HEADER IMMUNE SYSTEM 02-AUG-07 2QTJ TITLE Solution structure of human dimeric immunoglobulin A COMPND MOL_ID: 1; COMPND 2 MOLECULE: Kappa light chain IgA1; COMPND 3 CHAIN: L, M, N, O; EXPDTA SOLUTION SCATTERING DBREF 2QTJ L 1 214 PDB 2QTJ 2QTJ 1 214 SEQRES 1 L 107 ARG THR VAL ALA ALA PRO SER VAL PHE ILE PHE PRO PRO SEQRES 2 L 107 SER ASP GLU GLN LEU LYS SER GLY THR ALA SER VAL VAL SEQRES 3 L 107 CYS LEU LEU ASN ASN PHE TYR PRO ARG GLU ALA LYS VAL SEQRES 4 L 107 GLN TRP LYS VAL ASP ASN ALA LEU GLN SER GLY ASN SER SEQRES 5 L 107 GLN GLU SER VAL THR GLU GLN ASP SER LYS ASP SER THR SEQRES 6 L 107 TYR SER LEU SER SER THR LEU THR LEU SER LYS ALA ASP SEQRES 7 L 107 TYR GLU LYS HIS LYS VAL TYR ALA CYS GLU VAL THR HIS SEQRES 8 L 107 GLN GLY LEU SER SER PRO VAL THR LYS SER PHE ASN ARG SEQRES 9 L 107 GLY GLU CYS ATOM 1 CA ARG L 108 31.444 37.609 2.733 1.00 24.49 ATOM 2 CA THR L 109 28.013 38.240 1.126 1.00 29.53 ATOM 3 CA VAL L 110 27.158 41.634 -0.451 1.00 29.75 ATOM 4 CA ALA L 111 25.704 44.197 1.871 1.00 23.83 ATOM 5 CA ALA L 112 24.181 47.378 0.526 1.00 21.37 ATOM 6 CA PRO L 113 25.128 50.602 2.232 1.00 22.37 ATOM 7 CA SER L 114 23.014 52.894 4.404 1.00 26.25 ATOM 8 CA VAL L 115 23.533 56.401 2.975 1.00 23.61 ATOM 9 CA PHE L 116 23.431 59.644 4.949 1.00 24.26 ATOM 10 CA ILE L 117 24.158 63.245 3.924 1.00 27.56 ATOM 11 CA PHE L 118 25.035 66.130 6.270 1.00 34.05 ATOM 12 CA PRO L 119 24.883 69.904 5.515 1.00 42.24 ATOM 13 CA PRO L 120 27.663 72.377 6.678 1.00 36.96 ATOM 14 CA SER L 121 27.217 73.408 10.293 1.00 39.63 ATOM 15 CA ASP L 122 26.529 77.034 11.151 1.00 49.87 ATOM 16 CA GLU L 123 29.786 77.846 12.827 1.00 43.74 ATOM 17 CA GLN L 124 31.586 76.284 9.939 1.00 38.32 ATOM 18 CA LEU L 125 29.942 78.706 7.427 1.00 43.28 ATOM 19 CA LYS L 126 31.010 81.459 9.919 1.00 49.04 ATOM 20 CA SER L 127 34.682 80.660 8.957 1.00 49.80 ATOM 21 CA GLY L 128 33.934 81.157 5.261 1.00 47.11 ATOM 22 CA THR L 129 34.021 77.339 4.321 1.00 43.85 ATOM 23 CA ALA L 130 31.424 74.649 3.864 1.00 34.62 ATOM 24 CA SER L 131 32.048 70.884 4.085 1.00 27.40 ATOM 25 CA VAL L 132 29.210 68.606 2.964 1.00 24.83 ATOM 26 CA VAL L 133 29.578 64.927 4.061 1.00 21.58 ATOM 27 CA CYS L 134 27.968 61.838 2.530 1.00 19.24 ATOM 28 CA LEU L 135 28.209 58.608 4.596 1.00 20.22 ATOM 29 CA LEU L 136 27.868 55.086 3.217 1.00 20.07 ATOM 30 CA ASN L 137 27.661 52.856 6.277 1.00 21.10 ATOM 31 CA ASN L 138 28.361 49.166 6.504 1.00 21.31 ATOM 32 CA PHE L 139 28.729 47.583 3.133 1.00 24.82 ATOM 33 CA TYR L 140 30.494 44.722 1.360 1.00 24.60 ATOM 34 CA PRO L 141 32.423 44.538 -1.176 1.00 24.13 ATOM 35 CA ARG L 142 34.508 47.723 -0.723 1.00 29.02 ATOM 36 CA GLU L 143 33.971 49.102 -4.238 1.00 38.03 ATOM 37 CA ALA L 144 31.312 51.857 -4.407 1.00 31.79 ATOM 38 CA LYS L 145 31.017 55.134 -6.380 1.00 33.25 ATOM 39 CA VAL L 146 29.909 58.486 -4.863 1.00 33.79 ATOM 40 CA GLN L 147 28.938 61.294 -7.223 1.00 37.56 ATOM 41 CA TRP L 148 28.158 64.815 -6.073 1.00 33.14 ATOM 42 CA LYS L 149 25.693 66.958 -7.994 1.00 33.87 ATOM 43 CA VAL L 150 25.032 70.594 -6.988 1.00 38.45 ATOM 44 CA ASP L 151 22.026 72.135 -8.832 1.00 52.78 ATOM 45 CA ASN L 152 21.116 68.787 -10.271 1.00 62.57 ATOM 46 CA ALA L 153 23.517 67.334 -12.898 1.00 68.87 ATOM 