 CA ILE G 5 19.452 25.065 8.213 1.00 48.56 ATOM 25 C ILE G 5 18.834 26.347 7.626 1.00 48.39 ATOM 26 O ILE G 5 17.853 26.879 8.149 1.00 47.23 ATOM 27 CB ILE G 5 18.741 23.770 7.672 1.00 48.85 ATOM 28 CG1 ILE G 5 18.000 24.099 6.376 1.00 50.12 ATOM 29 CG2 ILE G 5 17.848 23.179 8.696 1.00 49.36 ATOM 30 CD1 ILE G 5 17.026 23.104 5.898 1.00 51.45 ATOM 31 N LEU G 6 19.417 26.817 6.523 1.00 48.42 ATOM 32 CA LEU G 6 18.939 28.006 5.818 1.00 48.95 ATOM 33 C LEU G 6 17.703 27.678 5.028 1.00 48.57 ATOM 34 O LEU G 6 17.785 26.954 4.017 1.00 49.37 ATOM 35 CB LEU G 6 19.992 28.545 4.849 1.00 49.27 ATOM 36 CG LEU G 6 20.935 29.593 5.416 1.00 51.82 ATOM 37 CD1 LEU G 6 21.653 29.077 6.660 1.00 52.39 ATOM 38 CD2 LEU G 6 21.929 30.017 4.299 1.00 52.62 ATOM 39 N ILE G 7 16.565 28.177 5.495 1.00 47.29 ATOM 40 CA ILE G 7 15.289 27.962 4.840 1.00 47.42 ATOM 41 C ILE G 7 14.625 29.296 4.649 1.00 46.94 ATOM 42 O ILE G 7 14.232 29.979 5.609 1.00 46.40 ATOM 43 CB ILE G 7 14.342 27.031 5.630 1.00 47.48 ATOM 44 CG1 ILE G 7 14.862 25.601 5.614 1.00 49.23 ATOM 45 CG2 ILE G 7 12.929 27.072 5.037 1.00 47.01 ATOM 46 CD1 ILE G 7 14.290 24.718 6.722 1.00 49.39 ATOM 47 N ARG G 8 14.528 29.687 3.389 1.00 46.84 ATOM 48 CA ARG G 8 13.831 30.900 3.039 1.00 46.37 ATOM 49 C ARG G 8 12.378 30.650 3.351 1.00 44.64 ATOM 50 O ARG G 8 11.926 29.508 3.293 1.00 44.48 ATOM 51 CB ARG G 8 14.101 31.274 1.582 1.00 47.66 ATOM 52 CG ARG G 8 15.532 31.729 1.409 1.00 51.25 ATOM 53 CD ARG G 8 15.945 31.987 -0.005 1.00 55.22 ATOM 54 NE ARG G 8 16.559 33.319 -0.142 1.00 59.28 ATOM 55 CZ ARG G 8 17.838 33.567 -0.444 1.00 61.72 ATOM 56 NH1 ARG G 8 18.717 32.581 -0.614 1.00 63.52 ATOM 57 NH2 ARG G 8 18.250 34.830 -0.565 1.00 62.01 ATOM 58 N CYS G 9 11.674 31.708 3.753 1.00 41.65 ATOM 59 CA CYS G 9 10.291 31.644 4.146 1.00 41.39 ATOM 60 C CYS G 9 9.611 32.974 3.863 1.00 41.13 ATOM 61 O CYS G 9 10.222 34.033 3.840 1.00 40.69 ATOM 62 CB CYS G 9 10.089 31.354 5.645 1.00 41.07 ATOM 63 SG CYS G 9 10.902 32.534 6.774 1.00 39.47 ATOM 64 N LYS G 10 8.318 32.899 3.641 1.00 41.45 ATOM 65 CA LYS G 10 7.519 34.086 3.563 1.00 41.74 ATOM 66 C LYS G 10 6.638 34.122 4.769 1.00 43.05 ATOM 67 O LYS G 10 6.370 35.202 5.298 1.00 43.68 ATOM 68 CB LYS G 10 6.688 34.087 2.273 1.00 41.01 ATOM 69 CG LYS G 10 5.606 35.118 2.303 1.00 39.23 ATOM 70 CD LYS G 10 4.846 35.150 0.978 1.00 37.62 ATOM 71 CE LYS G 10 3.811 36.200 1.075 1.00 33.94 ATOM 72 NZ LYS G 10 2.983 36.285 -0.097 1.00 32.94 ATOM 73 N GLN G 11 6.165 32.943 5.189 1.00 44.55 ATOM 74 CA GLN G 11 5.369 32.779 6.409 1.00 45.57 ATOM 75 C GLN G 11 5.912 31.625 7.285 1.00 45.03 ATOM 76 O GLN G 11 6.751 30.841 6.855 1.00 44.96 ATOM 77 CB GLN G 11 3.917 32.490 6.043 1.00 46.20 ATOM 78 CG GLN G 11 3.680 31.134 5.405 1.00 50.54 ATOM 79 CD GLN G 11 2.463 31.087 4.484 1.00 54.77 ATOM 80 OE1 GLN G 11 1.578 