HEADER TOXIN 31-DEC-69 6YEW TITLE Morganella morganii TcdA4 in complex with porcine mucosa heparin COMPND MOL_ID: 1; COMPND 2 MOLECULE: Insecticidal toxin protein; COMPND 3 CHAIN: A, B, C, D, E; COMPND 4 ENGINEERED: YES; EXPDTA ELECTRON MICROSCOPY DBREF 6YEW E 1 2469 PDB 6YEW 6YEW 1 2469 SEQRES 1 E 200 LEU LYS VAL VAL SER GLY TYR HIS ASP THR VAL ASN ILE SEQRES 2 E 200 ASN GLN GLY ASN THR TRP PHE ILE GLY THR SER GLN THR SEQRES 3 E 200 GLU PRO LYS LYS TYR TYR TRP ARG LYS ALA ASP HIS SER SEQRES 4 E 200 LYS CYS GLN ASN GLY ARG PHE ALA ALA ASN ALA TRP SER SEQRES 5 E 200 ASP TRP LYS GLU ILE THR CYS ALA VAL ASN PRO TYR GLY SEQRES 6 E 200 ASP MET VAL ARG PRO VAL ILE PHE HIS SER ARG LEU TYR SEQRES 7 E 200 LEU LEU TRP ILE GLU LYS GLN VAL GLN LYS ASP ASN THR SEQRES 8 E 200 GLY LYS ASP THR ALA SER PHE THR LEU LYS LEU THR HIS SEQRES 9 E 200 VAL LYS TYR ASP GLY SER TRP ALA SER PRO PHE SER TYR SEQRES 10 E 200 ASP ILE THR GLU LYS ASN ILE SER GLY TRP LYS LYS THR SEQRES 11 E 200 GLY LEU TYR CYS ALA ALA SER GLN GLU ASP ASN SER LEU SEQRES 12 E 200 LEU ILE ALA TRP TYR GLN ILE GLU LYS GLU THR GLN PRO SEQRES 13 E 200 ASN SER PHE GLY LEU HIS ILE GLN PRO ASP MET SER CYS SEQRES 14 E 200 LYS LYS GLU PRO ASN ILE ALA GLY ILE LEU ALA THR VAL SEQRES 15 E 200 THR HIS GLN LEU ASP THR GLU THR THR VAL ARG VAL ASN SEQRES 16 E 200 THR LEU LEU ASN ARG SEQRES 1 E 31 ASP PRO VAL GLN LYS VAL ILE SER LEU TYR THR THR PRO SEQRES 2 E 31 ASP GLY ALA GLN TYR MET GLU TRP ASP GLY TYR ARG THR SEQRES 3 E 31 ARG LEU ASN THR LEU ATOM 1 N ASP E1540 242.828 163.845 281.668 1.00 89.54 ATOM 2 CA ASP E1540 242.964 165.189 282.215 1.00 89.54 ATOM 3 C ASP E1540 244.169 165.927 281.644 1.00 89.54 ATOM 4 O ASP E1540 245.242 165.942 282.261 1.00 89.54 ATOM 5 CB ASP E1540 243.076 165.135 283.736 1.00 89.54 ATOM 6 CG ASP E1540 243.169 166.507 284.355 1.00 89.54 ATOM 7 OD1 ASP E1540 242.336 167.370 284.007 1.00 89.54 ATOM 8 OD2 ASP E1540 244.078 166.727 285.183 1.00 89.54 ATOM 9 N PRO E1541 244.034 166.550 280.479 1.00 87.99 ATOM 10 CA PRO E1541 245.114 167.403 279.962 1.00 87.99 ATOM 11 C PRO E1541 245.286 168.656 280.799 1.00 87.99 ATOM 12 O PRO E1541 244.422 169.538 280.793 1.00 87.99 ATOM 13 CB PRO E1541 244.651 167.741 278.541 1.00 87.99 ATOM 14 CG PRO E1541 243.651 166.668 278.202 1.00 87.99 ATOM 15 CD PRO E1541 242.968 166.342 279.490 1.00 87.99 ATOM 16 N VAL E1542 246.402 168.753 281.510 1.00 78.90 ATOM 17 CA VAL E1542 246.551 169.728 282.583 1.00 78.90 ATOM 18 C VAL E1542 247.427 170.884 282.112 1.00 78.90 ATOM 19 O VAL E1542 248.378 170.690 281.349 1.00 78.90 ATOM 20 CB VAL E1542 247.127 169.068 283.847 1.00 78.90 ATOM 21 CG1 VAL E1542 248.613 168.747 283.683 