HEADER IMMUNE SYSTEM 10-MAR-08 3CHN TITLE Solution structure of human secretory IgA1 COMPND MOL_ID: 1; COMPND 2 MOLECULE: Immunoglobulin kappa light chain; COMPND 3 CHAIN: L, M, N, O; EXPDTA SOLUTION SCATTERING DBREF 3CHN O 1 214 PDB 3CHN 3CHN 1 214 SEQRES 1 O 107 ARG THR VAL ALA ALA PRO SER VAL PHE ILE PHE PRO PRO SEQRES 2 O 107 SER ASP GLU GLN LEU LYS SER GLY THR ALA SER VAL VAL SEQRES 3 O 107 CYS LEU LEU ASN ASN PHE TYR PRO ARG GLU ALA LYS VAL SEQRES 4 O 107 GLN TRP LYS VAL ASP ASN ALA LEU GLN SER GLY ASN SER SEQRES 5 O 107 GLN GLU SER VAL THR GLU GLN ASP SER LYS ASP SER THR SEQRES 6 O 107 TYR SER LEU SER SER THR LEU THR LEU SER LYS ALA ASP SEQRES 7 O 107 TYR GLU LYS HIS LYS VAL TYR ALA CYS GLU VAL THR HIS SEQRES 8 O 107 GLN GLY LEU SER SER PRO VAL THR LYS SER PHE ASN ARG SEQRES 9 O 107 GLY GLU CYS ATOM 1 CA ARG O 108 61.798 123.489 -27.913 1.00 24.49 ATOM 2 CA THR O 109 60.107 124.398 -24.585 1.00 29.53 ATOM 3 CA VAL O 110 59.101 128.015 -23.793 1.00 29.75 ATOM 4 CA ALA O 111 61.738 130.127 -22.166 1.00 23.83 ATOM 5 CA ALA O 112 60.878 133.498 -20.696 1.00 21.37 ATOM 6 CA PRO O 113 63.185 136.368 -21.496 1.00 22.37 ATOM 7 CA SER O 114 65.585 138.239 -19.221 1.00 26.25 ATOM 8 CA VAL O 115 64.836 141.946 -19.793 1.00 23.61 ATOM 9 CA PHE O 116 67.340 144.789 -19.530 1.00 24.26 ATOM 10 CA ILE O 117 67.014 148.514 -20.278 1.00 27.56 ATOM 11 CA PHE O 118 69.888 150.937 -20.972 1.00 34.05 ATOM 12 CA PRO O 119 69.800 154.786 -20.827 1.00 42.24 ATOM 13 CA PRO O 120 71.559 157.012 -23.497 1.00 36.96 ATOM 14 CA SER O 121 75.261 157.390 -22.809 1.00 39.63 ATOM 15 CA ASP O 122 76.701 160.808 -22.027 1.00 49.87 ATOM 16 CA GLU O 123 78.702 161.308 -25.160 1.00 43.74 ATOM 17 CA GLN O 124 75.708 160.280 -27.160 1.00 38.32 ATOM 18 CA LEU O 125 73.559 163.108 -25.655 1.00 43.28 ATOM 19 CA LYS O 126 76.566 165.380 -26.529 1.00 49.04 ATOM 20 CA SER O 127 75.718 164.762 -30.262 1.00 49.80 ATOM 21 CA GLY O 128 72.127 165.905 -29.749 1.00 47.11 ATOM 22 CA THR O 129 70.536 162.311 -29.937 1.00 43.85 ATOM 23 CA ALA O 130 69.442 159.745 -27.406 1.00 34.62 ATOM 24 CA SER O 131 69.036 156.002 -28.058 1.00 27.40 ATOM 25 CA VAL O 132 67.349 153.958 -25.321 1.00 24.83 ATOM 26 CA VAL O 133 67.799 150.142 -25.662 1.00 21.58 ATOM 27 CA CYS O 134 65.645 147.372 -24.187 1.00 19.24 ATOM 28 CA LEU O 135 67.123 143.829 -24.330 1.00 20.22 ATOM 29 CA LEU O 136 65.124 140.608 -24.119 1.00 20.07 ATOM 30 CA ASN O 137 67.721 137.871 -23.739 1.00 21.10 ATOM 31 CA ASN O 138 67.338 134.195 -24.464 1.00 21.31 ATOM 32 CA PHE O 139 63.773 133.237 -25.067 1.00 24.82 ATOM 33 CA TYR O 140 61.641 130.734 -26.973 1.00 24.60 ATOM 34 CA PRO O 141 59.243 131.001 -29.063 1.00 24.13 ATOM 35 CA ARG O 142 60.388 134.052 -31.080 1.00 29.02 ATOM 36 CA GLU O 143 57.142 136.034 -30.754 1.00 38.03 ATOM 37 CA ALA O 144 57.290 138.776 -28.081 1.00 31.79 ATOM 38 CA LYS O 145 55.910 142.350 -27.876 1.00 33.25 ATOM 39 CA VAL O 146 57.921 145.382 -26.637 1.00 33.79 ATOM 40 CA GLN O 147 56.034 148.564 -25.786 1.00 37.56 ATOM 41 CA TRP O 148 57.734 151.827 -24.896 1.00 33.14 ATOM 42 CA LYS O 149 56.068 154.275 -22.534 1.00 33.87 ATOM 43 CA VAL O 150 57.653 157.674 -21.769 1.00 38.45 ATOM 44 CA ASP O 151 55.916 159.519 -18.871 1.00 52.78 ATOM 45 CA ASN O 152 53.852 156.480 -18.093 1.00 62.57 ATOM 46 CA ALA O 153 51.172 155.513 -20.673 1.00 68.87 ATOM 47 CA LEU