HEADER Viral protein/Immune system 25-FEB-05 1YYM TITLE crystal structure of F23, a scorpion-toxin mimic of CD4, in complex TITLE 2 with HIV-1 YU2 gp120 envelope glycoprotein and anti-HIV-1 antibody COMPND MOL_ID: 1; COMPND 2 MOLECULE: Exterior membrane glycoprotein(GP120); COMPND 3 CHAIN: G, P; COMPND 4 MUTATION: YES; COMPND 5 FRAGMENT: ; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 4; COMPND 8 F23, scorpion-toxin mimic of CD4; COMPND 9 CHAIN: M, S; COMPND 10 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.20 ANGSTORMS DBREF 1YYM G 83 127 UNP P35961 ENV_HV1Y2 82 126 DBREF 1YYM G 195 297 UNP P35961 ENV_HV1Y2 194 296 DBREF 1YYM G 330 492 UNP P35961 ENV_HV1Y2 329 491 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 LYS CYS ALA GLY SER PHE CYS ALA CYS SEQRES 3 M 27 VLM ATOM 1 C1 IPA G 901 36.422 -1.018 44.209 1.00 39.17 ATOM 2 C2 IPA G 901 36.324 -0.962 42.684 1.00 40.86 ATOM 3 C3 IPA G 901 34.968 -0.459 42.168 1.00 41.02 ATOM 4 O2 IPA G 901 37.308 -0.061 42.211 1.00 41.97 TER ATOM 1 CA MPT M 1 44.922 8.228 35.725 1.00 44.89 ATOM 2 C MPT M 1 44.962 9.332 34.702 1.00 45.46 ATOM 3 O MPT M 1 46.018 9.631 34.140 1.00 46.26 ATOM 4 CB MPT M 1 44.306 8.682 37.033 1.00 43.58 ATOM 5 SG MPT M 1 44.992 10.220 37.736 1.00 42.02 ATOM 6 N ASN M 2 43.806 9.930 34.437 1.00 44.29 ATOM 7 CA ASN M 2 43.734 11.034 33.489 1.00 44.03 ATOM 8 C ASN M 2 44.143 12.253 34.311 1.00 42.44 ATOM 9 O ASN M 2 43.343 13.156 34.560 1.00 40.86 ATOM 10 CB ASN M 2 42.302 11.189 32.973 1.00 46.66 ATOM 11 CG ASN M 2 42.225 12.022 31.709 1.00 49.51 ATOM 12 OD1 ASN M 2 42.632 13.189 31.686 1.00 50.54 ATOM 13 ND2 ASN M 2 41.702 11.423 30.643 1.00 51.88 ATOM 14 N LEU M 3 45.401 12.250 34.743 1.00 41.15 ATOM 15 CA LEU M 3 45.952 13.306 35.587 1.00 39.94 ATOM 16 C LEU M 3 45.642 14.745 35.181 1.00 39.47 ATOM 17 O LEU M 3 45.458 15.601 36.045 1.00 38.58 ATOM 18 CB LEU M 3 47.467 13.130 35.725 1.00 37.42 ATOM 19 CG LEU M 3 48.129 14.016 36.784 1.00 37.42 ATOM 20 CD1 LEU M 3 47.504 13.743 38.140 1.00 36.27 ATOM 21 CD2 LEU M 3 49.618 13.739 36.831 1.00 37.39 ATOM 22 N HIS M 4 45.575 15.022 33.883 1.00 40.70 ATOM 23 CA HIS M 4 45.296 16.384 33.445 1.00 42.80 ATOM 24 C HIS M 4 43.903 16.825 33.868 1.00 41.76 ATOM 25 O HIS M 4 43.736 17.884 34.480 1.00 