HEADER IMMUNE SYSTEM 31-DEC-69 2XRC TITLE Human complement factor I COMPND MOL_ID: 1; COMPND 2 MOLECULE: HUMAN COMPLEMENT FACTOR I; COMPND 3 CHAIN: A, B, C, D; COMPND 4 EC: 3.4.21.45; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.69 ANGSTORMS DBREF 2XRC B 1 565 UNP P05156 CFAI_HUMAN 19 583 MODRES 2XRC ASN B 52 ASN GLYCOSYLATION SITE MODRES 2XRC ASN B 85 ASN GLYCOSYLATION SITE MODRES 2XRC ASN B 159 ASN GLYCOSYLATION SITE MODRES 2XRC ASN B 446 ASN GLYCOSYLATION SITE MODRES 2XRC ASN B 476 ASN GLYCOSYLATION SITE MODRES 2XRC ASN B 518 ASN GLYCOSYLATION SITE SEQRES 1 B 36 ALA CYS GLN GLY LYS GLY PHE HIS CYS LYS SER GLY VAL SEQRES 2 B 36 CYS ILE PRO SER GLN TYR GLN CYS ASN GLY GLU VAL ASP SEQRES 3 B 36 CYS ILE THR GLY GLU ASP GLU VAL GLY CYS ATOM 1 N ALA B 240 53.687 70.399 -7.553 1.00 58.86 ATOM 2 CA ALA B 240 53.272 69.311 -8.438 1.00 59.54 ATOM 3 C ALA B 240 53.331 67.979 -7.689 1.00 61.92 ATOM 4 O ALA B 240 54.089 67.839 -6.731 1.00 62.25 ATOM 5 CB ALA B 240 54.156 69.267 -9.667 1.00 58.41 ATOM 6 N CYS B 241 52.528 67.010 -8.123 1.00 64.87 ATOM 7 CA CYS B 241 52.460 65.706 -7.453 1.00 67.57 ATOM 8 C CYS B 241 53.361 64.666 -8.121 1.00 68.05 ATOM 9 O CYS B 241 53.775 64.833 -9.269 1.00 67.77 ATOM 10 CB CYS B 241 51.016 65.198 -7.402 1.00 69.05 ATOM 11 SG CYS B 241 49.854 66.298 -6.529 1.00 73.62 ATOM 12 N GLN B 242 53.643 63.589 -7.388 1.00 67.60 ATOM 13 CA GLN B 242 54.611 62.571 -7.813 1.00 67.18 ATOM 14 C GLN B 242 53.949 61.403 -8.552 1.00 65.52 ATOM 15 O GLN B 242 54.045 61.307 -9.776 1.00 65.24 ATOM 16 CB GLN B 242 55.414 62.066 -6.601 1.00 68.08 ATOM 17 CG GLN B 242 56.353 60.892 -6.884 1.00 69.21 ATOM 18 CD GLN B 242 57.306 61.167 -8.031 1.00 71.93 ATOM 19 OE1 GLN B 242 57.955 62.214 -8.076 1.00 73.86 ATOM 20 NE2 GLN B 242 57.391 60.229 -8.969 1.00 71.16 ATOM 21 N GLY B 243 53.285 60.523 -7.805 1.00 63.01 ATOM 22 CA GLY B 243 52.730 59.287 -8.359 1.00 59.67 ATOM 23 C GLY B 243 51.352 59.501 -8.952 1.00 57.68 ATOM 24 O GLY B 243 51.210 60.145 -9.993 1.00 56.65 ATOM 25 N LYS B 244 50.335 58.965 -8.281 1.00 55.34 ATOM 26 CA LYS B 244 48.945 59.095 -8.723 1.00 52.86 ATOM 27 C LYS B 244 48.228 60.149 -7.876 1.00 50.14 ATOM 28 O LYS B 244 47.146 59.906 -7.333 1.00 50.20 ATOM 29 CB LYS B 244 48.238 57.735 -8.641 1.00 53.47 ATOM 30 CG LYS B 244 46.996 57.618 -9.518 1.00 53.47 ATOM 31 CD LYS B 244 46.499 56.182 -9.598 1.00 52.67 ATOM 32 CE LYS B 244 45.247 56.070 -10.461 1.00 