HEADER IMMUNE SYSTEM 10-MAR-08 3CHN TITLE Solution structure of human secretory IgA1 COMPND MOL_ID: 4; COMPND 2 MOLECULE: Secretory component; COMPND 3 CHAIN: S; EXPDTA SOLUTION SCATTERING DBREF 3CHN S 1 585 UNP P01833 PIGR_HUMAN 19 603 SEQRES 1 S 112 GLN GLY PRO GLY LEU LEU ASN ASP THR LYS VAL TYR THR SEQRES 2 S 112 VAL ASP LEU GLY ARG THR VAL THR ILE ASN CYS PRO PHE SEQRES 3 S 112 LYS THR GLU ASN ALA GLN LYS ARG LYS SER LEU TYR LYS SEQRES 4 S 112 GLN ILE GLY LEU TYR PRO VAL LEU VAL ILE ASP SER SER SEQRES 5 S 112 GLY TYR VAL ASN PRO ASN TYR THR GLY ARG ILE ARG LEU SEQRES 6 S 112 ASP ILE GLN GLY THR GLY GLN LEU LEU PHE SER VAL VAL SEQRES 7 S 112 ILE ASN GLN LEU ARG LEU SER ASP ALA GLY GLN TYR LEU SEQRES 8 S 112 CYS GLN ALA GLY ASP ASP SER ASN SER ASN LYS LYS ASN SEQRES 9 S 112 ALA ASP LEU GLN VAL LEU LYS PRO ATOM 1 CA GLN S 111 54.063 11.431 -9.343 1.00 0.00 ATOM 2 CA GLY S 112 54.145 13.930 -12.489 1.00 0.00 ATOM 3 CA PRO S 113 51.061 16.643 -12.356 1.00 0.00 ATOM 4 CA GLY S 114 52.375 18.681 -9.338 1.00 0.00 ATOM 5 CA LEU S 115 55.656 18.199 -7.361 1.00 0.00 ATOM 6 CA LEU S 116 58.713 20.583 -8.221 1.00106.80 ATOM 7 CA ASN S 117 59.727 18.652 -11.270 1.00 78.59 ATOM 8 CA ASP S 118 57.903 18.201 -14.539 1.00104.63 ATOM 9 CA THR S 119 58.702 18.058 -18.217 1.00110.37 ATOM 10 CA LYS S 120 59.946 21.446 -19.241 1.00 93.25 ATOM 11 CA VAL S 121 58.550 21.020 -22.680 1.00 86.14 ATOM 12 CA TYR S 122 56.165 18.542 -24.154 1.00 84.71 ATOM 13 CA THR S 123 55.601 18.132 -27.856 1.00 91.19 ATOM 14 CA VAL S 124 52.718 16.355 -29.497 1.00 49.12 ATOM 15 CA ASP S 125 50.948 16.036 -32.827 1.00120.23 ATOM 16 CA LEU S 126 47.479 17.444 -33.091 1.00205.62 ATOM 17 CA GLY S 127 45.255 14.388 -32.885 1.00128.15 ATOM 18 CA ARG S 128 47.259 12.667 -30.159 1.00178.05 ATOM 19 CA THR S 129 46.671 12.578 -26.435 1.00105.83 ATOM 20 CA VAL S 130 49.310 13.679 -24.002 1.00 91.30 ATOM 21 CA THR S 131 50.073 12.981 -20.391 1.00 29.04 ATOM 22 CA ILE S 132 51.933 15.312 -18.088 1.00106.98 ATOM 23 CA ASN S 133 53.336 14.080 -14.819 1.00 96.12 ATOM 24 CA CYS S 134 54.507 16.319 -12.012 1.00 55.81 ATOM 25 CA PRO S 135 56.090 15.045 -8.862 1.00149.28 ATOM 26 CA PHE S 136 55.531 16.595 -5.419 1.00 81.21 ATOM 27 CA LYS S 137 56.209 16.138 -1.666 1.00 90.90 ATOM 28 CA THR S 138 54.270 14.948 1.408 1.00125.02 ATOM 29 CA GLU S 139 52.694 18.188 2.596 1.00 78.69 ATOM 30 CA ASN S 140 52.065 18.540 -1.043 1.00 59.00 ATOM 31 CA ALA S 141 50.290 15.210 -1.042 1.00 47.52 ATOM 32 CA GLN S 142 47.366 16.721 0.801 1.00 67.10 ATOM 33 CA LYS S 143 47.207 20.048 -0.993 1.00 94.73 ATOM 34 CA ARG S 144 45.215 20.935 -4.085 1.00130.54 ATOM 35 CA LYS S 145 46.829 20.099 -7.403 1.00141.81 ATOM 36 CA SER S 146 46.192 22.198 -10.457 1.00 52.42 ATOM 37 CA LEU S 147 47.026 22.654 -14.117 1.00140.72 ATOM 38 CA TYR S 148 46.670 26.139 -15.511 1.00 61.10 ATOM 39 CA LYS S 149 47.457 28.153 -18.606 1.00 41.04 ATOM 40 CA GLN S 150 49.747 31.125 -18.295 1.00112.25 ATOM 41 CA ILE S 151 48.978 34.543 -19.776 1.00 99.47 ATOM 42 CA GLY S 152 46.829 37.307 -18.478 1.00 65.04 ATOM 43 CA LEU S 153 46.645 38.470 -14.928 1.00 62.26 ATOM 44 CA TYR S 154 46.099 35.026 -13.591 1.00254.14 ATOM 45 