47 CA LEU L 154 26.186 69.991 -12.302 1.00 64.52 ATOM 48 CA GLN L 155 28.073 67.112 -10.875 1.00 56.73 ATOM 49 CA SER L 156 31.416 67.978 -9.439 1.00 51.84 ATOM 50 CA GLY L 157 35.160 66.977 -9.123 1.00 52.14 ATOM 51 CA ASN L 158 36.309 68.620 -5.684 1.00 46.46 ATOM 52 CA SER L 159 35.688 65.868 -3.061 1.00 38.82 ATOM 53 CA GLN L 160 37.872 63.580 -0.934 1.00 35.88 ATOM 54 CA GLU L 161 37.087 60.064 0.359 1.00 30.57 ATOM 55 CA SER L 162 38.039 57.939 3.358 1.00 24.52 ATOM 56 CA VAL L 163 37.237 54.218 3.854 1.00 21.28 ATOM 57 CA THR L 164 37.594 52.430 7.147 1.00 26.66 ATOM 58 CA GLU L 165 39.374 49.002 7.450 1.00 29.01 ATOM 59 CA GLN L 166 37.259 45.817 7.616 1.00 23.36 ATOM 60 CA ASP L 167 35.216 45.462 10.764 1.00 23.58 ATOM 61 CA SER L 168 36.263 42.433 12.839 1.00 28.49 ATOM 62 CA LYS L 169 32.671 41.646 13.733 1.00 35.63 ATOM 63 CA ASP L 170 30.721 41.801 10.433 1.00 28.71 ATOM 64 CA SER L 171 33.413 42.285 7.739 1.00 22.47 ATOM 65 CA THR L 172 32.038 45.533 6.295 1.00 21.14 ATOM 66 CA TYR L 173 33.532 48.892 5.318 1.00 22.96 ATOM 67 CA SER L 174 32.113 52.371 5.790 1.00 20.50 ATOM 68 CA LEU L 175 33.079 55.371 3.613 1.00 18.39 ATOM 69 CA SER L 176 32.836 59.198 3.746 1.00 20.18 ATOM 70 CA SER L 177 33.005 61.650 0.919 1.00 22.83 ATOM 71 CA THR L 178 33.566 65.294 1.869 1.00 25.67 ATOM 72 CA LEU L 179 32.742 67.966 -0.656 1.00 31.29 ATOM 73 CA THR L 180 34.391 71.266 0.273 1.00 36.96 ATOM 74 CA LEU L 181 33.435 74.613 -1.158 1.00 41.68 ATOM 75 CA SER L 182 33.711 78.201 0.055 1.00 42.32 ATOM 76 CA LYS L 183 30.766 79.889 1.966 1.00 44.83 ATOM 77 CA ALA L 184 30.129 82.002 -1.190 1.00 49.35 ATOM 78 CA ASP L 185 30.127 78.964 -3.496 1.00 55.55 ATOM 79 CA TYR L 186 27.743 77.122 -1.231 1.00 51.76 ATOM 80 CA GLU L 187 25.527 80.288 -0.988 1.00 55.70 ATOM 81 CA LYS L 188 24.762 80.226 -4.630 1.00 52.94 ATOM 82 CA HIS L 189 23.415 76.759 -5.162 1.00 55.05 ATOM 83 CA LYS L 190 20.394 75.082 -3.511 1.00 52.83 ATOM 84 CA VAL L 191 20.120 71.285 -4.252 1.00 47.03 ATOM 85 CA TYR L 192 23.123 69.360 -2.901 1.00 38.28 ATOM 86 CA ALA L 193 23.070 65.623 -3.625 1.00 34.05 ATOM 87 CA CYS L 194 25.098 62.461 -3.066 1.00 33.19 ATOM 88 CA GLU L 195 24.471 59.647 -5.609 1.00 34.51 ATOM 89 CA VAL L 196 25.685 56.152 -4.697 1.00 28.87 ATOM 90 CA THR L 197 26.395 53.100 -6.803 1.00 27.94 ATOM 91 CA HIS L 198 27.258 49.763 -5.207 1.00 28.54 ATOM 92 CA GLN L 199 26.499 46.094 -6.059 1.00 33.17 ATOM 93 CA GLY L 200 23.951 45.472 -3.252 1.00 27.71 ATOM 94 CA LEU L 201 21.615 48.290 -4.320 1.00 25.11 ATOM 95 CA SER L 202 19.043 47.700 -7.105 1.00 34.19 ATOM 96 CA SER L 203 19.192 51.325 -8.240 1.00 35.61 ATOM 97 CA PRO L 204 21.671 54.227 -7.618 1.00 33.06 ATOM 98 CA VAL L 205 20.693 55.966 -4.371 1.00 34.47 ATOM 99 CA THR L 206 20.466 59.764 -3.941 1.00 35.46 ATOM 100 CA LYS L 207 20.361 61.721 -0.688 1.00 36.49 ATOM 101 CA SER L 208 19.787 65.430 -1.253 1.00 38.05 ATOM 102 CA PHE L 209 19.003 68.515 0.763 1.00 41.72 ATOM 103 CA ASN L 210 17.993 72.061 0.003 1.00 54.97 ATOM 104 CA ARG L 211 20.194 74.963 1.174 1.00 61.26 ATOM 105 CA GLY L 212 17.813 76.478 3.763 1.00 79.44 ATOM 106 CA GLU L 213 17.148 73.471 6.143 1.00 93.23 ATOM 107 CA CYS L 214 14.745 73.519 9.185 1.00101.74 TER