42.62 ATOM 26 CB HIS M 4 45.445 16.512 31.924 1.00 47.51 ATOM 27 CG HIS M 4 45.284 17.914 31.417 1.00 53.04 ATOM 28 ND1 HIS M 4 44.055 18.463 31.112 1.00 55.36 ATOM 29 CD2 HIS M 4 46.196 18.892 31.195 1.00 55.43 ATOM 30 CE1 HIS M 4 44.217 19.716 30.724 1.00 55.32 ATOM 31 NE2 HIS M 4 45.507 20.002 30.766 1.00 55.67 ATOM 32 N PHE M 5 42.907 16.007 33.551 1.00 39.37 ATOM 33 CA PHE M 5 41.530 16.315 33.896 1.00 37.56 ATOM 34 C PHE M 5 41.303 16.205 35.406 1.00 36.59 ATOM 35 O PHE M 5 40.383 16.817 35.957 1.00 36.43 ATOM 36 CB PHE M 5 40.591 15.364 33.155 1.00 39.18 ATOM 37 CG PHE M 5 39.139 15.584 33.462 1.00 41.73 ATOM 38 CD1 PHE M 5 38.518 16.789 33.139 1.00 42.79 ATOM 39 CD2 PHE M 5 38.390 14.591 34.086 1.00 42.57 ATOM 40 CE1 PHE M 5 37.175 17.001 33.435 1.00 43.05 ATOM 41 CE2 PHE M 5 37.048 14.793 34.385 1.00 41.81 ATOM 42 CZ PHE M 5 36.440 16.001 34.058 1.00 42.24 ATOM 43 N CYS M 6 42.153 15.422 36.065 1.00 34.45 ATOM 44 CA CYS M 6 42.066 15.212 37.501 1.00 32.70 ATOM 45 C CYS M 6 42.473 16.483 38.230 1.00 33.13 ATOM 46 O CYS M 6 41.778 16.942 39.137 1.00 31.61 ATOM 47 CB CYS M 6 42.985 14.055 37.915 1.00 33.58 ATOM 48 SG CYS M 6 42.980 13.626 39.691 1.00 32.01 ATOM 49 N GLN M 7 43.605 17.048 37.826 1.00 33.11 ATOM 50 CA GLN M 7 44.106 18.265 38.443 1.00 34.19 ATOM 51 C GLN M 7 43.125 19.407 38.217 1.00 34.17 ATOM 52 O GLN M 7 42.758 20.130 39.147 1.00 32.26 ATOM 53 CB GLN M 7 45.468 18.629 37.851 1.00 36.52 ATOM 54 CG GLN M 7 46.550 17.583 38.089 1.00 37.43 ATOM 55 CD GLN M 7 47.845 17.923 37.374 1.00 39.30 ATOM 56 OE1 GLN M 7 47.857 18.145 36.161 1.00 40.39 ATOM 57 NE2 GLN M 7 48.942 17.962 38.120 1.00 40.18 ATOM 58 N LEU M 8 42.695 19.555 36.972 1.00 33.35 ATOM 59 CA LEU M 8 41.762 20.607 36.610 1.00 33.34 ATOM 60 C LEU M 8 40.493 20.565 37.464 1.00 33.17 ATOM 61 O LEU M 8 40.098 21.578 38.049 1.00 32.05 ATOM 62 CB LEU M 8 41.421 20.489 35.121 1.00 35.17 ATOM 63 CG LEU M 8 40.646 21.628 34.446 1.00 37.94 ATOM 64 CD1 LEU M 8 41.157 22.986 34.918 1.00 37.13 ATOM 65 CD2 LEU M 8 40.803 21.496 32.939 1.00 37.97 ATOM 66 N ARG M 9 39.863 19.396 37.553 1.00 32.66 ATOM 67 CA ARG M 9 38.643 19.269 38.340 1.00 32.68 ATOM 68 C ARG M 9 38.893 19.485 39.833 1.00 31.83 ATOM 69 O ARG M 9 38.126 20.190 40.491 1.00 32.63 ATOM 70 CB ARG