HEADER VIRAL PROTEIN/IMMUNE SYSTEM 26-AUG-06 2I60 TITLE Crystal structure of [Phe23]M47, a scorpion-toxin mimic of CD4, in TITLE 2 complex with HIV-1 YU2 GP120 envelope glycoprotein and anti-HIV-1 TITLE 3 antibody 17B COMPND MOL_ID: 4; COMPND 2 MOLECULE: [PHE23]M47, SCORPION-TOXIN MIMIC OF CD4; COMPND 3 CHAIN: M, S; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.40 ANGSTORMS DBREF 2I60 M 1 27 PDB 2I60 2I60 1 27 SEQRES 1 M 27 MPT ASN LEU HIS PHE CYS GLN LEU ARG CYS LYS SER LEU SEQRES 2 M 27 GLY LEU LEU GLY ARG CYS ALA DPR THR PHE CYS ALA CYS SEQRES 3 M 27 VLM ATOM 1 CA MPT M 1 43.352 8.171 36.574 1.00 45.28 ATOM 2 C MPT M 1 44.033 9.141 35.650 1.00 45.61 ATOM 3 O MPT M 1 45.261 9.200 35.614 1.00 45.00 ATOM 4 CB MPT M 1 43.897 8.248 37.994 1.00 44.23 ATOM 5 SG MPT M 1 44.604 9.855 38.522 1.00 45.76 ATOM 6 N ASN M 2 43.244 9.887 34.883 1.00 46.94 ATOM 7 CA ASN M 2 43.798 10.893 33.984 1.00 49.31 ATOM 8 C ASN M 2 44.134 12.080 34.883 1.00 49.72 ATOM 9 O ASN M 2 43.263 12.887 35.213 1.00 49.84 ATOM 10 CB ASN M 2 42.766 11.296 32.923 1.00 50.98 ATOM 11 CG ASN M 2 43.198 12.516 32.116 1.00 52.89 ATOM 12 OD1 ASN M 2 44.327 12.587 31.625 1.00 55.01 ATOM 13 ND2 ASN M 2 42.293 13.477 31.969 1.00 53.57 ATOM 14 N LEU M 3 45.397 12.170 35.289 1.00 50.47 ATOM 15 CA LEU M 3 45.843 13.228 36.188 1.00 51.49 ATOM 16 C LEU M 3 45.450 14.636 35.755 1.00 52.78 ATOM 17 O LEU M 3 45.030 15.450 36.583 1.00 52.72 ATOM 18 CB LEU M 3 47.357 13.165 36.369 1.00 50.61 ATOM 19 CG LEU M 3 47.846 13.928 37.601 1.00 50.86 ATOM 20 CD1 LEU M 3 47.336 13.227 38.850 1.00 50.81 ATOM 21 CD2 LEU M 3 49.364 13.989 37.613 1.00 50.98 ATOM 22 N HIS M 4 45.590 14.923 34.464 1.00 53.14 ATOM 23 CA HIS M 4 45.253 16.238 33.950 1.00 53.52 ATOM 24 C HIS M 4 43.833 16.605 34.366 1.00 52.43 ATOM 25 O HIS M 4 43.624 17.539 35.142 1.00 52.42 ATOM 26 CB HIS M 4 45.373 16.256 32.430 1.00 56.98 ATOM 27 CG HIS M 4 45.669 17.611 31.866 1.00 61.81 ATOM 28 ND1 HIS M 4 44.905 18.723 32.155 1.00 63.14 ATOM 29 CD2 HIS M 4 46.644 18.033 31.023 1.00 62.93 ATOM 30 CE1 HIS M 4 45.396 19.770 31.515 1.00 64.58 ATOM 31 NE2 HIS M 4 46.451 19.379 30.821 1.00 64.78 ATOM 32 N PHE M 5 42.859 15.862 33.855 1.00 50.71 ATOM 33 CA PHE M 5 41.458 16.108 34.180 1.00 48.17 ATOM 34 C PHE M 5 41.212 16.021 35.693 1.00 45.83 ATOM 35 O PHE M 5 40.335 16.702 36.231 1.00 45.18 ATOM 36 CB PHE M 5 40.579 15.096 33.436 1.00 49.46 ATOM 37 CG PHE M 5 39.120 15.174 33.786 1.00 52.54 ATOM 38 CD1 PHE M 5 38.383 16.326 33.522 1.00 54.01 ATOM 39 CD2 PHE M 5 38.478 14.090 34.384 1.00 53.99 ATOM 40 CE1 PHE M 5 37.026 16.398 33.849 1.00 53.93 ATOM 41 CE2 PHE M 5 37.122 14.152 34.714 1.00 54.00 ATOM 42 CZ PHE M 5 36.396 15.308 34.446 1.00 53.86 ATOM 43 N CYS M 6 41.996 15.189 36.374 1.00 