1.00 78.90 ATOM 22 CG2 VAL E1542 246.875 169.931 285.071 1.00 78.90 ATOM 23 N GLN E1543 247.067 172.092 282.540 1.00 62.36 ATOM 24 CA GLN E1543 247.928 173.272 282.485 1.00 62.36 ATOM 25 C GLN E1543 248.448 173.533 281.070 1.00 62.36 ATOM 26 O GLN E1543 249.636 173.757 280.841 1.00 62.36 ATOM 27 CB GLN E1543 249.084 173.148 283.484 1.00 62.36 ATOM 28 CG GLN E1543 248.657 172.950 284.945 1.00 62.36 ATOM 29 CD GLN E1543 248.100 174.207 285.598 1.00 62.36 ATOM 30 OE1 GLN E1543 248.613 175.309 285.401 1.00 62.36 ATOM 31 NE2 GLN E1543 247.049 174.041 286.392 1.00 62.36 ATOM 32 N LYS E1544 247.523 173.510 280.117 1.00 49.79 ATOM 33 CA LYS E1544 247.774 174.022 278.774 1.00 49.79 ATOM 34 C LYS E1544 247.229 175.447 278.746 1.00 49.79 ATOM 35 O LYS E1544 246.142 175.725 278.248 1.00 49.79 ATOM 36 CB LYS E1544 247.114 173.131 277.736 1.00 49.79 ATOM 37 CG LYS E1544 247.439 173.487 276.316 1.00 49.79 ATOM 38 CD LYS E1544 246.652 172.618 275.354 1.00 49.79 ATOM 39 CE LYS E1544 247.169 171.197 275.327 1.00 49.79 ATOM 40 NZ LYS E1544 248.527 171.118 274.716 1.00 49.79 ATOM 41 N VAL E1545 247.996 176.355 279.327 1.00 41.34 ATOM 42 CA VAL E1545 247.501 177.692 279.621 1.00 41.34 ATOM 43 C VAL E1545 247.840 178.633 278.475 1.00 41.34 ATOM 44 O VAL E1545 248.928 178.570 277.897 1.00 41.34 ATOM 45 CB VAL E1545 248.078 178.196 280.951 1.00 41.34 ATOM 46 CG1 VAL E1545 249.595 178.092 280.949 1.00 41.34 ATOM 47 CG2 VAL E1545 247.635 179.615 281.229 1.00 41.34 ATOM 48 N ILE E1546 246.903 179.509 278.153 1.00 28.37 ATOM 49 CA ILE E1546 247.039 180.500 277.100 1.00 28.37 ATOM 50 C ILE E1546 246.609 181.844 277.652 1.00 28.37 ATOM 51 O ILE E1546 245.452 182.022 278.036 1.00 28.37 ATOM 52 CB ILE E1546 246.205 180.092 275.876 1.00 28.37 ATOM 53 CG1 ILE E1546 246.019 181.250 274.912 1.00 28.37 ATOM 54 CG2 ILE E1546 244.927 179.430 276.294 1.00 28.37 ATOM 55 CD1 ILE E1546 245.421 180.792 273.631 1.00 28.37 ATOM 56 N SER E1547 247.539 182.787 277.705 1.00 25.25 ATOM 57 CA SER E1547 247.332 183.982 278.499 1.00 25.25 ATOM 58 C SER E1547 247.591 185.214 277.656 1.00 25.25 ATOM 59 O SER E1547 248.214 185.142 276.601 1.00 25.25 ATOM 60 CB SER E1547 248.234 183.977 279.723 1.00 25.25 ATOM 61 OG SER E1547 249.578 184.139 279.338 1.00 25.25 ATOM 62 N LEU E1548 247.106 186.348 278.138 1.00 23.51 ATOM 63 CA LEU E1548 247.261 187.624 277.461 1.00 23.51 ATOM 64 C LEU E1548 248.117 188.539 278.315 1.00 23.51 ATOM 65 O LEU E1548 247.957 188.586 279.534 1.00 23.51 ATOM 66 CB LEU E1548 245.920 188.282 277.222 1.00 23.51 ATOM 67 CG LEU E1548 244.876 187.421 276.537 1.00 23.51 ATOM 68 CD1 LEU E1548 243.564 188.101 276.653 1.00 23.51 ATOM 69 CD2 