HEADER IMMUNE SYSTEM 10-MAR-08 3CHN TITLE Solution structure of human secretory IgA1 COMPND MOL_ID: 2; COMPND 2 MOLECULE: Ig alpha-1 chain C region; COMPND 3 CHAIN: A, B, D, C; EXPDTA SOLUTION SCATTERING DBREF 3CHN C 123 475 UNP P01876 IGHA1_HUMAN 1 353 SEQRES 1 C 122 GLN VAL LYS LEU LEU GLU GLN SER GLY ALA GLU VAL LYS SEQRES 2 C 122 LYS PRO GLY ALA SER VAL LYS VAL SER CYS LYS ALA SER SEQRES 3 C 122 GLY TYR SER PHE THR SER TYR GLY LEU HIS TRP VAL ARG SEQRES 4 C 122 GLN ALA PRO GLY GLN ARG LEU GLU TRP MET GLY TRP ILE SEQRES 5 C 122 SER ALA GLY THR GLY ASN THR LYS TYR SER GLN LYS PHE SEQRES 6 C 122 ARG GLY ARG VAL THR PHE THR ARG ASP THR SER ALA THR SEQRES 7 C 122 THR ALA TYR MET GLY LEU SER SER LEU ARG PRO GLU ASP SEQRES 8 C 122 THR ALA VAL TYR TYR CYS ALA ARG ASP PRO TYR GLY GLY SEQRES 9 C 122 GLY LYS SER GLU PHE ASP TYR TRP GLY GLN GLY THR LEU SEQRES 10 C 122 VAL THR VAL SER SER ATOM 1 CA GLN C 1 96.481 127.690 -43.208 0.00 0.00 ATOM 2 CA VAL C 2 95.824 131.430 -42.648 0.00 0.00 ATOM 3 CA LYS C 3 92.504 130.093 -43.897 0.00 0.00 ATOM 4 CA LEU C 4 92.656 127.750 -46.995 0.00 0.00 ATOM 5 CA LEU C 5 90.819 129.931 -49.546 0.00 0.00 ATOM 6 CA GLU C 6 90.773 133.618 -48.339 0.00 0.00 ATOM 7 CA GLN C 7 89.114 136.619 -49.978 0.00 0.00 ATOM 8 CA SER C 8 89.655 140.420 -50.191 0.00 0.00 ATOM 9 CA GLY C 9 87.193 142.345 -47.935 0.00 0.00 ATOM 10 CA ALA C 10 84.257 144.542 -48.864 0.00 0.00 ATOM 11 CA GLU C 11 83.456 147.089 -50.883 0.00 0.00 ATOM 12 CA VAL C 12 81.204 149.874 -51.918 0.00 0.00 ATOM 13 CA LYS C 13 81.255 150.795 -55.592 0.00 0.00 ATOM 14 CA LYS C 14 79.212 153.457 -57.416 0.00 0.00 ATOM 15 CA PRO C 15 76.689 152.183 -60.094 0.00 0.00 ATOM 16 CA GLY C 16 78.582 151.990 -63.453 0.00 0.00 ATOM 17 CA ALA C 17 81.966 151.201 -61.811 0.00 0.00 ATOM 18 CA SER C 18 83.875 147.890 -61.775 0.00 0.00 ATOM 19 CA VAL C 19 84.884 145.732 -58.768 0.00 0.00 ATOM 20 CA LYS C 20 87.814 143.277 -58.538 0.00 0.00 ATOM 21 CA VAL C 21 87.526 140.508 -55.920 0.00 0.00 ATOM 22 CA SER C 22 90.557 138.283 -55.095 0.00 0.00 ATOM 23 CA CYS C 23 90.820 134.777 -53.662 0.00 0.00 ATOM 24 CA LYS C 24 94.230 133.609 -52.296 0.00 0.00 ATOM 25 CA ALA C 25 94.707 129.793 -52.024 0.00 0.00 ATOM 26 CA SER C 26 97.014 128.562 -49.165 0.00 0.00 ATOM 27 CA GLY C 27 97.989 124.989 -48.029 0.00 0.00 ATOM 28 CA TYR C 28 97.139 122.997 -51.222 0.00 0.00 ATOM 29 CA SER C 29 98.764 122.900 -54.733 0.00 0.00 ATOM 30 CA PHE C 30 97.030 125.885 -56.474 0.00 0.00 