30.214 4.638 1.00 57.72 ATOM 81 NE2 GLN G 11 2.415 32.014 3.506 1.00 55.53 ATOM 82 N ASP G 12 5.403 31.529 8.498 1.00 45.11 ATOM 83 CA ASP G 12 5.829 30.493 9.464 1.00 45.91 ATOM 84 C ASP G 12 5.604 29.034 8.997 1.00 45.37 ATOM 85 O ASP G 12 6.463 28.172 9.277 1.00 45.46 ATOM 86 CB ASP G 12 5.155 30.705 10.837 1.00 46.60 ATOM 87 CG ASP G 12 5.578 31.996 11.543 1.00 47.42 ATOM 88 OD1 ASP G 12 6.529 32.706 11.147 1.00 49.38 ATOM 89 OD2 ASP G 12 4.969 32.302 12.573 1.00 48.48 ATOM 90 N SER G 13 4.514 28.744 8.257 1.00 44.29 ATOM 91 CA SER G 13 4.262 27.377 7.743 1.00 43.47 ATOM 92 C SER G 13 5.281 26.935 6.690 1.00 42.76 ATOM 93 O SER G 13 5.314 25.744 6.323 1.00 44.25 ATOM 94 CB SER G 13 2.863 27.212 7.165 1.00 44.28 ATOM 95 OG SER G 13 2.671 27.988 5.982 1.00 44.68 ATOM 96 N ASP G 14 6.102 27.883 6.215 1.00 41.16 ATOM 97 CA ASP G 14 7.236 27.551 5.362 1.00 40.84 ATOM 98 C ASP G 14 8.316 26.935 6.179 1.00 39.26 ATOM 99 O ASP G 14 9.272 26.414 5.617 1.00 40.44 ATOM 100 CB ASP G 14 7.785 28.791 4.657 1.00 41.04 ATOM 101 CG ASP G 14 6.844 29.320 3.594 1.00 42.51 ATOM 102 OD1 ASP G 14 5.928 28.548 3.174 1.00 41.54 ATOM 103 OD2 ASP G 14 7.044 30.495 3.167 1.00 43.13 ATOM 104 N CYS G 15 8.184 27.024 7.503 1.00 39.02 ATOM 105 CA CYS G 15 9.248 26.694 8.419 1.00 37.94 ATOM 106 C CYS G 15 8.948 25.416 9.161 1.00 37.21 ATOM 107 O CYS G 15 7.798 24.997 9.259 1.00 38.81 ATOM 108 CB CYS G 15 9.481 27.810 9.447 1.00 37.56 ATOM 109 SG CYS G 15 9.957 29.408 8.781 1.00 37.61 ATOM 110 N LEU G 16 10.007 24.812 9.667 1.00 35.64 ATOM 111 CA LEU G 16 9.933 23.611 10.483 1.00 36.43 ATOM 112 C LEU G 16 9.309 23.930 11.831 1.00 36.72 ATOM 113 O LEU G 16 9.316 25.104 12.277 1.00 35.03 ATOM 114 CB LEU G 16 11.335 23.010 10.630 1.00 37.04 ATOM 115 CG LEU G 16 11.978 22.380 9.377 1.00 37.89 ATOM 116 CD1 LEU G 16 13.453 22.236 9.492 1.00 40.49 ATOM 117 CD2 LEU G 16 11.420 21.006 9.115 1.00 40.14 ATOM 118 N ALA G 17 8.740 22.919 12.497 1.00 36.90 ATOM 119 CA ALA G 17 8.248 23.116 13.872 1.00 37.58 ATOM 120 C ALA G 17 9.385 23.673 14.691 1.00 37.18 ATOM 121 O ALA G 17 10.540 23.307 14.488 1.00 37.61 ATOM 122 CB ALA G 17 7.761 21.838 14.485 1.00 38.12 ATOM 123 N GLY G 18 9.058 24.581 15.595 1.00 36.95 ATOM 124 CA GLY G 18 10.037 25.254 16.407 1.00 36.51 ATOM 125 C GLY G 18 10.686 26.465 15.759 1.00 36.88 ATOM 126 O GLY G 18 11.489 27.147 16.396 1.00 35.74 ATOM 127 N CYS G 19 10.376 26.725 14.480 1.00 37.16 ATOM 128 CA CYS G 19 10.906 27.912 13.802 1.00 36.48 ATOM 129 C CYS G 19 9.815 28.967 13.601 1.00 36.71 ATOM 130 O CYS G 19 8.622 28.648 13.551 1.00 36.99 ATOM 131 CB CYS G 19 11.493 27.540 12.443 1.00 35.83 ATOM 132 SG CYS G 19 12.767 26.283 12.539 1.00 37.22 ATOM 133 N VAL G 20 10.241 30.211 13.490 1.00 36.93 ATOM 134 CA VAL G 20 9.360 31.292 13.004 1.00 37.83 ATOM 135 C VAL G 20 10.025 31.888 11.790 