LEU E1548 245.216 187.218 275.099 1.00 23.51 ATOM 70 N TYR E1549 249.012 189.280 277.677 1.00 24.42 ATOM 71 CA TYR E1549 249.899 190.169 278.401 1.00 24.42 ATOM 72 C TYR E1549 249.896 191.531 277.745 1.00 24.42 ATOM 73 O TYR E1549 249.406 191.702 276.634 1.00 24.42 ATOM 74 CB TYR E1549 251.319 189.639 278.435 1.00 24.42 ATOM 75 CG TYR E1549 251.536 188.548 279.433 1.00 24.42 ATOM 76 CD1 TYR E1549 251.742 188.842 280.763 1.00 24.42 ATOM 77 CD2 TYR E1549 251.540 187.220 279.045 1.00 24.42 ATOM 78 CE1 TYR E1549 251.943 187.849 281.676 1.00 24.42 ATOM 79 CE2 TYR E1549 251.739 186.223 279.952 1.00 24.42 ATOM 80 CZ TYR E1549 251.941 186.542 281.266 1.00 24.42 ATOM 81 OH TYR E1549 252.143 185.551 282.191 1.00 24.42 ATOM 82 N THR E1550 250.453 192.503 278.451 1.00 23.84 ATOM 83 CA THR E1550 250.626 193.847 277.931 1.00 23.84 ATOM 84 C THR E1550 251.928 194.404 278.465 1.00 23.84 ATOM 85 O THR E1550 252.037 194.669 279.662 1.00 23.84 ATOM 86 CB THR E1550 249.475 194.752 278.344 1.00 23.84 ATOM 87 OG1 THR E1550 248.237 194.083 278.093 1.00 23.84 ATOM 88 CG2 THR E1550 249.506 196.023 277.551 1.00 23.84 ATOM 89 N THR E1551 252.901 194.598 277.590 1.00 25.49 ATOM 90 CA THR E1551 254.191 195.067 278.047 1.00 25.49 ATOM 91 C THR E1551 254.047 196.473 278.605 1.00 25.49 ATOM 92 O THR E1551 253.118 197.191 278.247 1.00 25.49 ATOM 93 CB THR E1551 255.200 195.076 276.914 1.00 25.49 ATOM 94 OG1 THR E1551 254.694 195.866 275.841 1.00 25.49 ATOM 95 CG2 THR E1551 255.434 193.689 276.422 1.00 25.49 ATOM 96 N PRO E1552 254.944 196.887 279.501 1.00 27.54 ATOM 97 CA PRO E1552 254.833 198.230 280.073 1.00 27.54 ATOM 98 C PRO E1552 254.876 199.335 279.042 1.00 27.54 ATOM 99 O PRO E1552 254.387 200.432 279.320 1.00 27.54 ATOM 100 CB PRO E1552 256.044 198.308 281.005 1.00 27.54 ATOM 101 CG PRO E1552 256.417 196.909 281.266 1.00 27.54 ATOM 102 CD PRO E1552 256.110 196.168 280.032 1.00 27.54 ATOM 103 N ASP E1553 255.424 199.082 277.859 1.00 28.29 ATOM 104 CA ASP E1553 255.517 200.090 276.817 1.00 28.29 ATOM 105 C ASP E1553 254.437 199.948 275.759 1.00 28.29 ATOM 106 O ASP E1553 254.558 200.547 274.691 1.00 28.29 ATOM 107 CB ASP E1553 256.895 200.056 276.163 1.00 28.29 ATOM 108 CG ASP E1553 257.249 198.700 275.618 1.00 28.29 ATOM 109 OD1 ASP E1553 256.496 197.741 275.854 1.00 28.29 ATOM 110 OD2 ASP E1553 258.299 198.589 274.963 1.00 28.29 ATOM 111 N GLY E1554 253.400 199.160 276.018 1.00 25.56 ATOM 112 CA GLY E1554 252.217 199.216 275.191 1.00 25.56 ATOM 113 C GLY E1554 251.855 197.954 274.448 1.00 25.56 ATOM 114 O GLY E1554 250.680 197.728 274.167 1.00 25.56 ATOM 115 N ALA E1555 252.835 197.131 274.112 1.00 23.31 ATOM 116 CA ALA E1555 