HEADER IMMUNE SYSTEM 31-DEC-69 3CM9 TITLE Solution Structure of Human SIgA2 COMPND MOL_ID: 1; COMPND 2 MOLECULE: Immunoglobulin heavy chain; COMPND 3 CHAIN: A, B, C, D; EXPDTA SOLUTION SCATTERING DBREF 3CM9 A 1 462 PDB 3CM9 3CM9 1 462 SEQRES 1 A 123 HIS LEU LEU PRO PRO PRO SER GLU GLU LEU ALA LEU ASN SEQRES 2 A 123 GLU LEU VAL THR LEU THR CYS LEU ALA ARG GLY PHE SER SEQRES 3 A 123 PRO LYS ASP VAL LEU VAL ARG TRP LEU GLN GLY SER GLN SEQRES 4 A 123 GLU LEU PRO ARG GLU LYS TYR LEU THR TRP ALA SER ARG SEQRES 5 A 123 GLN GLU PRO SER GLN GLY THR THR THR PHE ALA VAL THR SEQRES 6 A 123 SER ILE LEU ARG VAL ALA ALA GLU ASP TRP LYS LYS GLY SEQRES 7 A 123 ASP THR PHE SER CYS MET VAL GLY HIS GLU ALA LEU PRO SEQRES 8 A 123 LEU ALA PHE THR GLN LYS THR ILE ASP ARG LEU ALA GLY SEQRES 9 A 123 LYS PRO THR HIS VAL ASN VAL SER VAL VAL MET ALA GLU SEQRES 10 A 123 VAL ASP GLY THR CYS TYR ATOM 1 CA HIS A 340 58.026 71.517 -37.505 0.00 0.00 ATOM 2 CA LEU A 341 59.652 68.343 -36.130 0.00 0.00 ATOM 3 CA LEU A 342 63.064 69.051 -34.579 0.00 0.00 ATOM 4 CA PRO A 343 65.917 66.509 -34.257 0.00 0.00 ATOM 5 CA PRO A 344 67.969 66.068 -31.027 0.00 0.00 ATOM 6 CA PRO A 345 71.063 68.321 -30.724 0.00 0.00 ATOM 7 CA SER A 346 74.714 67.254 -30.937 0.00 0.00 ATOM 8 CA GLU A 347 75.484 67.611 -27.217 0.00 0.00 ATOM 9 CA GLU A 348 72.359 65.636 -26.276 0.00 0.00 ATOM 10 CA LEU A 349 73.722 62.467 -27.901 0.00 0.00 ATOM 11 CA ALA A 350 76.104 62.226 -24.929 0.00 0.00 ATOM 12 CA LEU A 351 73.333 60.995 -22.603 0.00 0.00 ATOM 13 CA ASN A 352 71.875 57.465 -22.435 0.00 0.00 ATOM 14 CA GLU A 353 68.375 56.782 -21.060 0.00 0.00 ATOM 15 CA LEU A 354 66.494 59.695 -22.689 0.00 0.00 ATOM 16 CA VAL A 355 66.425 61.603 -26.010 0.00 0.00 ATOM 17 CA THR A 356 64.161 64.617 -26.663 0.00 0.00 ATOM 18 CA LEU A 357 62.151 64.778 -29.902 0.00 0.00 ATOM 19 CA THR A 358 60.623 68.251 -30.278 0.00 0.00 ATOM 20 CA CYS A 359 57.903 68.894 -32.882 0.00 0.00 ATOM 21 CA LEU A 360 56.769 72.529 -32.742 0.00 0.00 ATOM 22 CA ALA A 361 53.406 73.587 -34.173 0.00 0.00 ATOM 23 CA ARG A 362 52.870 77.347 -34.308 0.00 0.00 ATOM 24 CA GLY A 363 50.614 79.675 -36.282 0.00 0.00 ATOM 25 CA PHE A 364 47.256 78.398 -35.033 0.00 0.00 ATOM 26 CA SER A 365 44.019 79.699 -33.520 0.00 0.00 ATOM 27 CA PRO A 366 42.135 78.967 -31.380 0.00 0.00 ATOM 28 CA LYS A 367 44.363 77.356 -28.736 0.00 0.00 ATOM 29 CA ASP A 368 42.373 74.103 -28.881 0.00 0.00 ATOM 30 CA VAL A 369 44.797 71.537 -30.317 0.00 0.00 ATOM 31 CA