42.87 ATOM 44 CA CYS M 6 41.856 15.006 37.818 1.00 41.16 ATOM 45 C CYS M 6 42.224 16.277 38.570 1.00 41.51 ATOM 46 O CYS M 6 41.461 16.755 39.408 1.00 40.50 ATOM 47 CB CYS M 6 42.736 13.843 38.280 1.00 39.79 ATOM 48 SG CYS M 6 42.710 13.455 40.062 1.00 37.60 ATOM 49 N GLN M 7 43.403 16.812 38.276 1.00 42.31 ATOM 50 CA GLN M 7 43.860 18.042 38.903 1.00 42.52 ATOM 51 C GLN M 7 42.872 19.137 38.555 1.00 42.41 ATOM 52 O GLN M 7 42.439 19.908 39.408 1.00 42.70 ATOM 53 CB GLN M 7 45.232 18.426 38.366 1.00 44.51 ATOM 54 CG GLN M 7 46.347 17.505 38.787 1.00 47.74 ATOM 55 CD GLN M 7 47.665 17.914 38.185 1.00 50.96 ATOM 56 OE1 GLN M 7 47.879 17.774 36.977 1.00 53.59 ATOM 57 NE2 GLN M 7 48.559 18.439 39.018 1.00 52.63 ATOM 58 N LEU M 8 42.515 19.192 37.282 1.00 41.38 ATOM 59 CA LEU M 8 41.581 20.188 36.807 1.00 41.03 ATOM 60 C LEU M 8 40.337 20.241 37.678 1.00 40.80 ATOM 61 O LEU M 8 40.033 21.276 38.268 1.00 40.15 ATOM 62 CB LEU M 8 41.200 19.884 35.362 1.00 41.62 ATOM 63 CG LEU M 8 40.258 20.860 34.666 1.00 42.95 ATOM 64 CD1 LEU M 8 40.810 21.143 33.286 1.00 43.53 ATOM 65 CD2 LEU M 8 38.833 20.287 34.595 1.00 43.78 ATOM 66 N ARG M 9 39.625 19.122 37.770 1.00 40.72 ATOM 67 CA ARG M 9 38.405 19.082 38.563 1.00 41.23 ATOM 68 C ARG M 9 38.633 19.349 40.045 1.00 40.93 ATOM 69 O ARG M 9 37.914 20.145 40.649 1.00 41.58 ATOM 70 CB ARG M 9 37.693 17.738 38.396 1.00 42.28 ATOM 71 CG ARG M 9 36.350 17.679 39.115 1.00 44.41 ATOM 72 CD ARG M 9 35.369 18.750 38.612 1.00 47.08 ATOM 73 NE ARG M 9 34.860 18.492 37.261 1.00 50.81 ATOM 74 CZ ARG M 9 35.172 19.207 36.176 1.00 52.87 ATOM 75 NH1 ARG M 9 36.002 20.243 36.260 1.00 50.80 ATOM 76 NH2 ARG M 9 34.647 18.886 34.998 1.00 53.19 ATOM 77 N CYS M 10 39.621 18.685 40.638 1.00 39.30 ATOM 78 CA CYS M 10 39.895 18.893 42.053 1.00 38.88 ATOM 79 C CYS M 10 40.240 20.366 42.287 1.00 39.78 ATOM 80 O CYS M 10 39.782 20.975 43.256 1.00 39.45 ATOM 81 CB CYS M 10 41.065 18.016 42.528 1.00 37.57 ATOM 82 SG CYS M 10 40.794 16.204 42.668 1.00 35.15 ATOM 83 N LYS M 11 41.036 20.925 41.376 1.00 39.31 ATOM 84 CA LYS M 11 41.491 22.315 41.451 1.00 39.24 ATOM 85 C LYS M 11 40.363 23.331 41.426 1.00 36.45 ATOM 86 O LYS M 11 40.473 24.395 42.015 1.00 35.34 ATOM 87 CB LYS M 11 42.460 22.618 40.303 1.00 41.57 ATOM 88 CG LYS M 11 43.224 23.915 40.458 1.00 43.19 ATOM 89 CD LYS M 11 44.230 23.826 41.598 1.00 46.64 ATOM 90 CE LYS M 11 45.278 22.743 41.335 1.00 48.05 ATOM 91 NZ LYS M 11 46.083 22.996 40.095 1.00 48.92 ATOM 92 N SER M 12 39.283 23.007 40.733 1.00 36.37 ATOM 93 CA SER M 12 38.149 23.915 40.662 1.00 35.10 ATOM 94 C SER M 12 37.492 23.936 42.037 1.00 35.78 ATOM 95 O SER M 12 36.602 24.750 42.298 1.00 35.92 ATOM 96 CB SER M 12 37.135 23.434 39.620 1.00 33.80 ATOM 97 OG SER M 12 