ATOM 31 CA THR C 31 97.502 124.724 -60.148 0.00 0.00 ATOM 32 CA SER C 32 95.999 121.201 -59.535 0.00 0.00 ATOM 33 CA TYR C 33 92.368 122.476 -59.054 0.00 0.00 ATOM 34 CA GLY C 34 89.846 124.853 -60.613 0.00 0.00 ATOM 35 CA LEU C 35 88.091 127.673 -58.698 0.00 0.00 ATOM 36 CA HIS C 36 84.374 128.444 -59.058 0.00 0.00 ATOM 37 CA TRP C 37 82.811 131.930 -58.412 0.00 0.00 ATOM 38 CA VAL C 38 79.313 132.099 -56.843 0.00 0.00 ATOM 39 CA ARG C 39 77.237 135.013 -55.511 0.00 0.00 ATOM 40 CA GLN C 40 74.331 135.396 -53.068 0.00 0.00 ATOM 41 CA ALA C 41 72.162 138.546 -53.317 0.00 0.00 ATOM 42 CA PRO C 42 70.241 139.430 -50.075 0.00 0.00 ATOM 43 CA GLY C 43 67.378 136.950 -49.388 0.00 0.00 ATOM 44 CA GLN C 44 68.158 135.039 -52.590 0.00 0.00 ATOM 45 CA ARG C 45 69.574 131.693 -53.664 0.00 0.00 ATOM 46 CA LEU C 46 73.221 131.167 -54.622 0.00 0.00 ATOM 47 CA GLU C 47 73.955 131.927 -58.291 0.00 0.00 ATOM 48 CA TRP C 48 76.887 130.344 -60.152 0.00 0.00 ATOM 49 CA MET C 49 78.889 132.987 -62.167 0.00 0.00 ATOM 50 CA GLY C 50 81.927 131.155 -63.611 0.00 0.00 ATOM 51 CA TRP C 51 85.007 128.931 -63.173 0.00 0.00 ATOM 52 CA ILE C 52 88.776 129.221 -63.868 0.00 0.00 ATOM 53 CA SER C 53 91.339 126.376 -64.218 0.00 0.00 ATOM 54 CA ALA C 54 94.406 127.532 -62.130 0.00 0.00 ATOM 55 CA GLY C 55 96.745 125.371 -64.315 0.00 0.00 ATOM 56 CA THR C 56 95.734 126.531 -67.875 0.00 0.00 ATOM 57 CA GLY C 57 93.985 129.894 -67.111 0.00 0.00 ATOM 58 CA ASN C 58 90.913 128.615 -69.096 0.00 0.00 ATOM 59 CA THR C 59 87.573 130.099 -68.383 0.00 0.00 ATOM 60 CA LYS C 60 83.891 129.142 -68.280 0.00 0.00 ATOM 61 CA TYR C 61 81.047 131.456 -67.309 0.00 0.00 ATOM 62 CA SER C 62 77.302 131.955 -66.955 0.00 0.00 ATOM 63 CA GLN C 63 75.832 133.754 -70.007 0.00 0.00 ATOM 64 CA LYS C 64 73.791 135.883 -67.509 0.00 0.00 ATOM 65 CA PHE C 65 77.161 137.787 -67.063 0.00 0.00 ATOM 66 CA ARG C 66 78.067 137.720 -70.833 0.00 0.00 ATOM 67 CA GLY C 67 80.322 140.666 -71.724 0.00 0.00 ATOM 68 CA ARG C 68 80.857 141.992 -68.127 0.00 0.00 ATOM 69 CA VAL C 69 82.662 139.259 -66.069 0.00 0.00 ATOM 70 CA THR C 70 86.448 138.434 -66.304 0.00 0.00 ATOM 71 CA PHE C 71 88.424 135.637 -64.488 0.00 0.00 ATOM 72 CA THR C 72 92.215 135.827 -64.003 0.00 0.00 ATOM 73 CA ARG C 73 94.770 133.848 -61.921 0.00 0.00 ATOM 74 CA ASP C 74 98.242 134.953 -60.749 0.00 0.00 ATOM 75 CA THR C 75 99.854 131.506 -60.569 0.00 0.00 ATOM 76 CA SER C 76 103.027 132.799 -58.718 0.00 0.00 ATOM 77 CA ALA C 77 