52.76 ATOM 33 NZ LYS B 244 44.755 54.664 -10.564 1.00 52.12 ATOM 34 N GLY B 245 48.842 61.326 -7.778 1.00 47.40 ATOM 35 CA GLY B 245 48.342 62.408 -6.931 1.00 47.04 ATOM 36 C GLY B 245 47.763 63.560 -7.729 1.00 46.90 ATOM 37 O GLY B 245 48.339 63.980 -8.730 1.00 49.93 ATOM 38 N PHE B 246 46.623 64.073 -7.272 1.00 46.95 ATOM 39 CA PHE B 246 45.947 65.208 -7.903 1.00 46.72 ATOM 40 C PHE B 246 46.367 66.517 -7.228 1.00 45.71 ATOM 41 O PHE B 246 46.162 66.690 -6.029 1.00 45.24 ATOM 42 CB PHE B 246 44.428 65.030 -7.803 1.00 46.28 ATOM 43 CG PHE B 246 43.638 66.174 -8.378 1.00 46.76 ATOM 44 CD1 PHE B 246 43.428 66.273 -9.746 1.00 47.20 ATOM 45 CD2 PHE B 246 43.092 67.145 -7.549 1.00 47.35 ATOM 46 CE1 PHE B 246 42.692 67.328 -10.280 1.00 47.24 ATOM 47 CE2 PHE B 246 42.356 68.202 -8.078 1.00 47.38 ATOM 48 CZ PHE B 246 42.156 68.291 -9.444 1.00 46.05 ATOM 49 N HIS B 247 46.944 67.430 -8.008 1.00 45.00 ATOM 50 CA HIS B 247 47.447 68.707 -7.497 1.00 45.89 ATOM 51 C HIS B 247 46.389 69.812 -7.548 1.00 47.25 ATOM 52 O HIS B 247 46.037 70.294 -8.630 1.00 48.30 ATOM 53 CB HIS B 247 48.672 69.149 -8.303 1.00 46.13 ATOM 54 CG HIS B 247 49.294 70.416 -7.806 1.00 45.69 ATOM 55 ND1 HIS B 247 48.956 71.656 -8.305 1.00 46.22 ATOM 56 CD2 HIS B 247 50.227 70.635 -6.850 1.00 45.43 ATOM 57 CE1 HIS B 247 49.660 72.585 -7.683 1.00 46.19 ATOM 58 NE2 HIS B 247 50.435 71.992 -6.791 1.00 45.89 ATOM 59 N CYS B 248 45.897 70.217 -6.379 1.00 46.97 ATOM 60 CA CYS B 248 44.934 71.316 -6.285 1.00 48.00 ATOM 61 C CYS B 248 45.662 72.650 -6.398 1.00 49.00 ATOM 62 O CYS B 248 46.877 72.718 -6.206 1.00 50.54 ATOM 63 CB CYS B 248 44.161 71.271 -4.961 1.00 49.19 ATOM 64 SG CYS B 248 43.556 69.625 -4.465 1.00 47.53 ATOM 65 N LYS B 249 44.910 73.710 -6.682 1.00 50.93 ATOM 66 CA LYS B 249 45.478 75.059 -6.830 1.00 51.72 ATOM 67 C LYS B 249 45.994 75.659 -5.515 1.00 53.15 ATOM 68 O LYS B 249 46.668 76.691 -5.528 1.00 58.42 ATOM 69 CB LYS B 249 44.448 76.008 -7.451 1.00 51.70 ATOM 70 CG LYS B 249 44.143 75.728 -8.913 1.00 51.67 ATOM 71 CD LYS B 249 42.942 76.531 -9.387 1.00 51.24 ATOM 72 CE LYS B 249 42.567 76.181 -10.820 1.00 51.91 ATOM 73 NZ LYS B 249 43.542 76.719 -11.807 1.00 51.94 ATOM 74 N SER B 250 45.672 75.021 -4.391 1.00 51.49 ATOM 75 CA SER B 250 46.154 75.454 -3.079 1.00 50.05 ATOM 76 C SER B 250 47.494 74.819 -2.677 1.00 50.96 ATOM 77 O SER B 250 47.955 74.996 -1.545 1.00 50.82 ATOM 78 CB SER B 250 45.100 75.149 -2.017 1.00 49.12 ATOM 79 OG SER B 250 44.859 73.757 -1.927 1.00 49.92 ATOM 80 N GLY B 251 48.115 74.087 -3.598 1.00 50.32 ATOM 81 CA GLY B 251 49.410 73.455 -3.345 1.00 50.52 ATOM 82 C GLY B 251 49.297 72.213 -2.479 1.00 49.28 ATOM 83 O GLY B 251 50.059 72.037 -1.527 1.00 47.93 ATOM 84 N VAL B 252 48.351 71.346 -2.828 1.00 49.59 ATOM 85 CA VAL B 252 48.043 70.156 -2.036 1.00 50.37 ATOM 86 C VAL B 252 47.829 68.945 -2.941 1.00 52.06 ATOM 87 O VAL B 252 47.057 69.010 -3.898 1.00 51.53 ATOM 88 CB VAL B 252 46.760 70.365 -1.194 1.00 49.14 ATOM 89 CG1 VAL B 252 46.431 69.111 -0.384 1.00 47.74 ATOM 90 CG2 VAL B 252 46.907 71.574 -0.281 1.00 47.05 ATOM 91 N CYS B 253 48.511 67.847 -2.625 1.00 55.13 ATOM 92 CA CYS B 253 48.326 66.574 -3.327 1.00 54.95 ATOM 93 C CYS B 253 47.388 65.673 -2.526 1.00 52.73 ATOM 94 O CYS B 253 47.529 65.549 -1.311 1.00 52.18 ATOM 95 CB CYS B 253 49.668 65.869 -3.539 1.00 57.38 ATOM 96 SG CYS B 253 50.749 66.678 -4.742 1.00 60.63 ATOM 97 N ILE B 254 46.432 65.058 -3.217 1.00 50.44 ATOM 98 CA ILE B 254 45.449 64.169 -2.594 1.00 50.12 ATOM 99 C ILE B 254 45.227 62.942 -3.485 1.00 50.55 ATOM 100 O ILE B 254 45.609 62.960 -4.653 1.00 46.99 ATOM 101 CB ILE B 254 44.102 64.899 -2.331 1.00 48.87 ATOM 102 CG1 ILE B 254 43.632 65.666 -3.573 1.00 47.25 ATOM 103 CG2 ILE B 254 44.240 65.858 -1.156 1.00 47.75 ATOM 104 CD1 ILE B 254 42.224 66.216 -3.450 1.00 45.12 ATOM 105 N PRO B 255 44.628 61.866 -2.936 1.00 53.98 ATOM 106 CA PRO B 255 44.331 60.690 -3.761 1.00 55.60 ATOM 107 C PRO B 255 43.500 61.028 -5.004 1.00 57.53 ATOM 108 O PRO B 255 42.599 61.868 -4.938 1.00 58.49 ATOM 109 CB PRO B 255 43.538 59.785 -2.810 1.00 54.38 ATOM 110 CG PRO B 255 44.011 60.151 -1.461 1.00 53.91 ATOM 111 CD PRO B 255 44.323 61.625 -1.513 1.00 54.37 ATOM 112 N SER B 256 43.812 60.380 -6.123 1.00 56.78 ATOM 113 CA SER B 256 43.128 60.651 -7.389 1.00 55.20 ATOM 114 C SER B 256 41.658 60.236 -7.374 1.00 53.65 ATOM 115 O SER B 256 40.825 60.907 -7.979 1.00 53.50 ATOM 116 CB SER B 256 43.849 59.965 -8.549 1.00 56.64 ATOM 117 OG SER B 256 45.117 60.555 -8.772 1.00 59.72 ATOM 118 N GLN B 257 41.342 59.138 -6.685 1.00 52.38 ATOM 119 CA GLN B 257 39.954 58.654 -6.606 1.00 51.06 ATOM 120 C GLN B 257 39.032 59.630 -5.864 1.00 51.11 ATOM 121 O GLN B 257 37.824 59.646 -6.102 1.00 55.29 ATOM 122 CB GLN B 257 39.868 57.244 -5.993 1.00 49.84 ATOM 123 CG GLN B 257 40.087 57.144 -4.476 1.00 50.27 ATOM 124 CD