252.561 195.970 273.291 1.00 23.31 ATOM 117 C ALA E1555 251.741 194.947 274.054 1.00 23.31 ATOM 118 O ALA E1555 251.997 194.658 275.219 1.00 23.31 ATOM 119 CB ALA E1555 253.857 195.324 272.821 1.00 23.31 ATOM 120 N GLN E1556 250.748 194.386 273.376 1.00 20.73 ATOM 121 CA GLN E1556 250.038 193.228 273.880 1.00 20.73 ATOM 122 C GLN E1556 250.475 192.010 273.110 1.00 20.73 ATOM 123 O GLN E1556 250.989 192.115 272.000 1.00 20.73 ATOM 124 CB GLN E1556 248.552 193.323 273.737 1.00 20.73 ATOM 125 CG GLN E1556 247.917 194.273 274.655 1.00 20.73 ATOM 126 CD GLN E1556 246.477 193.978 274.800 1.00 20.73 ATOM 127 OE1 GLN E1556 245.971 193.051 274.193 1.00 20.73 ATOM 128 NE2 GLN E1556 245.798 194.747 275.623 1.00 20.73 ATOM 129 N TYR E1557 250.248 190.851 273.700 1.00 23.60 ATOM 130 CA TYR E1557 250.511 189.616 272.995 1.00 23.60 ATOM 131 C TYR E1557 249.790 188.490 273.701 1.00 23.60 ATOM 132 O TYR E1557 249.671 188.493 274.921 1.00 23.60 ATOM 133 CB TYR E1557 252.006 189.332 272.908 1.00 23.60 ATOM 134 CG TYR E1557 252.703 189.314 274.227 1.00 23.60 ATOM 135 CD1 TYR E1557 253.195 190.468 274.779 1.00 23.60 ATOM 136 CD2 TYR E1557 252.880 188.142 274.916 1.00 23.60 ATOM 137 CE1 TYR E1557 253.832 190.457 275.978 1.00 23.60 ATOM 138 CE2 TYR E1557 253.513 188.126 276.113 1.00 23.60 ATOM 139 CZ TYR E1557 253.992 189.284 276.637 1.00 23.60 ATOM 140 OH TYR E1557 254.627 189.270 277.846 1.00 23.60 ATOM 141 N MET E1558 249.277 187.557 272.922 1.00 23.56 ATOM 142 CA MET E1558 248.740 186.320 273.452 1.00 23.56 ATOM 143 C MET E1558 249.876 185.327 273.530 1.00 23.56 ATOM 144 O MET E1558 250.499 185.021 272.516 1.00 23.56 ATOM 145 CB MET E1558 247.626 185.782 272.566 1.00 23.56 ATOM 146 CG MET E1558 247.260 184.356 272.849 1.00 23.56 ATOM 147 SD MET E1558 246.041 183.701 271.708 1.00 23.56 ATOM 148 CE MET E1558 246.917 183.823 270.166 1.00 23.56 ATOM 149 N GLU E1559 250.161 184.843 274.719 1.00 27.74 ATOM 150 CA GLU E1559 251.257 183.912 274.929 1.00 27.74 ATOM 151 C GLU E1559 250.675 182.533 275.145 1.00 27.74 ATOM 152 O GLU E1559 250.121 182.253 276.206 1.00 27.74 ATOM 153 CB GLU E1559 252.113 184.323 276.114 1.00 27.74 ATOM 154 CG GLU E1559 253.078 183.253 276.523 1.00 27.74 ATOM 155 CD GLU E1559 253.637 183.487 277.900 1.00 27.74 ATOM 156 OE1 GLU E1559 253.772 184.661 278.296 1.00 27.74 ATOM 157 OE2 GLU E1559 253.917 182.495 278.602 1.00 27.74 ATOM 158 N TRP E1560 250.810 181.675 274.149 1.00 28.31 ATOM 159 CA TRP E1560 250.318 180.318 274.269 1.00 28.31 ATOM 160 C TRP E1560 251.508 179.387 274.187 1.00 28.31 ATOM 161 O TRP E1560 252.639 179.862 274.087 1.00 28.31 ATOM 162 CB TRP E1560 249.274 180.009 273.207 1.00 28.31 ATOM 