36.285 22.428 40.156 1.00 33.31 ATOM 98 N LEU M 13 37.951 23.045 42.914 1.00 34.23 ATOM 99 CA LEU M 13 37.404 22.926 44.258 1.00 35.48 ATOM 100 C LEU M 13 38.403 23.258 45.372 1.00 37.38 ATOM 101 O LEU M 13 38.179 22.939 46.547 1.00 36.59 ATOM 102 CB LEU M 13 36.859 21.515 44.438 1.00 34.28 ATOM 103 CG LEU M 13 35.659 21.241 43.524 1.00 34.82 ATOM 104 CD1 LEU M 13 35.604 19.766 43.112 1.00 33.13 ATOM 105 CD2 LEU M 13 34.400 21.660 44.253 1.00 30.35 ATOM 106 N GLY M 14 39.504 23.900 44.989 1.00 39.02 ATOM 107 CA GLY M 14 40.523 24.295 45.946 1.00 39.45 ATOM 108 C GLY M 14 41.255 23.132 46.574 1.00 40.23 ATOM 109 O GLY M 14 41.506 23.116 47.783 1.00 40.55 ATOM 110 N LEU M 15 41.603 22.154 45.749 1.00 39.74 ATOM 111 CA LEU M 15 42.310 20.981 46.221 1.00 39.46 ATOM 112 C LEU M 15 43.237 20.528 45.116 1.00 40.27 ATOM 113 O LEU M 15 43.036 20.863 43.951 1.00 40.55 ATOM 114 CB LEU M 15 41.314 19.870 46.548 1.00 40.05 ATOM 115 CG LEU M 15 40.263 20.186 47.616 1.00 40.08 ATOM 116 CD1 LEU M 15 39.216 19.090 47.669 1.00 39.86 ATOM 117 CD2 LEU M 15 40.951 20.331 48.957 1.00 39.99 ATOM 118 N LEU M 16 44.270 19.782 45.472 1.00 41.36 ATOM 119 CA LEU M 16 45.179 19.288 44.456 1.00 43.55 ATOM 120 C LEU M 16 44.732 17.889 44.067 1.00 43.37 ATOM 121 O LEU M 16 44.058 17.201 44.839 1.00 41.37 ATOM 122 CB LEU M 16 46.625 19.260 44.971 1.00 46.04 ATOM 123 CG LEU M 16 47.364 20.606 45.023 1.00 48.11 ATOM 124 CD1 LEU M 16 48.780 20.389 45.542 1.00 49.38 ATOM 125 CD2 LEU M 16 47.406 21.237 43.632 1.00 47.26 ATOM 126 N GLY M 17 45.097 17.480 42.859 1.00 43.57 ATOM 127 CA GLY M 17 44.731 16.162 42.391 1.00 42.52 ATOM 128 C GLY M 17 45.956 15.285 42.264 1.00 41.97 ATOM 129 O GLY M 17 47.020 15.751 41.861 1.00 41.57 ATOM 130 N ARG M 18 45.792 14.016 42.630 1.00 42.20 ATOM 131 CA ARG M 18 46.845 13.009 42.564 1.00 41.75 ATOM 132 C ARG M 18 46.197 11.651 42.312 1.00 39.90 ATOM 133 O ARG M 18 45.111 11.369 42.828 1.00 38.83 ATOM 134 CB ARG M 18 47.642 12.955 43.874 1.00 45.29 ATOM 135 CG ARG M 18 46.790 12.979 45.126 1.00 49.19 ATOM 136 CD ARG M 18 47.424 12.192 46.270 1.00 52.56 ATOM 137 NE ARG M 18 46.934 10.813 46.316 1.00 56.31 ATOM 138 CZ ARG M 18 46.509 10.203 47.423 1.00 57.45 ATOM 139 NH1 ARG M 18 46.512 10.850 48.585 1.00 57.68 ATOM 140 NH2 ARG M 18 46.074 8.948 47.370 1.00 56.54 ATOM 141 N CYS M 19 46.861 10.814 41.518 1.00 36.99 ATOM 142 CA CYS M 19 46.328 9.498 41.212 1.00 34.99 ATOM 143 C CYS M 19 46.369 8.548 42.409 1.00 31.64 ATOM 144 O CYS M 19 47.269 8.602 43.229 1.00 29.22 ATOM 145 CB CYS M 19 47.079 8.888 40.025 1.00 36.91 ATOM 146 SG CYS M 19 46.624 9.593 38.400 1.00 43.32 ATOM 147 N ALA M 20 45.358 7.698 42.523 1.00 29.68 ATOM 148 CA ALA M 20 45.302 6.720 43.604 1.00 27.76 ATOM 149 C ALA M 20 45.103 