GLN B 257 41.550 57.037 -4.079 1.00 49.78 ATOM 125 OE1 GLN B 257 42.446 57.387 -4.851 1.00 50.34 ATOM 126 NE2 GLN B 257 41.797 56.557 -2.864 1.00 47.45 ATOM 127 N TYR B 258 39.607 60.445 -4.979 1.00 48.41 ATOM 128 CA TYR B 258 38.857 61.491 -4.274 1.00 45.89 ATOM 129 C TYR B 258 38.284 62.560 -5.212 1.00 44.81 ATOM 130 O TYR B 258 37.446 63.357 -4.789 1.00 46.39 ATOM 131 CB TYR B 258 39.742 62.176 -3.230 1.00 45.54 ATOM 132 CG TYR B 258 40.040 61.387 -1.965 1.00 44.66 ATOM 133 CD1 TYR B 258 39.606 60.069 -1.795 1.00 44.43 ATOM 134 CD2 TYR B 258 40.792 61.961 -0.946 1.00 45.07 ATOM 135 CE1 TYR B 258 39.898 59.363 -0.635 1.00 44.35 ATOM 136 CE2 TYR B 258 41.094 61.261 0.211 1.00 45.65 ATOM 137 CZ TYR B 258 40.643 59.965 0.363 1.00 45.14 ATOM 138 OH TYR B 258 40.943 59.273 1.512 1.00 45.52 ATOM 139 N GLN B 259 38.754 62.601 -6.460 1.00 41.70 ATOM 140 CA GLN B 259 38.110 63.403 -7.504 1.00 39.06 ATOM 141 C GLN B 259 36.683 62.913 -7.722 1.00 37.66 ATOM 142 O GLN B 259 36.432 61.709 -7.727 1.00 38.30 ATOM 143 CB GLN B 259 38.876 63.303 -8.825 1.00 39.31 ATOM 144 CG GLN B 259 40.223 64.007 -8.832 1.00 39.79 ATOM 145 CD GLN B 259 40.843 64.057 -10.218 1.00 40.08 ATOM 146 OE1 GLN B 259 40.768 65.074 -10.911 1.00 39.36 ATOM 147 NE2 GLN B 259 41.446 62.951 -10.635 1.00 38.96 ATOM 148 N CYS B 260 35.759 63.852 -7.900 1.00 37.51 ATOM 149 CA CYS B 260 34.334 63.541 -8.063 1.00 37.42 ATOM 150 C CYS B 260 33.866 62.437 -7.116 1.00 36.03 ATOM 151 O CYS B 260 33.397 61.392 -7.569 1.00 33.11 ATOM 152 CB CYS B 260 34.030 63.120 -9.506 1.00 38.04 ATOM 153 SG CYS B 260 34.448 64.316 -10.774 1.00 38.56 ATOM 154 N ASN B 261 34.016 62.659 -5.811 1.00 36.15 ATOM 155 CA ASN B 261 33.515 61.701 -4.809 1.00 36.66 ATOM 156 C ASN B 261 32.454 62.285 -3.869 1.00 36.71 ATOM 157 O ASN B 261 32.078 61.645 -2.887 1.00 35.80 ATOM 158 CB ASN B 261 34.671 61.079 -4.008 1.00 36.58 ATOM 159 CG ASN B 261 35.222 62.005 -2.931 1.00 36.62 ATOM 160 OD1 ASN B 261 35.076 63.226 -3.000 1.00 37.84 ATOM 161 ND2 ASN B 261 35.874 61.420 -1.933 1.00 34.56 ATOM 162 N GLY B 262 31.982 63.494 -4.177 1.00 36.99 ATOM 163 CA GLY B 262 30.934 64.150 -3.394 1.00 37.55 ATOM 164 C GLY B 262 31.474 65.160 -2.402 1.00 38.48 ATOM 165 O GLY B 262 30.991 66.293 -2.337 1.00 39.92 ATOM 166 N GLU B 263 32.466 64.744 -1.619 1.00 38.89 ATOM 167 CA GLU B 263 33.123 65.626 -0.656 1.00 38.88 ATOM 168 C GLU B 263 34.179 66.492 -1.343 1.00 39.72 ATOM 169 