M 9 37.987 17.900 38.115 1.00 34.83 ATOM 71 CG ARG M 9 36.641 17.729 38.816 1.00 36.17 ATOM 72 CD ARG M 9 35.573 18.721 38.319 1.00 39.11 ATOM 73 NE ARG M 9 35.224 18.548 36.903 1.00 43.90 ATOM 74 CZ ARG M 9 35.687 19.305 35.904 1.00 45.14 ATOM 75 NH1 ARG M 9 36.524 20.307 36.148 1.00 45.45 ATOM 76 NH2 ARG M 9 35.319 19.053 34.651 1.00 43.61 ATOM 77 N CYS M 10 39.950 18.886 40.373 1.00 30.02 ATOM 78 CA CYS M 10 40.247 19.060 41.799 1.00 31.05 ATOM 79 C CYS M 10 40.573 20.527 42.108 1.00 31.46 ATOM 80 O CYS M 10 40.079 21.094 43.090 1.00 30.55 ATOM 81 CB CYS M 10 41.435 18.189 42.237 1.00 29.42 ATOM 82 SG CYS M 10 41.191 16.373 42.296 1.00 27.43 ATOM 83 N LYS M 11 41.402 21.127 41.252 1.00 32.12 ATOM 84 CA LYS M 11 41.836 22.521 41.395 1.00 31.55 ATOM 85 C LYS M 11 40.678 23.495 41.436 1.00 29.14 ATOM 86 O LYS M 11 40.708 24.461 42.193 1.00 29.73 ATOM 87 CB LYS M 11 42.741 22.923 40.236 1.00 33.30 ATOM 88 CG LYS M 11 43.992 23.675 40.639 1.00 35.64 ATOM 89 CD LYS M 11 45.105 22.707 40.998 1.00 36.99 ATOM 90 CE LYS M 11 46.468 23.379 40.886 1.00 39.35 ATOM 91 NZ LYS M 11 47.592 22.416 41.069 1.00 40.37 ATOM 92 N SER M 12 39.671 23.248 40.603 1.00 28.41 ATOM 93 CA SER M 12 38.499 24.113 40.548 1.00 28.20 ATOM 94 C SER M 12 37.756 24.045 41.873 1.00 29.27 ATOM 95 O SER M 12 36.826 24.817 42.110 1.00 30.81 ATOM 96 CB SER M 12 37.559 23.702 39.403 1.00 25.18 ATOM 97 OG SER M 12 36.810 22.536 39.710 1.00 24.52 ATOM 98 N LEU M 13 38.170 23.113 42.730 1.00 29.12 ATOM 99 CA LEU M 13 37.556 22.941 44.040 1.00 29.89 ATOM 100 C LEU M 13 38.552 23.332 45.133 1.00 30.05 ATOM 101 O LEU M 13 38.391 22.965 46.298 1.00 29.09 ATOM 102 CB LEU M 13 37.101 21.487 44.218 1.00 29.25 ATOM 103 CG LEU M 13 35.900 21.062 43.360 1.00 30.69 ATOM 104 CD1 LEU M 13 35.721 19.547 43.365 1.00 28.83 ATOM 105 CD2 LEU M 13 34.660 21.742 43.891 1.00 29.43 ATOM 106 N GLY M 14 39.583 24.077 44.739 1.00 30.68 ATOM 107 CA GLY M 14 40.598 24.527 45.679 1.00 30.20 ATOM 108 C GLY M 14 41.425 23.410 46.273 1.00 31.91 ATOM 109 O GLY M 14 41.831 23.474 47.433 1.00 33.25 ATOM 110 N LEU M 15 41.691 22.384 45.473 1.00 32.07 ATOM 111 CA LEU M 15 42.466 21.242 45.928 1.00 32.00 ATOM 112 C LEU M 15 43.459 20.802 44.866 1.00 32.78 ATOM 113 O LEU M 15 43.390 21.235 43.719 