LEU A 370 45.356 67.846 -29.533 0.00 0.00 ATOM 32 CA VAL A 371 48.929 66.597 -29.989 0.00 0.00 ATOM 33 CA ARG A 372 50.007 62.925 -29.842 0.00 0.00 ATOM 34 CA TRP A 373 52.963 60.694 -30.772 0.00 0.00 ATOM 35 CA LEU A 374 53.380 57.274 -32.413 0.00 0.00 ATOM 36 CA GLN A 375 55.955 54.501 -32.900 0.00 0.00 ATOM 37 CA GLY A 376 57.114 53.416 -36.349 0.00 0.00 ATOM 38 CA SER A 377 58.316 49.863 -35.698 0.00 0.00 ATOM 39 CA GLN A 378 55.770 48.580 -33.164 0.00 0.00 ATOM 40 CA GLU A 379 53.069 50.677 -34.903 0.00 0.00 ATOM 41 CA LEU A 380 51.687 51.599 -31.462 0.00 0.00 ATOM 42 CA PRO A 381 51.271 55.051 -29.837 0.00 0.00 ATOM 43 CA ARG A 382 53.920 56.393 -27.450 0.00 0.00 ATOM 44 CA GLU A 383 53.564 56.919 -23.690 0.00 0.00 ATOM 45 CA LYS A 384 56.290 59.322 -22.513 0.00 0.00 ATOM 46 CA TYR A 385 55.585 62.867 -23.777 0.00 0.00 ATOM 47 CA LEU A 386 54.411 66.278 -22.494 0.00 0.00 ATOM 48 CA THR A 387 52.523 69.357 -23.737 0.00 0.00 ATOM 49 CA TRP A 388 53.131 73.081 -23.095 0.00 0.00 ATOM 50 CA ALA A 389 50.861 76.163 -23.294 0.00 0.00 ATOM 51 CA SER A 390 51.109 79.983 -23.397 0.00 0.00 ATOM 52 CA ARG A 391 49.254 82.739 -25.292 0.00 0.00 ATOM 53 CA GLN A 392 50.943 85.411 -27.432 0.00 0.00 ATOM 54 CA GLU A 393 49.251 88.738 -26.651 0.00 0.00 ATOM 55 CA PRO A 394 51.561 91.700 -27.437 0.00 0.00 ATOM 56 CA SER A 395 50.667 95.393 -27.724 0.00 0.00 ATOM 57 CA GLN A 396 50.338 95.268 -31.522 0.00 0.00 ATOM 58 CA GLY A 397 47.683 93.630 -33.690 0.00 0.00 ATOM 59 CA THR A 398 49.125 90.126 -34.046 0.00 0.00 ATOM 60 CA THR A 399 48.077 87.019 -32.095 0.00 0.00 ATOM 61 CA THR A 400 48.600 83.291 -32.858 0.00 0.00 ATOM 62 CA PHE A 401 49.032 80.382 -30.418 0.00 0.00 ATOM 63 CA ALA A 402 51.957 77.939 -30.680 0.00 0.00 ATOM 64 CA VAL A 403 52.914 74.659 -28.970 0.00 0.00 ATOM 65 CA THR A 404 55.859 72.362 -28.214 0.00 0.00 ATOM 66 CA SER A 405 55.946 68.564 -27.819 0.00 0.00 ATOM 67 CA ILE A 406 58.705 66.490 -26.194 0.00 0.00 ATOM 68 CA LEU A 407 59.005 62.728 -26.766 0.00 0.00 ATOM 69 CA ARG A 408 61.679 61.096 -24.598 0.00 0.00 ATOM 70 CA VAL A 409 62.839 57.806 -26.138 0.00 0.00 ATOM 71 CA ALA A 410 66.048 55.769 -25.778 0.00 0.00 ATOM 72 CA ALA A 411 69.484 56.624 -27.181 0.00 0.00 ATOM 73 CA GLU A 412 70.095 53.234 -28.798 0.00 0.00 ATOM 74 CA ASP A 413 66.683 53.206 -30.509 0.00 0.00 ATOM 75 CA TRP A 414 67.122 56.618 -32.177 0.00 0.00 ATOM 76 CA LYS A 415 70.203 55.257 -33.967 0.00 0.00 ATOM 77 CA LYS A 416 68.591 52.036 -35.227 0.00 