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 L 1 214 PDB 3CHN 3CHN 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 41.783 -50.811 28.319 1.00 24.49 ATOM 2 CA THR L 109 42.766 -48.800 31.440 1.00 29.53 ATOM 3 CA VAL L 110 45.224 -50.224 34.022 1.00 29.75 ATOM 4 CA ALA L 111 43.706 -52.296 36.757 1.00 23.83 ATOM 5 CA ALA L 112 45.739 -53.301 39.774 1.00 21.37 ATOM 6 CA PRO L 113 45.511 -56.892 40.892 1.00 22.37 ATOM 7 CA SER L 114 43.898 -58.351 44.009 1.00 26.25 ATOM 8 CA VAL L 115 46.544 -60.651 45.533 1.00 23.61 ATOM 9 CA PHE L 116 45.861 -63.806 47.533 1.00 24.26 ATOM 10 CA ILE L 117 48.214 -66.451 48.953 1.00 27.56 ATOM 11 CA PHE L 118 47.267 -70.013 49.958 1.00 34.05 ATOM 12 CA PRO L 119 49.253 -72.428 52.207 1.00 42.24 ATOM 13 CA PRO L 120 49.633 -76.218 51.375 1.00 36.96 ATOM 14 CA SER L 121 46.603 -78.214 52.453 1.00 39.63 ATOM 15 CA ASP L 122 46.954 -80.889 55.114 1.00 49.87 ATOM 16 CA GLU L 123 46.380 -83.907 52.961 1.00 43.74 ATOM 17 CA GLN L 124 48.838 -82.533 50.493 1.00 38.32 ATOM 18 CA LEU L 125 51.645 -82.435 53.136 1.00 43.28 ATOM 19 CA LYS L 126 50.558 -86.060 53.915 1.00 49.04 ATOM 20 CA SER L 127 51.912 -87.032 50.411 1.00 49.80 ATOM 21 CA GLY L 128 55.307 -85.501 51.181 1.00 47.11 ATOM 22 CA THR L 129 54.841 -82.331 48.902 1.00 43.85 ATOM 23 CA ALA L 130 53.777 -78.765 49.485 1.00 34.62 ATOM 24 CA SER L 131 52.379 -76.391 46.834 1.00 27.40 ATOM 25 CA VAL L 132 52.017 -72.733 47.827 1.00 24.83 ATOM 26 CA VAL L 133 49.796 -70.642 45.466 1.00 21.58 ATOM 27 CA CYS L 134 49.776 -66.869 44.975 1.00 19.24 ATOM 28 CA LEU L 135 46.803 -65.438 43.007 1.00 20.22 ATOM 29 CA LEU L 136 46.753 -62.081 41.232 1.00 20.07 ATOM 30 CA ASN L 137 43.132 -61.558 40.237 1.00 21.10 ATOM 31 CA ASN L 138 41.770 -59.283 37.567 1.00 21.31 ATOM 32 CA PHE L 139 44.367 -56.934 36.247 1.00 24.82 ATOM 33 CA TYR L 140 45.343 -55.029 33.106 1.00 24.60 ATOM 34 CA PRO L 141 47.991 -54.890 31.330 1.00 24.13 ATOM 35 CA ARG L 142 49.127 -58.549 31.449 1.00 29.02 ATOM 36 CA GLU L 143 52.712 -57.860 32.555 1.00 38.03 ATOM 37 CA ALA L 144 53.288 -58.421 36.302 1.00 31.79 ATOM 38 CA LYS L 145 56.182 -59.896 38.344 1.00 33.25 ATOM 39 CA VAL L 146 55.748 -62.411 41.216 1.00 33.79 ATOM 40 CA GLN L 147 58.691 -63.020 43.532 1.00 37.56 ATOM 41 CA TRP L 148 58.719 -65.687 46.219 1.00 33.14 ATOM 42 CA LYS L 149 60.719 -65.185 49.398 1.00 33.87 ATOM 43 CA VAL L 150 60.944 -67.942 52.047 1.00 38.45 ATOM 44 CA ASP L 151 62.551 -66.736 55.330 1.00 52.78 ATOM 45 CA ASN L 152 62.499 -63.181 54.119 1.00 62.57 ATOM 46 CA ALA L 153 64.881 -62.314 51.230 1.00 68.87 ATOM 47 CA LEU L 154 65.822 -65.950 50.573 1.00 64.52 ATOM 48 CA GLN L 155 63.894 -65.397 47.432 1.00 56.73 ATOM 49 CA SER L 156 63.576 -68.403 45.231 1.00 51.84 ATOM 50 CA GLY L 157 63.706 -69.782 41.598 1.00 52.14 ATOM 51 CA ASN L 158 61.380 -73.011 41.709 1.00 46.46 ATOM 52 CA SER L 159 57.889 -71.702 40.741 1.00 38.82 ATOM 53 CA GLN L 160 55.591 -72.030 