1.00 33.56 ATOM 114 CB LEU M 15 41.524 20.078 46.251 1.00 32.93 ATOM 115 CG LEU M 15 40.639 20.216 47.489 1.00 32.09 ATOM 116 CD1 LEU M 15 39.433 19.301 47.375 1.00 31.85 ATOM 117 CD2 LEU M 15 41.466 19.888 48.724 1.00 31.30 ATOM 118 N LEU M 16 44.387 19.939 45.254 1.00 34.07 ATOM 119 CA LEU M 16 45.372 19.423 44.318 1.00 34.41 ATOM 120 C LEU M 16 44.888 18.072 43.819 1.00 33.49 ATOM 121 O LEU M 16 44.172 17.356 44.521 1.00 30.51 ATOM 122 CB LEU M 16 46.744 19.272 44.992 1.00 36.93 ATOM 123 CG LEU M 16 47.606 20.530 45.144 1.00 40.02 ATOM 124 CD1 LEU M 16 48.759 20.261 46.106 1.00 40.66 ATOM 125 CD2 LEU M 16 48.135 20.956 43.772 1.00 40.56 ATOM 126 N GLY M 17 45.272 17.733 42.597 1.00 33.98 ATOM 127 CA GLY M 17 44.868 16.461 42.038 1.00 35.16 ATOM 128 C GLY M 17 46.045 15.528 41.840 1.00 35.47 ATOM 129 O GLY M 17 47.177 15.966 41.607 1.00 34.74 ATOM 130 N LYS M 18 45.781 14.234 41.949 1.00 35.88 ATOM 131 CA LYS M 18 46.821 13.237 41.752 1.00 36.43 ATOM 132 C LYS M 18 46.201 11.868 41.561 1.00 34.87 ATOM 133 O LYS M 18 45.060 11.629 41.957 1.00 33.68 ATOM 134 CB LYS M 18 47.794 13.212 42.936 1.00 38.18 ATOM 135 CG LYS M 18 47.244 12.606 44.216 1.00 41.41 ATOM 136 CD LYS M 18 48.361 12.457 45.244 1.00 43.97 ATOM 137 CE LYS M 18 47.877 11.781 46.517 1.00 45.63 ATOM 138 NZ LYS M 18 48.989 11.592 47.490 1.00 46.36 ATOM 139 N CYS M 19 46.960 10.970 40.949 1.00 34.88 ATOM 140 CA CYS M 19 46.474 9.628 40.698 1.00 34.92 ATOM 141 C CYS M 19 46.641 8.711 41.903 1.00 32.58 ATOM 142 O CYS M 19 47.653 8.750 42.595 1.00 31.31 ATOM 143 CB CYS M 19 47.200 9.011 39.497 1.00 37.26 ATOM 144 SG CYS M 19 46.993 9.862 37.891 1.00 41.27 ATOM 145 N ALA M 20 45.617 7.904 42.153 1.00 29.92 ATOM 146 CA ALA M 20 45.630 6.920 43.228 1.00 27.17 ATOM 147 C ALA M 20 45.420 5.636 42.431 1.00 25.85 ATOM 148 O ALA M 20 44.294 5.148 42.287 1.00 24.95 ATOM 149 CB ALA M 20 44.468 7.161 44.190 1.00 25.63 ATOM 150 N GLY M 21 46.513 5.109 41.891 1.00 23.64 ATOM 151 CA GLY M 21 46.418 3.931 41.060 1.00 25.32 ATOM 152 C GLY M 21 45.870 4.438 39.737 1.00 26.42 ATOM 153 O GLY M 21 46.449 5.337 39.125 1.00 27.71 ATOM 154 N SER M 22 44.745 3.895 39.296 1.00 24.82 ATOM 155 CA SER M 22 44.165 4.345 38.041 1.00 26.37 ATOM 156 C SER M 22 43.030 5.324 38.297 1.00 25.55 ATOM 