0.00 ATOM 78 CA GLY A 417 66.590 53.874 -37.876 0.00 0.00 ATOM 79 CA ASP A 418 63.068 54.088 -36.452 0.00 0.00 ATOM 80 CA THR A 419 60.601 56.765 -37.612 0.00 0.00 ATOM 81 CA PHE A 420 58.616 58.824 -35.055 0.00 0.00 ATOM 82 CA SER A 421 55.285 60.566 -35.813 0.00 0.00 ATOM 83 CA CYS A 422 53.917 63.793 -34.258 0.00 0.00 ATOM 84 CA MET A 423 50.201 63.977 -35.104 0.00 0.00 ATOM 85 CA VAL A 424 48.499 67.342 -34.556 0.00 0.00 ATOM 86 CA GLY A 425 44.747 67.942 -34.680 0.00 0.00 ATOM 87 CA HIS A 426 43.101 71.327 -35.219 0.00 0.00 ATOM 88 CA GLU A 427 39.991 72.733 -36.924 0.00 0.00 ATOM 89 CA ALA A 428 41.785 74.749 -39.625 0.00 0.00 ATOM 90 CA LEU A 429 43.561 71.578 -40.799 0.00 0.00 ATOM 91 CA PRO A 430 42.605 69.918 -44.136 0.00 0.00 ATOM 92 CA LEU A 431 41.065 66.802 -42.559 0.00 0.00 ATOM 93 CA ALA A 432 41.212 68.037 -38.955 0.00 0.00 ATOM 94 CA PHE A 433 44.387 65.952 -38.719 0.00 0.00 ATOM 95 CA THR A 434 47.986 66.409 -39.879 0.00 0.00 ATOM 96 CA GLN A 435 51.112 64.292 -39.281 0.00 0.00 ATOM 97 CA LYS A 436 54.831 64.986 -39.782 0.00 0.00 ATOM 98 CA THR A 437 57.737 62.596 -39.123 0.00 0.00 ATOM 99 CA ILE A 438 61.367 62.522 -37.946 0.00 0.00 ATOM 100 CA ASP A 439 64.064 60.051 -39.014 0.00 0.00 ATOM 101 CA ARG A 440 67.817 59.760 -38.359 0.00 0.00 ATOM 102 CA LEU A 441 68.231 58.881 -42.043 0.00 0.00 ATOM 103 CA ALA A 442 68.453 62.301 -43.666 0.00 0.00 ATOM 104 CA GLY A 443 68.650 62.474 -47.439 0.00 0.00 ATOM 105 CA LYS A 444 69.098 65.938 -48.934 0.00 0.00 ATOM 106 CA PRO A 445 66.448 66.155 -51.705 0.00 0.00 ATOM 107 CA THR A 446 64.237 68.659 -49.855 0.00 0.00 ATOM 108 CA HIS A 447 61.946 67.299 -47.125 0.00 0.00 ATOM 109 CA VAL A 448 59.866 64.376 -48.390 0.00 0.00 ATOM 110 CA ASN A 449 57.023 62.624 -46.550 0.00 0.00 ATOM 111 CA VAL A 450 56.159 58.899 -46.437 0.00 0.00 ATOM 112 CA SER A 451 53.888 57.053 -48.887 0.00 0.00 ATOM 113 CA VAL A 452 50.218 56.048 -48.511 0.00 0.00 ATOM 114 CA VAL A 453 49.047 53.246 -46.207 0.00 0.00 ATOM 115 CA MET A 454 45.338 52.334 -46.443 0.00 0.00 ATOM 116 CA ALA A 455 42.857 53.134 -49.234 0.00 0.00 ATOM 117 CA GLU A 456 39.234 52.703 -50.347 0.00 0.00 ATOM 118 CA VAL A 457 38.212 52.585 -46.671 0.00 0.00 ATOM 119 CA ASP A 458 37.308 55.959 -45.163 0.00 0.00 ATOM 120 CA GLY A 459 34.329 54.797 -43.115 0.00 0.00 ATOM 121 CA THR A 460 31.221 55.826 -45.059 0.00 0.00 ATOM 122 CA CYS A 461 31.806 52.870 -47.395 0.00 0.00 ATOM 123 CA TYR A 462 32.544 49.902 -45.122 0.00 0.00 TER