37.717 1.00 35.88 ATOM 54 CA GLU L 161 53.012 -69.526 36.402 1.00 30.57 ATOM 55 CA SER L 162 49.722 -69.674 34.513 1.00 24.52 ATOM 56 CA VAL L 163 47.795 -66.685 33.068 1.00 21.28 ATOM 57 CA THR L 164 44.232 -66.885 31.869 1.00 26.66 ATOM 58 CA GLU L 165 43.116 -65.410 28.465 1.00 29.01 ATOM 59 CA GLN L 166 41.409 -61.986 28.392 1.00 23.36 ATOM 60 CA ASP L 167 37.988 -61.913 29.975 1.00 23.58 ATOM 61 CA SER L 168 35.244 -61.064 27.461 1.00 28.49 ATOM 62 CA LYS L 169 33.411 -58.930 29.992 1.00 35.63 ATOM 63 CA ASP L 170 36.077 -56.666 31.568 1.00 28.71 ATOM 64 CA SER L 171 39.262 -57.365 29.540 1.00 22.47 ATOM 65 CA THR L 172 41.440 -58.458 32.471 1.00 21.14 ATOM 66 CA TYR L 173 43.821 -61.351 33.125 1.00 22.96 ATOM 67 CA SER L 174 44.322 -63.371 36.289 1.00 20.50 ATOM 68 CA LEU L 175 47.564 -65.229 37.130 1.00 18.39 ATOM 69 CA SER L 176 48.739 -67.995 39.516 1.00 20.18 ATOM 70 CA SER L 177 52.218 -68.758 40.677 1.00 22.83 ATOM 71 CA THR L 178 52.748 -72.148 42.326 1.00 25.67 ATOM 72 CA LEU L 179 55.824 -72.668 44.438 1.00 31.29 ATOM 73 CA THR L 180 56.477 -76.374 44.997 1.00 36.96 ATOM 74 CA LEU L 181 58.764 -77.769 47.640 1.00 41.68 ATOM 75 CA SER L 182 58.975 -81.073 49.500 1.00 42.32 ATOM 76 CA LYS L 183 57.218 -81.534 52.946 1.00 44.83 ATOM 77 CA ALA L 184 60.712 -81.482 54.564 1.00 49.35 ATOM 78 CA ASP L 185 61.749 -78.289 52.755 1.00 55.55 ATOM 79 CA TYR L 186 58.541 -76.571 53.741 1.00 51.76 ATOM 80 CA GLU L 187 58.977 -77.841 57.373 1.00 55.70 ATOM 81 CA LYS L 188 62.123 -75.908 57.840 1.00 52.94 ATOM 82 CA HIS L 189 61.112 -72.400 56.951 1.00 55.05 ATOM 83 CA LYS L 190 58.393 -70.217 58.533 1.00 52.83 ATOM 84 CA VAL L 191 57.677 -66.950 56.568 1.00 47.03 ATOM 85 CA TYR L 192 56.384 -67.669 53.052 1.00 38.28 ATOM 86 CA ALA L 193 55.720 -64.571 50.941 1.00 34.05 ATOM 87 CA CYS L 194 54.515 -63.530 47.493 1.00 33.19 ATOM 88 CA GLU L 195 55.718 -60.074 46.317 1.00 34.51 ATOM 89 CA VAL L 196 53.905 -58.496 43.359 1.00 28.87 ATOM 90 CA THR L 197 54.901 -55.752 40.965 1.00 27.94 ATOM 91 CA HIS L 198 52.447 -54.382 38.409 1.00 28.54 ATOM 92 CA GLN L 199 51.778 -50.907 36.912 1.00 33.17 ATOM 93 CA GLY L 200 48.471 -50.229 38.746 1.00 27.71 ATOM 94 CA LEU L 201 49.957 -50.643 42.233 1.00 25.11 ATOM 95 CA SER L 202 51.763 -47.704 43.912 1.00 34.19 ATOM 96 CA SER L 203 54.105 -50.014 45.817 1.00 35.61 ATOM 97 CA PRO L 204 55.069 -53.742 45.457 1.00 33.06 ATOM 98 CA VAL L 205 52.514 -55.832 47.363 1.00 34.47 ATOM 99 CA THR L 206 53.411 -58.706 49.729 1.00 35.46 ATOM 100 CA LYS L 207 51.107 -61.424 51.042 1.00 36.49 ATOM 101 CA SER L 208 52.810 -63.643 53.608 1.00 38.05 ATOM 102 CA PHE L 209 51.893 -66.335 56.079 1.00 41.72 ATOM 103 CA ASN L 210 53.627 -68.122 58.903 1.00 54.97 ATOM 104 CA ARG L 211 54.031 -71.925 58.791 1.00 61.26 ATOM 105 CA GLY L 212 51.710 -72.833 61.698 1.00 79.44 ATOM 106 CA GLU L 213 48.342 -71.213 60.612 1.00 93.23 ATOM 107 CA CYS L 214 45.086 -71.204 62.717 1.00101.74 TER