1.00 37.88 ATOM 136 O VAL G 20 11.244 31.782 11.622 1.00 37.70 ATOM 137 CB VAL G 20 9.172 32.447 14.038 1.00 38.18 ATOM 138 CG1 VAL G 20 8.494 31.946 15.319 1.00 39.22 ATOM 139 CG2 VAL G 20 10.510 33.093 14.364 1.00 38.50 ATOM 140 N CYS G 21 9.245 32.578 10.968 1.00 38.73 ATOM 141 CA CYS G 21 9.830 33.308 9.843 1.00 38.50 ATOM 142 C CYS G 21 10.404 34.657 10.301 1.00 38.77 ATOM 143 O CYS G 21 9.683 35.511 10.794 1.00 39.51 ATOM 144 CB CYS G 21 8.801 33.456 8.725 1.00 39.19 ATOM 145 SG CYS G 21 9.567 34.025 7.219 1.00 39.62 ATOM 146 N GLY G 22 11.715 34.830 10.164 1.00 38.42 ATOM 147 CA GLY G 22 12.388 36.017 10.630 1.00 38.81 ATOM 148 C GLY G 22 12.097 37.258 9.811 1.00 39.25 ATOM 149 O GLY G 22 11.481 37.185 8.756 1.00 38.50 ATOM 150 N PRO G 23 12.546 38.412 10.306 1.00 40.31 ATOM 151 CA PRO G 23 12.340 39.648 9.583 1.00 40.48 ATOM 152 C PRO G 23 13.128 39.700 8.259 1.00 40.22 ATOM 153 O PRO G 23 12.743 40.450 7.360 1.00 41.47 ATOM 154 CB PRO G 23 12.772 40.716 10.599 1.00 40.30 ATOM 155 CG PRO G 23 13.689 40.077 11.507 1.00 40.89 ATOM 156 CD PRO G 23 13.304 38.619 11.558 1.00 40.63 ATOM 157 N ASN G 24 14.155 38.881 8.085 1.00 39.29 ATOM 158 CA ASN G 24 14.873 38.859 6.817 1.00 39.64 ATOM 159 C ASN G 24 14.445 37.726 5.870 1.00 37.96 ATOM 160 O ASN G 24 15.118 37.468 4.856 1.00 38.37 ATOM 161 CB ASN G 24 16.380 38.893 7.067 1.00 40.70 ATOM 162 CG ASN G 24 16.809 40.121 7.971 1.00 44.66 ATOM 163 OD1 ASN G 24 17.218 39.947 9.129 1.00 47.89 ATOM 164 ND2 ASN G 24 16.683 41.354 7.433 1.00 47.75 ATOM 165 N GLY G 25 13.329 37.079 6.191 1.00 35.34 ATOM 166 CA GLY G 25 12.731 36.031 5.356 1.00 34.68 ATOM 167 C GLY G 25 13.395 34.688 5.426 1.00 34.20 ATOM 168 O GLY G 25 13.375 33.928 4.450 1.00 33.48 ATOM 169 N PHE G 26 14.009 34.387 6.569 1.00 33.08 ATOM 170 CA PHE G 26 14.606 33.082 6.788 1.00 33.29 ATOM 171 C PHE G 26 14.016 32.561 8.061 1.00 32.81 ATOM 172 O PHE G 26 13.686 33.356 8.958 1.00 31.93 ATOM 173 CB PHE G 26 16.118 33.183 6.875 1.00 34.19 ATOM 174 CG PHE G 26 16.773 33.341 5.569 1.00 37.64 ATOM 175 CD1 PHE G 26 16.935 34.628 5.010 1.00 41.50 ATOM 176 CD2 PHE G 26 17.231 32.230 4.873 1.00 38.99 ATOM 177 CE1 PHE G 26 17.542 34.786 3.783 1.00 38.44 ATOM 178 CE2 PHE G 26 17.844 32.382 3.631 1.00 38.41 ATOM 179 CZ PHE G 26 17.993 33.656 3.084 1.00 39.49 ATOM 180 N CYS G 27 13.865 31.240 8.145 1.00 32.08 ATOM 181 CA CYS G 27 13.349 30.609 9.335 1.00 32.37 ATOM 182 C CYS G 27 14.434 30.664 10.365 1.00 31.55 ATOM 183 O CYS G 27 15.632 30.606 10.032 1.00 30.11 ATOM 184 CB CYS G 27 12.925 29.150 9.090 1.00 32.53 ATOM 185 SG CYS G 27 11.638 29.005 7.827 1.00 35.96 ATOM 186 N GLY G 28 14.005 30.766 11.605 1.00 32.19 ATOM 187 CA GLY G 28 14.907 30.815 12.733 1.00 34.45 ATOM 188 C GLY G 28 14.156 30.638 14.038 1.00 35.84 ATOM 189 O GLY G 28 12.933 30.535 14.085 1.00 35.31 TER