101.047 134.700 -55.970 0.00 0.00 ATOM 78 CA THR C 78 98.558 131.766 -55.929 0.00 0.00 ATOM 79 CA THR C 79 95.566 134.144 -56.206 0.00 0.00 ATOM 80 CA ALA C 80 92.539 134.076 -58.541 0.00 0.00 ATOM 81 CA TYR C 81 90.447 137.203 -59.305 0.00 0.00 ATOM 82 CA MET C 82 87.032 137.968 -60.695 0.00 0.00 ATOM 83 CA GLY C 83 86.398 141.347 -62.349 0.00 0.00 ATOM 84 CA LEU C 84 82.735 142.513 -62.589 0.00 0.00 ATOM 85 CA SER C 85 82.106 145.587 -64.818 0.00 0.00 ATOM 86 CA SER C 86 79.122 147.963 -65.316 0.00 0.00 ATOM 87 CA LEU C 87 77.881 147.559 -61.735 0.00 0.00 ATOM 88 CA ARG C 88 74.123 147.874 -61.160 0.00 0.00 ATOM 89 CA PRO C 89 72.408 148.140 -57.688 0.00 0.00 ATOM 90 CA GLU C 90 71.274 144.440 -58.054 0.00 0.00 ATOM 91 CA ASP C 91 74.973 143.333 -58.009 0.00 0.00 ATOM 92 CA THR C 92 74.888 144.060 -54.203 0.00 0.00 ATOM 93 CA ALA C 93 75.668 140.522 -52.999 0.00 0.00 ATOM 94 CA VAL C 94 78.240 138.344 -51.202 0.00 0.00 ATOM 95 CA TYR C 95 80.800 136.989 -53.749 0.00 0.00 ATOM 96 CA TYR C 96 82.343 133.619 -52.874 0.00 0.00 ATOM 97 CA CYS C 97 85.129 131.729 -54.548 0.00 0.00 ATOM 98 CA ALA C 98 84.866 127.939 -53.981 0.00 0.00 ATOM 99 CA ARG C 99 87.126 125.038 -54.965 0.00 0.00 ATOM 100 CA ASP C 100 86.500 122.479 -57.754 0.00 0.00 ATOM 101 CA PRO C 101 87.980 119.229 -56.185 0.00 0.00 ATOM 102 CA TYR C 102 88.776 117.721 -59.650 0.00 0.00 ATOM 103 CA GLY C 103 89.883 120.616 -61.980 0.00 0.00 ATOM 104 CA GLY C 104 87.237 119.848 -64.700 0.00 0.00 ATOM 105 CA GLY C 105 84.684 122.713 -64.249 0.00 0.00 ATOM 106 CA LYS C 106 81.533 120.735 -63.356 0.00 0.00 ATOM 107 CA SER C 107 81.615 119.664 -59.720 0.00 0.00 ATOM 108 CA GLU C 108 80.302 120.087 -56.183 0.00 0.00 ATOM 109 CA PHE C 109 82.452 122.690 -54.275 0.00 0.00 ATOM 110 CA ASP C 110 84.418 121.248 -51.277 0.00 0.00 ATOM 111 CA TYR C 111 86.158 124.432 -49.852 0.00 0.00 ATOM 112 CA TRP C 112 84.590 127.887 -49.870 0.00 0.00 ATOM 113 CA GLY C 113 86.191 131.282 -49.327 0.00 0.00 ATOM 114 CA GLN C 114 84.532 133.494 -46.650 0.00 0.00 ATOM 115 CA GLY C 115 82.723 135.922 -49.003 0.00 0.00 ATOM 116 CA THR C 116 83.211 139.612 -49.871 0.00 0.00 ATOM 117 CA LEU C 117 80.159 141.822 -49.783 0.00 0.00 ATOM 118 CA VAL C 118 80.155 144.309 -52.682 0.00 0.00 ATOM 119 CA THR C 119 77.550 147.018 -52.172 0.00 0.00 ATOM 120 CA VAL C 120 76.633 149.099 -55.253 0.00 0.00 ATOM 121 CA SER C 121 75.554 152.641 -54.126 0.00 0.00 ATOM 122 CA SER C 122 75.653 156.464 -54.631 0.00 0.00 TER