HEADER Viral protein/Immune system 25-FEB-05 1YYL TITLE crystal structure of CD4M33, 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: CD4M33, scorpion-toxin mimic of CD4; COMPND 3 CHAIN: M, S; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.75 ANGSTORMS MODRES 1YYL BIF S 23 PHE SEQRES 1 S 27 MPT ASN LEU HIS PHE CYS GLN LEU ARG CYS LYS SER LEU SEQRES 2 S 27 GLY LEU LEU GLY LYS CYS ALA GLY SER PHE CYS ALA CYS SEQRES 3 S 27 VLM ATOM 1 CA MPT S1001 -25.475 29.334 38.675 1.00 37.12 ATOM 2 C MPT S1001 -25.872 28.200 37.785 1.00 37.74 ATOM 3 O MPT S1001 -27.050 27.891 37.660 1.00 37.66 ATOM 4 CB MPT S1001 -25.159 28.867 40.078 1.00 35.81 ATOM 5 SG MPT S1001 -26.035 27.371 40.661 1.00 35.70 ATOM 6 N ASN S1002 -24.885 27.573 37.159 1.00 39.62 ATOM 7 CA ASN S1002 -25.137 26.422 36.273 1.00 40.10 ATOM 8 C ASN S1002 -25.550 25.269 37.200 1.00 39.75 ATOM 9 O ASN S1002 -24.773 24.343 37.441 1.00 39.74 ATOM 10 CB ASN S1002 -23.856 26.064 35.523 1.00 42.66 ATOM 11 CG ASN S1002 -24.082 25.889 34.035 1.00 44.17 ATOM 12 OD1 ASN S1002 -24.782 24.960 33.599 1.00 44.14 ATOM 13 ND2 ASN S1002 -23.496 26.783 33.242 1.00 43.30 ATOM 14 N LEU S1003 -26.775 25.354 37.712 1.00 39.52 ATOM 15 CA LEU S1003 -27.326 24.359 38.660 1.00 39.74 ATOM 16 C LEU S1003 -27.134 22.931 38.129 1.00 41.12 ATOM 17 O LEU S1003 -27.084 21.978 38.901 1.00 41.49 ATOM 18 CB LEU S1003 -28.804 24.645 38.907 1.00 38.14 ATOM 19 CG LEU S1003 -29.450 23.820 40.017 1.00 37.55 ATOM 20 CD1 LEU S1003 -30.547 24.625 40.711 1.00 36.72 ATOM 21 CD2 LEU S1003 -29.992 22.539 39.419 1.00 38.03 ATOM 22 N HIS S1004 -27.023 22.799 36.816 1.00 42.40 ATOM 23 CA HIS S1004 -26.824 21.483 36.174 1.00 43.95 ATOM 24 C HIS S1004 -25.365 21.048 36.449 1.00 44.01 ATOM 25 O HIS S1004 -25.111 19.973 37.006 1.00 43.40 ATOM 26 CB HIS S1004 -27.050 21.623 34.672 1.00 46.63 ATOM 27 CG HIS S1004 -27.762 22.886 34.293 1.00 49.51 ATOM 28 ND1 HIS S1004 -27.287 24.136 34.634 1.00 50.02 ATOM 29 CD2 HIS S1004 -28.921 23.094 33.623 1.00 50.43 ATOM 30 CE1 HIS S1004 -28.122 25.058 34.191 1.00 50.82 ATOM 31 NE2 HIS S1004 -29.122 24.453 33.574 1.00 51.04 ATOM 32 N PHE S1005 -24.428 21.906 36.052 1.00 43.82 ATOM 33 CA PHE S1005 -22.983 21.656 36.235 1.00 43.11 ATOM 34 C PHE S1005 -22.675 21.631 37.747 1.00 42.65 ATOM 35 O PHE S1005 -21.799 20.890 38.203 1.00 42.66 ATOM 36 CB PHE S1005 -22.177 22.770 35.569 1.00 44.40 ATOM 37 CG PHE S1005 -22.271 22.782 34.066 1.00 46.36 ATOM 38 CD1 PHE S1005 -23.138 21.927 33.392 1.00 46.54 ATOM 39 CD2 PHE S1005 -21.487 23.665 33.319 1.00 47.86 ATOM 40 CE1 PHE S1005 -23.225 21.949 31.997 1.00 46.84 ATOM 41 CE2 PHE S1005 -21.566 23.696 31.924 1.00 47.11 ATOM 42 CZ PHE S1005 -22.437 22.837 31.263 1.00 47.10 ATOM 43 N CYS S1006 -23.397 22.446 38.508 1.00 41.17 ATOM 44 CA CYS S1006 -23.203 22.515 39.971 1.00 39.19 ATOM 45 C CYS S1006 -23.570 21.148 