157 O SER M 22 42.327 5.716 37.373 1.00 26.02 ATOM 158 CB SER M 22 43.647 3.157 37.230 1.00 24.88 ATOM 159 OG SER M 22 42.509 2.592 37.842 1.00 28.02 ATOM 160 N PHE M 23 42.856 5.721 39.557 1.00 25.43 ATOM 161 CA PHE M 23 41.795 6.648 39.919 1.00 23.04 ATOM 162 C PHE M 23 42.336 8.033 40.224 1.00 24.72 ATOM 163 O PHE M 23 43.531 8.215 40.492 1.00 24.33 ATOM 164 CB PHE M 23 41.026 6.154 41.144 1.00 21.87 ATOM 165 CG PHE M 23 40.420 4.786 40.983 1.00 22.25 ATOM 166 CD1 PHE M 23 40.967 3.688 41.640 1.00 21.66 ATOM 167 CD2 PHE M 23 39.291 4.597 40.190 1.00 21.87 ATOM 168 CE1 PHE M 23 40.397 2.416 41.514 1.00 23.79 ATOM 169 CE2 PHE M 23 38.710 3.329 40.054 1.00 21.20 ATOM 170 CZ PHE M 23 39.262 2.239 40.716 1.00 23.13 ATOM 171 N CYS M 24 41.439 9.009 40.180 1.00 24.56 ATOM 172 CA CYS M 24 41.783 10.388 40.478 1.00 25.13 ATOM 173 C CYS M 24 41.447 10.657 41.940 1.00 23.69 ATOM 174 O CYS M 24 40.393 10.247 42.426 1.00 21.04 ATOM 175 CB CYS M 24 40.980 11.331 39.583 1.00 29.01 ATOM 176 SG CYS M 24 41.041 13.099 40.041 1.00 36.14 ATOM 177 N ALA M 25 42.354 11.329 42.643 1.00 23.63 ATOM 178 CA ALA M 25 42.127 11.676 44.042 1.00 25.15 ATOM 179 C ALA M 25 42.469 13.155 44.234 1.00 25.86 ATOM 180 O ALA M 25 43.393 13.672 43.606 1.00 25.59 ATOM 181 CB ALA M 25 42.991 10.803 44.961 1.00 24.05 ATOM 182 N CYS M 26 41.707 13.833 45.086 1.00 27.15 ATOM 183 CA CYS M 26 41.934 15.245 45.355 1.00 28.02 ATOM 184 C CYS M 26 42.548 15.391 46.742 1.00 29.71 ATOM 185 O CYS M 26 41.970 14.956 47.734 1.00 30.27 ATOM 186 CB CYS M 26 40.618 16.021 45.302 1.00 25.22 ATOM 187 SG CYS M 26 39.747 16.081 43.698 1.00 29.46 ATOM 188 N VLM M 27 43.724 16.002 46.812 1.00 31.68 ATOM 189 CA VLM M 27 44.389 16.186 48.093 1.00 34.02 ATOM 190 C VLM M 27 44.236 17.622 48.572 1.00 34.50 ATOM 191 O VLM M 27 44.337 18.536 47.724 1.00 34.43 ATOM 192 CB VLM M 27 45.889 15.867 47.992 1.00 34.90 ATOM 193 CG1 VLM M 27 46.510 15.862 49.382 1.00 35.34 ATOM 194 CG2 VLM M 27 46.087 14.532 47.301 1.00 35.16 ATOM 195 NT VLM M 27 44.031 17.809 49.791 1.00 33.88 ATOM 196 C1 EDO M 904 38.124 25.558 34.869 1.00 46.63 ATOM 197 O1 EDO M 904 38.797 26.775 34.541 1.00 47.37 ATOM 198 C2 EDO M 904 38.283 25.279 36.364 1.00 45.75 ATOM 199 O2 EDO M 904 37.148 25.798 37.045 1.00 45.02 TER