5.339 42.969 1.00 27.51 ATOM 150 O ALA M 20 43.973 4.882 42.798 1.00 26.21 ATOM 151 CB ALA M 20 44.162 7.048 44.564 1.00 24.53 ATOM 152 N DPR M 21 46.212 4.670 42.589 1.00 28.05 ATOM 153 CA DPR M 21 46.184 3.689 41.499 1.00 27.67 ATOM 154 CB DPR M 21 47.660 3.328 41.322 1.00 26.31 ATOM 155 CG DPR M 21 48.394 4.541 41.770 1.00 27.58 ATOM 156 CD DPR M 21 47.581 5.123 42.892 1.00 27.96 ATOM 157 C DPR M 21 45.634 4.291 40.210 1.00 28.98 ATOM 158 O DPR M 21 46.258 5.178 39.628 1.00 30.88 ATOM 159 N THR M 22 44.475 3.808 39.774 1.00 29.04 ATOM 160 CA THR M 22 43.873 4.269 38.529 1.00 28.05 ATOM 161 C THR M 22 42.758 5.276 38.795 1.00 28.78 ATOM 162 O THR M 22 42.089 5.734 37.869 1.00 30.14 ATOM 163 CB THR M 22 43.327 3.077 37.720 1.00 25.88 ATOM 164 OG1 THR M 22 42.280 2.435 38.457 1.00 23.17 ATOM 165 CG2 THR M 22 44.384 1.990 37.594 1.00 25.34 ATOM 166 N PHE M 23 42.542 5.609 40.060 1.00 26.96 ATOM 167 CA PHE M 23 41.489 6.548 40.388 1.00 27.34 ATOM 168 C PHE M 23 42.005 7.953 40.629 1.00 28.33 ATOM 169 O PHE M 23 43.211 8.175 40.760 1.00 28.27 ATOM 170 CB PHE M 23 40.711 6.067 41.617 1.00 28.48 ATOM 171 CG PHE M 23 40.162 4.671 41.478 1.00 29.28 ATOM 172 CD1 PHE M 23 40.794 3.597 42.094 1.00 28.97 ATOM 173 CD2 PHE M 23 39.027 4.429 40.710 1.00 29.47 ATOM 174 CE1 PHE M 23 40.307 2.303 41.949 1.00 30.47 ATOM 175 CE2 PHE M 23 38.529 3.137 40.555 1.00 30.77 ATOM 176 CZ PHE M 23 39.169 2.072 41.176 1.00 30.61 ATOM 177 N CYS M 24 41.081 8.905 40.665 1.00 28.85 ATOM 178 CA CYS M 24 41.431 10.286 40.923 1.00 29.24 ATOM 179 C CYS M 24 41.076 10.553 42.362 1.00 29.85 ATOM 180 O CYS M 24 40.015 10.140 42.831 1.00 30.03 ATOM 181 CB CYS M 24 40.635 11.226 40.031 1.00 32.51 ATOM 182 SG CYS M 24 40.771 12.998 40.473 1.00 39.90 ATOM 183 N ALA M 25 41.967 11.239 43.067 1.00 31.35 ATOM 184 CA ALA M 25 41.735 11.581 44.462 1.00 30.99 ATOM 185 C ALA M 25 42.092 13.046 44.672 1.00 31.30 ATOM 186 O ALA M 25 43.038 13.552 44.070 1.00 31.39 ATOM 187 CB ALA M 25 42.575 10.697 45.352 1.00 27.81 ATOM 188 N CYS M 26 41.314 13.728 45.505 1.00 33.14 ATOM 189 CA CYS M 26 41.548 15.136 45.804 1.00 34.87 ATOM 190 C CYS M 26 42.065 15.210 47.236 1.00 36.14 ATOM 191 O CYS M 26 41.468 14.638 48.147 1.00 37.53 ATOM 192 CB CYS M 26 40.251 15.951 45.697 1.00 36.07 ATOM 193 SG CYS M 26 39.364 15.989 44.094 1.00 35.13 ATOM 194 N VLM M 27 43.173 15.913 47.437 1.00 36.41 ATOM 195 CA VLM M 27 43.759 16.038 48.768 1.00 36.96 ATOM 196 C VLM M 27 43.356 17.344 49.445 1.00 36.13 ATOM 197 O VLM M 27 43.894 18.389 49.082 1.00 35.73 ATOM 198 CB VLM M 27 45.293 15.990 48.703 1.00 37.84 ATOM 199 CG1 VLM M 27 45.857 15.869 50.111 1.00 38.38 ATOM 200 CG2 VLM M 27 45.742 14.830 47.826 1.00 39.02 ATOM 201 NT VLM M 27 42.506 17.312 50.333 1.00 35.73 TER