40.574 1.00 38.65 ATOM 46 O CYS S1006 -22.827 20.597 41.396 1.00 37.81 ATOM 47 CB CYS S1006 -24.099 23.601 40.558 1.00 38.82 ATOM 48 SG CYS S1006 -23.930 23.886 42.351 1.00 40.03 ATOM 49 N GLN S1007 -24.710 20.608 40.150 1.00 37.30 ATOM 50 CA GLN S1007 -25.181 19.299 40.659 1.00 36.60 ATOM 51 C GLN S1007 -24.205 18.189 40.239 1.00 34.89 ATOM 52 O GLN S1007 -24.146 17.139 40.879 1.00 35.14 ATOM 53 CB GLN S1007 -26.579 18.989 40.128 1.00 37.00 ATOM 54 CG GLN S1007 -27.642 19.900 40.696 1.00 38.85 ATOM 55 CD GLN S1007 -29.012 19.642 40.114 1.00 40.19 ATOM 56 OE1 GLN S1007 -29.206 19.691 38.892 1.00 39.68 ATOM 57 NE2 GLN S1007 -29.979 19.375 40.985 1.00 41.29 ATOM 58 N LEU S1008 -23.451 18.420 39.172 1.00 32.54 ATOM 59 CA LEU S1008 -22.485 17.406 38.709 1.00 30.97 ATOM 60 C LEU S1008 -21.201 17.530 39.535 1.00 31.09 ATOM 61 O LEU S1008 -20.657 16.529 40.000 1.00 32.70 ATOM 62 CB LEU S1008 -22.161 17.599 37.229 1.00 27.97 ATOM 63 CG LEU S1008 -23.319 17.265 36.297 1.00 25.19 ATOM 64 CD1 LEU S1008 -22.898 17.484 34.862 1.00 23.13 ATOM 65 CD2 LEU S1008 -23.745 15.829 36.525 1.00 24.18 ATOM 66 N ARG S1009 -20.734 18.757 39.720 1.00 30.39 ATOM 67 CA ARG S1009 -19.493 18.995 40.483 1.00 30.42 ATOM 68 C ARG S1009 -19.706 18.675 41.981 1.00 29.90 ATOM 69 O ARG S1009 -18.829 18.089 42.627 1.00 27.92 ATOM 70 CB ARG S1009 -19.033 20.448 40.310 1.00 31.35 ATOM 71 CG ARG S1009 -18.608 20.800 38.883 1.00 31.33 ATOM 72 CD ARG S1009 -17.955 22.179 38.792 1.00 30.24 ATOM 73 NE ARG S1009 -18.879 23.255 39.133 1.00 29.52 ATOM 74 CZ ARG S1009 -18.742 24.045 40.191 1.00 29.59 ATOM 75 NH1 ARG S1009 -17.712 23.877 41.010 1.00 28.42 ATOM 76 NH2 ARG S1009 -19.638 24.995 40.429 1.00 29.10 ATOM 77 N CYS S1010 -20.855 19.055 42.530 1.00 30.37 ATOM 78 CA CYS S1010 -21.108 18.782 43.966 1.00 30.50 ATOM 79 C CYS S1010 -21.271 17.275 44.174 1.00 30.53 ATOM 80 O CYS S1010 -21.112 16.778 45.295 1.00 31.49 ATOM 81 CB CYS S1010 -22.361 19.503 44.461 1.00 29.85 ATOM 82 SG CYS S1010 -22.097 21.259 44.852 1.00 27.57 ATOM 83 N LYS S1011 -21.592 16.559 43.099 1.00 29.28 ATOM 84 CA LYS S1011 -21.761 15.093 43.181 1.00 27.07 ATOM 85 C LYS S1011 -20.389 14.485 43.596 1.00 25.04 ATOM 86 O LYS S1011 -20.323 13.416 44.201 1.00 24.27 ATOM 87 CB LYS S1011 -22.211 14.541 41.824 1.00 26.87 ATOM 88 CG LYS S1011 -22.480 13.051 41.829 1.00 29.95 ATOM 89 CD LYS S1011 -22.677 12.491 40.426 1.00 34.06 ATOM 90 CE LYS S1011 -24.132 12.587 39.955 1.00 38.15 ATOM 91 NZ LYS S1011 -24.649 13.985 39.825 1.00 40.79 ATOM 92 N SER S1012 -19.311 15.196 43.283 1.00 23.51 ATOM 93 CA SER S1012 -17.943 14.732 43.610 1.00 21.39 ATOM 94 C SER S1012 -17.695 14.822 45.132 1.00 21.54 ATOM 95 O SER S1012 -16.835 14.123 45.661 1.00 22.89 ATOM 96 CB SER S1012 -16.898 15.574 42.871 1.00 18.56 ATOM 97 OG SER S1012 -16.985 15.384 41.472 1.00 15.40 ATOM 98 N LEU S1013 -18.423 15.684 45.829 1.00 20.45 ATOM 99 CA LEU S1013 -18.220 15.795 47.287 1.00 20.60 ATOM 100 C LEU S1013 -19.226 14.875 47.962 1.00 21.34 ATOM 101 O LEU S1013 -19.310 14.816 49.190 1.00 21.33 ATOM 102 CB LEU S1013 -18.435 17.233 47.775 1.00 21.08 ATOM 103 CG LEU S1013 -17.323 18.277 47.570 1.00 21.94 ATOM 104 CD1 LEU S1013 -15.976 17.715 48.030 1.00 20.96 ATOM 105 CD2 LEU S1013 -17.250 18.670 46.115 1.00 23.10 ATOM 106 N GLY S1014 -19.978 14.151 47.146 1.00 22.24 ATOM 107 CA GLY S1014 -20.987 13.267 47.687 1.00 23.74 ATOM 108 C GLY S1014 -22.087 14.103 48.308 1.00 24.73 ATOM 109 O GLY S1014 -22.661 13.728 49.325 1.00 24.73 ATOM 110 N LEU S1015 -22.380 15.245 47.692 1.00 26.30 ATOM 111 CA LEU S1015 -23.428 16.161 48.210 1.00 28.21 ATOM 112 C LEU S1015 -24.286 16.691 47.031 1.00 29.34 ATOM 113 O LEU S1015 -23.961 16.478 45.851 1.00 28.77 ATOM 114 CB LEU S1015 -22.776 17.338 48.953 1.00 27.64 ATOM 115 CG LEU S1015 -22.011 17.065 50.259 1.00 26.75 ATOM 116 CD1 LEU S1015 -21.054 18.210 50.530 1.00 26.10 ATOM 117 CD2 LEU S1015 -22.980 16.883 51.425 1.00 25.23 ATOM 118 N LEU S1016 -25.373 17.381 47.373 1.00 30.06 ATOM 119 CA LEU S1016 -26.288 17.957 46.363 1.00 30.43 ATOM 120 C LEU S1016 -25.854 19.398 46.087 1.00 30.06 ATOM 121 O LEU S1016 -25.042 19.960 46.820 1.00 30.05 ATOM 122 CB LEU S1016 -27.716 17.951 46.886 1.00 32.02 ATOM 123 CG LEU S1016 -28.139 16.592 47.436 1.00 35.29 ATOM 124 CD1 LEU S1016 -29.592 16.668 47.861 1.00 36.28 ATOM 125 CD2 LEU S1016 -27.928 15.503 46.381 1.00 34.86 ATOM 126 N GLY S1017 -26.407 19.986 45.033 1.00 29.75 ATOM 127 CA GLY S1017 -26.046 21.347 44.695 1.00 30.94 ATOM 128 C GLY S1017 -27.191 22.314 44.433 1.00 31.49 ATOM 129 O GLY S1017 -28.056 22.075 43.585 1.00 32.44 ATOM 130 N LYS S1018 -27.201 23.411 45.179 1.00 31.16 ATOM 131 CA LYS S1018 -28.217 24.465 45.000 1.00 30.53 ATOM 132 C LYS S1018 -27.444 25.761 44.689 1.00 30.34 ATOM 133 O LYS S1018 -26.286 25.908 45.069 1.00 28.96 ATOM 134 CB LYS S1018 -29.083 24.625 46.264 1.00 30.50 ATOM 135 CG LYS S1018 -28.343 24.540 47.602 1.00 33.78 ATOM 136 CD LYS S1018 -27.730 25.870 48.042 1.00 37.74 ATOM 137 CE LYS S1018 -28.777 26.848 48.596 1.00 40.81 ATOM 138 NZ LYS S1018 -29.402 26.369 49.870 1.00 40.65 ATOM 139 N CYS S1019 -28.067 26.678 43.964 1.00 31.05 ATOM 140 CA CYS S1019 -27.382 27.930 43.650 1.00 30.41 ATOM 141 C CYS S1019 -27.361 28.793 44.914 1.00 30.32 ATOM 142 O CYS S1019 -28.137 28.582 45.860 1.00 30.47 ATOM 143 CB CYS S1019 -28.094 28.690 42.533 1.00 30.14 ATOM 144 SG CYS S1019 -27.978 27.958 40.870 1.00 33.57 ATOM 145 N ALA S1020 -26.445 29.751 44.909 1.00 29.01 ATOM 146 CA ALA S1020 -26.264 30.714 46.001 1.00 28.30 ATOM 147 C ALA S1020 -25.788 31.983 45.281 1.00 29.26 ATOM 148 O ALA S1020 -24.586 32.252 45.207 1.00 31.55 ATOM 149 CB ALA S1020 -25.205 30.214 46.971 1.00 25.52 ATOM 150 N GLY