163 CG TRP E1560 249.608 180.426 271.835 1.00 28.31 ATOM 164 CD1 TRP E1560 249.841 181.684 271.393 1.00 28.31 ATOM 165 CD2 TRP E1560 249.678 179.586 270.696 1.00 28.31 ATOM 166 NE1 TRP E1560 250.096 181.677 270.053 1.00 28.31 ATOM 167 CE2 TRP E1560 249.998 180.393 269.601 1.00 28.31 ATOM 168 CE3 TRP E1560 249.525 178.220 270.501 1.00 28.31 ATOM 169 CZ2 TRP E1560 250.156 179.887 268.340 1.00 28.31 ATOM 170 CZ3 TRP E1560 249.685 177.721 269.253 1.00 28.31 ATOM 171 CH2 TRP E1560 249.997 178.546 268.187 1.00 28.31 ATOM 172 N ASP E1561 251.261 178.079 274.141 1.00 33.00 ATOM 173 CA ASP E1561 252.141 177.095 274.769 1.00 33.00 ATOM 174 C ASP E1561 253.603 177.504 274.836 1.00 33.00 ATOM 175 O ASP E1561 254.190 177.558 275.916 1.00 33.00 ATOM 176 CB ASP E1561 252.010 175.768 274.031 1.00 33.00 ATOM 177 CG ASP E1561 252.319 175.895 272.575 1.00 33.00 ATOM 178 OD1 ASP E1561 252.983 175.000 272.023 1.00 33.00 ATOM 179 OD2 ASP E1561 251.908 176.909 271.985 1.00 33.00 ATOM 180 N GLY E1562 254.204 177.827 273.709 1.00 32.96 ATOM 181 CA GLY E1562 255.599 178.189 273.750 1.00 32.96 ATOM 182 C GLY E1562 255.922 179.337 272.833 1.00 32.96 ATOM 183 O GLY E1562 257.091 179.616 272.577 1.00 32.96 ATOM 184 N TYR E1563 254.892 180.012 272.336 1.00 31.14 ATOM 185 CA TYR E1563 255.060 181.105 271.399 1.00 31.14 ATOM 186 C TYR E1563 254.371 182.340 271.937 1.00 31.14 ATOM 187 O TYR E1563 253.692 182.302 272.960 1.00 31.14 ATOM 188 CB TYR E1563 254.478 180.772 270.036 1.00 31.14 ATOM 189 CG TYR E1563 254.791 179.396 269.550 1.00 31.14 ATOM 190 CD1 TYR E1563 255.980 179.119 268.920 1.00 31.14 ATOM 191 CD2 TYR E1563 253.889 178.374 269.709 1.00 31.14 ATOM 192 CE1 TYR E1563 256.258 177.865 268.467 1.00 31.14 ATOM 193 CE2 TYR E1563 254.160 177.124 269.264 1.00 31.14 ATOM 194 CZ TYR E1563 255.343 176.875 268.643 1.00 31.14 ATOM 195 OH TYR E1563 255.610 175.614 268.196 1.00 31.14 ATOM 196 N ARG E1564 254.552 183.438 271.225 1.00 27.94 ATOM 197 CA ARG E1564 253.862 184.678 271.510 1.00 27.94 ATOM 198 C ARG E1564 253.356 185.275 270.216 1.00 27.94 ATOM 199 O ARG E1564 254.084 185.362 269.231 1.00 27.94 ATOM 200 CB ARG E1564 254.760 185.675 272.188 1.00 27.94 ATOM 201 CG ARG E1564 254.906 185.419 273.628 1.00 27.94 ATOM 202 CD ARG E1564 255.984 186.246 274.193 1.00 27.94 ATOM 203 NE ARG E1564 256.164 185.924 275.587 1.00 27.94 ATOM 204 CZ ARG E1564 257.160 186.383 276.314 1.00 27.94 ATOM 205 NH1 ARG E1564 258.054 187.182 275.764 1.00 27.94 ATOM 206 NH2 ARG E1564 257.256 186.045 277.584 1.00 27.94 ATOM 207 N THR E1565 252.104 185.699 270.230 1.00 23.31 ATOM 208 CA THR E1565 251.497 186.331 269.072 1.00 23.31 ATOM 209 C THR E1565 251.113 