O 154 52.403 158.021 -23.269 1.00 64.52 ATOM 48 CA GLN O 155 53.418 154.934 -25.094 1.00 56.73 ATOM 49 CA SER O 156 55.199 155.533 -28.325 1.00 51.84 ATOM 50 CA GLY O 157 55.577 154.489 -32.054 1.00 52.14 ATOM 51 CA ASN O 158 59.319 155.497 -32.961 1.00 46.46 ATOM 52 CA SER O 159 61.368 152.326 -32.206 1.00 38.82 ATOM 53 CA GLN O 160 63.197 149.698 -34.273 1.00 35.88 ATOM 54 CA GLU O 161 63.795 146.009 -33.447 1.00 30.57 ATOM 55 CA SER O 162 66.430 143.386 -34.227 1.00 24.52 ATOM 56 CA VAL O 163 66.205 139.636 -33.435 1.00 21.28 ATOM 57 CA THR O 164 69.148 137.296 -33.603 1.00 26.66 ATOM 58 CA GLU O 165 68.958 133.867 -35.397 1.00 29.01 ATOM 59 CA GLN O 166 68.419 130.704 -33.310 1.00 23.36 ATOM 60 CA ASP O 167 71.318 129.797 -31.074 1.00 23.58 ATOM 61 CA SER O 168 72.889 126.449 -32.019 1.00 28.49 ATOM 62 CA LYS O 169 73.394 125.518 -28.385 1.00 35.63 ATOM 63 CA ASP O 170 70.052 126.254 -26.651 1.00 28.71 ATOM 64 CA SER O 171 67.666 127.206 -29.503 1.00 22.47 ATOM 65 CA THR O 172 66.731 130.658 -28.190 1.00 21.14 ATOM 66 CA TYR O 173 66.464 134.137 -29.703 1.00 22.96 ATOM 67 CA SER O 174 67.447 137.476 -28.218 1.00 20.50 ATOM 68 CA LEU O 175 65.903 140.817 -29.288 1.00 18.39 ATOM 69 CA SER O 176 66.691 144.560 -28.994 1.00 20.18 ATOM 70 CA SER O 177 64.359 147.471 -29.315 1.00 22.83 ATOM 71 CA THR O 178 65.972 150.891 -29.777 1.00 25.67 ATOM 72 CA LEU O 179 63.911 153.967 -29.090 1.00 31.29 ATOM 73 CA THR O 180 65.513 157.049 -30.637 1.00 36.96 ATOM 74 CA LEU O 181 64.634 160.599 -29.736 1.00 41.68 ATOM 75 CA SER O 182 66.479 163.915 -29.893 1.00 42.32 ATOM 76 CA LYS O 183 68.461 165.238 -26.813 1.00 44.83 ATOM 77 CA ALA O 184 65.690 167.876 -26.357 1.00 49.35 ATOM 78 CA ASP O 185 62.891 165.295 -26.537 1.00 55.55 ATOM 79 CA TYR O 186 64.634 163.084 -24.035 1.00 51.76 ATOM 80 CA GLU O 187 65.287 166.158 -21.770 1.00 55.70 ATOM 81 CA LYS O 188 61.648 166.739 -21.242 1.00 52.94 ATOM 82 CA HIS O 189 60.428 163.423 -19.970 1.00 55.05 ATOM 83 CA LYS O 190 61.554 161.480 -16.869 1.00 52.83 ATOM 84 CA VAL O 191 60.141 157.875 -16.683 1.00 47.03 ATOM 85 CA TYR O 192 61.324 155.740 -19.616 1.00 38.28 ATOM 86 CA ALA O 193 59.950 152.191 -19.651 1.00 34.05 ATOM 87 CA CYS O 194 60.072 148.977 -21.674 1.00 33.19 ATOM 88 CA GLU O 195 57.040 146.659 -21.244 1.00 34.51 ATOM 89 CA VAL O 196 57.399 143.056 -22.437 1.00 28.87 ATOM 90 CA THR O 197 54.836 140.426 -23.313 1.00 27.94 ATOM 91 CA HIS O 198 55.871 136.857 -24.111 1.00 28.54 ATOM 92 CA GLN O 199 54.336 133.398 -23.449 1.00 33.17 ATOM 93 CA GLY O 200 56.817 132.290 -20.733 1.00 27.71 ATOM 94 CA LEU O 201 56.114 135.254 -18.439 1.00 25.11 ATOM 95 CA SER O 202 53.108 135.165 -16.057 1.00 34.19 ATOM 96 CA SER O 203 52.642 138.932 -16.237 1.00 35.61 ATOM 97 CA PRO O 204 53.927 141.678 -18.641 1.00 33.06 ATOM 98 CA VAL O 205 57.359 142.817 -17.434 1.00 34.47 ATOM 99 CA THR O 206 58.438 146.477 -17.142 1.00 35.46 ATOM 100 CA LYS O 207 61.970 147.830 -16.803 1.00 36.49 ATOM 101 CA SER O 208 62.032 151.581 -16.227 1.00 38.05 ATOM 102 CA PHE O 209 64.503 154.260 -15.279 1.00 41.72 ATOM 103 CA ASN O 210 64.320 157.884 -14.280 1.00 54.97 ATOM 104 CA ARG O 211 66.125 160.535 -16.368 1.00 61.26 ATOM 105 CA GLY O 212 68.778 161.568 -13.809 1.00 79.44 ATOM 106 CA GLU O 213 70.542 158.187 -13.027 1.00 93.23 ATOM 107 CA CYS O 214 73.381 157.700 -10.435 1.00101.74 TER