S1021 -26.736 32.741 44.738 1.00 28.43 ATOM 151 CA GLY S1021 -26.382 33.930 43.986 1.00 28.21 ATOM 152 C GLY S1021 -25.985 33.426 42.610 1.00 28.49 ATOM 153 O GLY S1021 -26.681 32.591 42.042 1.00 29.70 ATOM 154 N SER S1022 -24.872 33.907 42.067 1.00 28.90 ATOM 155 CA SER S1022 -24.407 33.438 40.732 1.00 28.71 ATOM 156 C SER S1022 -23.395 32.301 40.972 1.00 27.96 ATOM 157 O SER S1022 -22.741 31.819 40.044 1.00 27.07 ATOM 158 CB SER S1022 -23.730 34.584 39.971 1.00 29.04 ATOM 159 OG SER S1022 -24.659 35.610 39.647 1.00 30.96 ATOM 160 N BIF S1023 -23.313 31.878 42.229 1.00 26.39 ATOM 161 CA BIF S1023 -22.368 30.841 42.666 1.00 26.22 ATOM 162 C BIF S1023 -23.052 29.478 42.799 1.00 28.67 ATOM 163 CB BIF S1023 -21.784 31.242 44.017 1.00 23.05 ATOM 164 CG BIF S1023 -20.922 32.492 44.097 1.00 19.29 ATOM 165 CD2 BIF S1023 -21.299 33.536 44.964 1.00 18.08 ATOM 166 CE2 BIF S1023 -20.499 34.686 45.082 1.00 17.01 ATOM 167 CZ BIF S1023 -19.277 34.841 44.329 1.00 15.67 ATOM 168 CE1 BIF S1023 -18.929 33.752 43.439 1.00 17.83 ATOM 169 CD1 BIF S1023 -19.741 32.598 43.328 1.00 19.20 ATOM 170 C8 BIF S1023 -17.408 37.698 45.962 1.00 15.76 ATOM 171 C9 BIF S1023 -16.788 38.286 44.844 1.00 15.77 ATOM 172 C10 BIF S1023 -16.979 37.751 43.552 1.00 14.72 ATOM 173 C11 BIF S1023 -17.798 36.618 43.370 1.00 14.40 ATOM 174 C12 BIF S1023 -18.459 35.980 44.477 1.00 14.84 ATOM 175 C13 BIF S1023 -18.228 36.566 45.786 1.00 15.39 ATOM 176 O BIF S1023 -24.275 29.356 42.693 1.00 30.67 ATOM 177 N CYS S1024 -22.221 28.476 43.083 1.00 29.46 ATOM 178 CA CYS S1024 -22.641 27.075 43.266 1.00 29.76 ATOM 179 C CYS S1024 -22.206 26.635 44.676 1.00 28.89 ATOM 180 O CYS S1024 -21.045 26.798 45.055 1.00 29.14 ATOM 181 CB CYS S1024 -21.959 26.196 42.224 1.00 32.69 ATOM 182 SG CYS S1024 -21.977 24.404 42.577 1.00 39.63 ATOM 183 N ALA S1025 -23.139 26.079 45.438 1.00 27.34 ATOM 184 CA ALA S1025 -22.842 25.620 46.808 1.00 26.28 ATOM 185 C ALA S1025 -23.235 24.137 46.910 1.00 27.02 ATOM 186 O ALA S1025 -24.162 23.680 46.233 1.00 26.67 ATOM 187 CB ALA S1025 -23.625 26.444 47.810 1.00 24.36 ATOM 188 N CYS S1026 -22.518 23.399 47.751 1.00 27.87 ATOM 189 CA CYS S1026 -22.779 21.954 47.949 1.00 28.39 ATOM 190 C CYS S1026 -23.345 21.767 49.361 1.00 29.00 ATOM 191 O CYS S1026 -22.670 22.064 50.353 1.00 28.38 ATOM 192 CB CYS S1026 -21.483 21.142 47.822 1.00 29.23 ATOM 193 SG CYS S1026 -20.603 21.259 46.228 1.00 29.13 ATOM 194 N VLM S1027 -24.575 21.269 49.443 1.00 29.98 ATOM 195 CA VLM S1027 -25.220 21.049 50.752 1.00 30.65 ATOM 196 C VLM S1027 -25.049 19.570 51.134 1.00 31.36 ATOM 197 O VLM S1027 -25.355 18.698 50.285 1.00 30.07 ATOM 198 CB VLM S1027 -26.722 21.374 50.706 1.00 30.23 ATOM 199 CG1 VLM S1027 -27.292 21.384 52.114 1.00 30.96 ATOM 200 CG2 VLM S1027 -26.942 22.709 50.037 1.00 31.94 ATOM 201 NT VLM S1027 -24.616 19.326 52.285 1.00 31.92 TER