O GLU B 263 34.907 66.020 -2.219 1.00 38.43 ATOM 170 CB GLU B 263 33.783 64.808 0.458 1.00 38.69 ATOM 171 CG GLU B 263 34.355 65.660 1.590 1.00 38.06 ATOM 172 CD GLU B 263 35.171 64.866 2.592 1.00 38.34 ATOM 173 OE1 GLU B 263 35.976 65.494 3.313 1.00 36.26 ATOM 174 OE2 GLU B 263 35.011 63.625 2.668 1.00 38.80 ATOM 175 N VAL B 264 34.257 67.755 -0.927 1.00 39.98 ATOM 176 CA VAL B 264 35.283 68.681 -1.404 1.00 39.69 ATOM 177 C VAL B 264 36.522 68.537 -0.525 1.00 39.88 ATOM 178 O VAL B 264 36.423 68.634 0.700 1.00 41.04 ATOM 179 CB VAL B 264 34.796 70.149 -1.340 1.00 40.03 ATOM 180 CG1 VAL B 264 35.834 71.086 -1.942 1.00 39.81 ATOM 181 CG2 VAL B 264 33.463 70.306 -2.054 1.00 40.07 ATOM 182 N ASP B 265 37.677 68.302 -1.150 1.00 39.82 ATOM 183 CA ASP B 265 38.951 68.129 -0.431 1.00 39.01 ATOM 184 C ASP B 265 39.900 69.313 -0.600 1.00 40.39 ATOM 185 O ASP B 265 40.568 69.710 0.354 1.00 43.24 ATOM 186 CB ASP B 265 39.676 66.875 -0.907 1.00 38.97 ATOM 187 CG ASP B 265 38.814 65.634 -0.850 1.00 39.41 ATOM 188 OD1 ASP B 265 37.754 65.639 -0.189 1.00 40.87 ATOM 189 OD2 ASP B 265 39.213 64.637 -1.475 1.00 38.05 ATOM 190 N CYS B 266 39.990 69.844 -1.818 1.00 42.18 ATOM 191 CA CYS B 266 40.795 71.038 -2.079 1.00 42.60 ATOM 192 C CYS B 266 40.052 72.264 -1.556 1.00 41.34 ATOM 193 O CYS B 266 38.860 72.424 -1.818 1.00 41.80 ATOM 194 CB CYS B 266 41.069 71.227 -3.578 1.00 44.28 ATOM 195 SG CYS B 266 41.523 69.752 -4.529 1.00 47.82 ATOM 196 N ILE B 267 40.752 73.130 -0.828 1.00 41.08 ATOM 197 CA ILE B 267 40.163 74.405 -0.374 1.00 41.26 ATOM 198 C ILE B 267 39.773 75.321 -1.539 1.00 41.54 ATOM 199 O ILE B 267 38.989 76.249 -1.363 1.00 42.06 ATOM 200 CB ILE B 267 41.081 75.178 0.616 1.00 39.77 ATOM 201 CG1 ILE B 267 42.434 75.512 -0.022 1.00 39.86 ATOM 202 CG2 ILE B 267 41.257 74.388 1.905 1.00 40.95 ATOM 203 CD1 ILE B 267 43.527 75.823 0.980 1.00 39.72 ATOM 204 N THR B 268 40.333 75.062 -2.717 1.00 45.30 ATOM 205 CA THR B 268 39.920 75.730 -3.959 1.00 46.77 ATOM 206 C THR B 268 38.653 75.100 -4.555 1.00 47.81 ATOM 207 O THR B 268 37.871 75.777 -5.226 1.00 48.60 ATOM 208 CB THR B 268 41.047 75.684 -5.000 1.00 46.74 ATOM 209 OG1 THR B 268 41.611 74.367 -5.039 1.00 47.79 ATOM 210 CG2 THR B 268 42.136 76.677 -4.641 1.00 45.79 ATOM 211 N GLY B 269 38.475 73.801 -4.322 1.00 48.08 ATOM 212 CA GLY B 269 37.228 73.093 -4.642 1.00 48.50 ATOM 213 C GLY B 269 37.070 72.620 -6.079 1.00 50.64 ATOM 214 O GLY