187.743 269.453 1.00 23.31 ATOM 210 O THR E1565 250.342 187.940 270.389 1.00 23.31 ATOM 211 CB THR E1565 250.279 185.551 268.596 1.00 23.31 ATOM 212 OG1 THR E1565 250.715 184.373 267.915 1.00 23.31 ATOM 213 CG2 THR E1565 249.458 186.380 267.666 1.00 23.31 ATOM 214 N ARG E1566 251.661 188.716 268.753 1.00 22.63 ATOM 215 CA ARG E1566 251.340 190.101 269.035 1.00 22.63 ATOM 216 C ARG E1566 249.908 190.395 268.626 1.00 22.63 ATOM 217 O ARG E1566 249.512 190.122 267.494 1.00 22.63 ATOM 218 CB ARG E1566 252.305 191.013 268.300 1.00 22.63 ATOM 219 CG ARG E1566 251.855 192.422 268.272 1.00 22.63 ATOM 220 CD ARG E1566 252.898 193.279 267.661 1.00 22.63 ATOM 221 NE ARG E1566 254.004 193.475 268.569 1.00 22.63 ATOM 222 CZ ARG E1566 255.266 193.472 268.187 1.00 22.63 ATOM 223 NH1 ARG E1566 255.570 193.273 266.923 1.00 22.63 ATOM 224 NH2 ARG E1566 256.221 193.659 269.065 1.00 22.63 ATOM 225 N LEU E1567 249.133 190.961 269.541 1.00 20.16 ATOM 226 CA LEU E1567 247.721 191.192 269.279 1.00 20.16 ATOM 227 C LEU E1567 247.472 192.576 268.700 1.00 20.16 ATOM 228 O LEU E1567 246.785 192.718 267.688 1.00 20.16 ATOM 229 CB LEU E1567 246.920 190.996 270.557 1.00 20.16 ATOM 230 CG LEU E1567 246.819 189.552 270.999 1.00 20.16 ATOM 231 CD1 LEU E1567 246.063 189.457 272.274 1.00 20.16 ATOM 232 CD2 LEU E1567 246.133 188.771 269.942 1.00 20.16 ATOM 233 N ASN E1568 247.984 193.609 269.343 1.00 21.60 ATOM 234 CA ASN E1568 247.713 194.967 268.914 1.00 21.60 ATOM 235 C ASN E1568 248.906 195.529 268.156 1.00 21.60 ATOM 236 O ASN E1568 249.854 194.815 267.843 1.00 21.60 ATOM 237 CB ASN E1568 247.356 195.828 270.112 1.00 21.60 ATOM 238 CG ASN E1568 248.544 196.163 270.955 1.00 21.60 ATOM 239 OD1 ASN E1568 249.601 195.561 270.829 1.00 21.60 ATOM 240 ND2 ASN E1568 248.379 197.134 271.831 1.00 21.60 ATOM 241 N THR E1569 248.876 196.826 267.859 1.00 23.46 ATOM 242 CA THR E1569 250.020 197.513 267.275 1.00 23.46 ATOM 243 C THR E1569 250.105 198.926 267.820 1.00 23.46 ATOM 244 O THR E1569 249.089 199.580 268.048 1.00 23.46 ATOM 245 CB THR E1569 249.950 197.602 265.754 1.00 23.46 ATOM 246 OG1 THR E1569 248.682 198.140 265.369 1.00 23.46 ATOM 247 CG2 THR E1569 250.184 196.244 265.114 1.00 23.46 ATOM 248 N LEU E1570 251.333 199.399 268.006 1.00 27.50 ATOM 249 CA LEU E1570 251.574 200.769 268.426 1.00 27.50 ATOM 250 C LEU E1570 251.815 201.693 267.247 1.00 27.50 ATOM 251 O LEU E1570 252.521 202.691 267.380 1.00 27.50 ATOM 252 CB LEU E1570 252.759 200.840 269.377 1.00 27.50 ATOM 253 CG LEU E1570 252.589 200.142 270.707 1.00 27.50 ATOM 254 CD1 LEU E1570 253.710 200.585 271.571 1.00 27.50 ATOM 255 CD2 LEU E1570 251.284 200.505 271.325 1.00 27.50 TER