B 269 35.949 72.368 -6.532 1.00 52.37 ATOM 215 N GLU B 270 38.189 72.473 -6.787 1.00 49.00 ATOM 216 CA GLU B 270 38.164 72.145 -8.216 1.00 47.60 ATOM 217 C GLU B 270 38.270 70.639 -8.491 1.00 45.58 ATOM 218 O GLU B 270 38.319 70.225 -9.648 1.00 43.42 ATOM 219 CB GLU B 270 39.250 72.928 -8.981 1.00 48.62 ATOM 220 CG GLU B 270 40.668 72.350 -8.939 1.00 49.49 ATOM 221 CD GLU B 270 41.360 72.568 -7.612 1.00 50.81 ATOM 222 OE1 GLU B 270 40.739 72.304 -6.561 1.00 50.23 ATOM 223 OE2 GLU B 270 42.531 73.001 -7.619 1.00 54.18 ATOM 224 N ASP B 271 38.309 69.829 -7.434 1.00 43.11 ATOM 225 CA ASP B 271 38.237 68.372 -7.575 1.00 40.29 ATOM 226 C ASP B 271 36.785 67.887 -7.637 1.00 37.80 ATOM 227 O ASP B 271 36.538 66.702 -7.862 1.00 39.05 ATOM 228 CB ASP B 271 39.001 67.664 -6.447 1.00 40.44 ATOM 229 CG ASP B 271 38.250 67.667 -5.127 1.00 41.67 ATOM 230 OD1 ASP B 271 37.551 68.654 -4.827 1.00 44.49 ATOM 231 OD2 ASP B 271 38.364 66.672 -4.378 1.00 41.54 ATOM 232 N GLU B 272 35.838 68.799 -7.423 1.00 35.33 ATOM 233 CA GLU B 272 34.414 68.516 -7.625 1.00 34.88 ATOM 234 C GLU B 272 33.800 69.438 -8.680 1.00 34.28 ATOM 235 O GLU B 272 32.585 69.656 -8.683 1.00 36.30 ATOM 236 CB GLU B 272 33.634 68.647 -6.309 1.00 34.38 ATOM 237 CG GLU B 272 34.100 67.716 -5.200 1.00 34.60 ATOM 238 CD GLU B 272 33.950 66.251 -5.558 1.00 34.94 ATOM 239 OE1 GLU B 272 34.967 65.524 -5.504 1.00 34.78 ATOM 240 OE2 GLU B 272 32.821 65.826 -5.893 1.00 35.23 ATOM 241 N VAL B 273 34.629 69.979 -9.570 1.00 33.09 ATOM 242 CA VAL B 273 34.124 70.808 -10.670 1.00 33.49 ATOM 243 C VAL B 273 34.047 69.978 -11.944 1.00 33.96 ATOM 244 O VAL B 273 35.019 69.324 -12.332 1.00 35.05 ATOM 245 CB VAL B 273 34.969 72.076 -10.904 1.00 33.92 ATOM 246 CG1 VAL B 273 36.364 71.728 -11.424 1.00 33.41 ATOM 247 CG2 VAL B 273 34.239 73.013 -11.862 1.00 33.59 ATOM 248 N GLY B 274 32.880 70.003 -12.581 1.00 34.06 ATOM 249 CA GLY B 274 32.594 69.126 -13.707 1.00 35.16 ATOM 250 C GLY B 274 32.628 67.665 -13.299 1.00 36.58 ATOM 251 O GLY B 274 33.613 66.970 -13.555 1.00 37.50 ATOM 252 N CYS B 275 31.559 67.211 -12.645 1.00 37.16 ATOM 253 CA CYS B 275 31.413 65.797 -12.262 1.00 38.52 ATOM 254 C CYS B 275 30.018 65.264 -12.596 1.00 38.23 ATOM 255 O CYS B 275 29.875 64.195 -13.194 1.00 36.65 ATOM 256 CB CYS B 275 31.697 65.603 -10.770 1.00 38.70 ATOM 257 SG CYS B 275 33.397 65.979 -10.285 1.00 40.19 ATOM 258 CA CA B 600 36.665 65.151 -3.710 1.00 58.69 TER