CA PRO S 155 47.029 31.675 -14.913 1.00105.07 ATOM 46 CA VAL S 156 43.693 30.099 -15.727 1.00 41.04 ATOM 47 CA LEU S 157 43.027 26.825 -13.995 1.00120.45 ATOM 48 CA VAL S 158 42.023 24.271 -16.591 1.00116.22 ATOM 49 CA ILE S 159 41.621 21.370 -14.169 1.00113.11 ATOM 50 CA ASP S 160 42.052 20.964 -10.426 1.00145.92 ATOM 51 CA SER S 161 42.138 18.136 -7.892 1.00 97.08 ATOM 52 CA SER S 162 39.386 20.073 -6.129 1.00 94.97 ATOM 53 CA GLY S 163 36.774 18.732 -8.494 1.00 32.98 ATOM 54 CA TYR S 164 36.907 21.699 -10.833 1.00 57.19 ATOM 55 CA VAL S 165 37.050 21.094 -14.556 1.00 50.74 ATOM 56 CA ASN S 166 37.061 23.833 -17.178 1.00102.75 ATOM 57 CA PRO S 167 34.493 23.591 -19.873 1.00 67.79 ATOM 58 CA ASN S 168 37.154 23.493 -22.529 1.00 47.79 ATOM 59 CA TYR S 169 38.721 20.538 -20.752 1.00169.28 ATOM 60 CA THR S 170 35.544 18.828 -19.576 1.00120.96 ATOM 61 CA GLY S 171 35.605 15.313 -20.970 1.00 31.82 ATOM 62 CA ARG S 172 38.830 16.095 -22.825 1.00204.45 ATOM 63 CA ILE S 173 41.163 15.794 -19.878 1.00125.57 ATOM 64 CA ARG S 174 41.654 14.206 -16.483 1.00115.15 ATOM 65 CA LEU S 175 43.882 14.971 -13.522 1.00111.57 ATOM 66 CA ASP S 176 44.796 12.126 -11.210 1.00 88.73 ATOM 67 CA ILE S 177 46.525 12.370 -7.888 1.00 91.56 ATOM 68 CA GLN S 178 48.979 9.797 -6.687 1.00107.13 ATOM 69 CA GLY S 179 49.590 9.620 -2.998 1.00136.70 ATOM 70 CA THR S 180 52.626 10.974 -1.267 1.00114.11 ATOM 71 CA GLY S 181 54.561 7.831 -1.939 1.00 93.90 ATOM 72 CA GLN S 182 53.976 8.153 -5.636 1.00121.06 ATOM 73 CA LEU S 183 54.222 11.913 -5.165 1.00281.75 ATOM 74 CA LEU S 184 52.838 12.391 -8.615 1.00175.46 ATOM 75 CA PHE S 185 49.743 13.665 -10.281 1.00 79.01 ATOM 76 CA SER S 186 48.984 13.174 -13.907 1.00 81.16 ATOM 77 CA VAL S 187 47.157 15.369 -16.338 1.00 44.46 ATOM 78 CA VAL S 188 45.850 13.522 -19.349 1.00 35.13 ATOM 79 CA ILE S 189 44.787 15.640 -22.277 1.00 57.32 ATOM 80 CA ASN S 190 43.263 14.225 -25.404 1.00115.07 ATOM 81 CA GLN S 191 42.310 15.492 -28.829 1.00 90.18 ATOM 82 CA LEU S 192 45.031 18.105 -28.787 1.00 75.27 ATOM 83 CA ARG S 193 44.280 21.039 -31.029 1.00 84.53 ATOM 84 CA LEU S 194 46.305 23.949 -32.298 1.00126.16 ATOM 85 CA SER S 195 44.841 26.075 -29.535 1.00 81.70 ATOM 86 CA ASP S 196 46.532 23.799 -27.011 1.00 72.04 ATOM 87 CA ALA S 197 50.048 24.984 -27.738 1.00 34.73 ATOM 88 CA GLY S 198 51.126 27.404 -25.060 1.00 21.42 ATOM 89 CA GLN S 199 52.632 27.675 -21.611 1.00 47.62 ATOM 90 CA TYR S 200 51.060 26.011 -18.617 1.00 81.45 ATOM 91 CA LEU S 201 52.033 25.225 -15.074 1.00111.22 ATOM 92 CA CYS S 202 51.321 22.360 -12.742 1.00 62.88 ATOM 93 CA GLN S 203 51.380 23.145 -9.094 1.00135.67 ATOM 94 CA ALA S 204 50.048 22.664 -5.616 1.00 54.03 ATOM 95 CA GLY S 205 47.981 24.958 -3.463 1.00 27.97 ATOM 96 CA ASP S 206 46.757 28.225 -4.879 1.00 44.58 ATOM 97 CA ASP S 207 47.916 29.431 -8.260 1.00 52.10 ATOM 98 CA SER S 208 49.277 32.685 -6.905 1.00100.33 ATOM 99 CA ASN S 209 51.787 30.804 -4.884 1.00173.31 ATOM 100 CA SER S 210 54.907 29.981 -6.813 1.00142.96 ATOM 101 CA ASN S 211 54.767 26.335 -5.942 1.00 73.05 ATOM 102 CA LYS S 212 54.603 25.026 -9.470 1.00177.09 ATOM 103 CA LYS S 213 56.619 24.235 -12.527 1.00140.18 ATOM 104 CA ASN S 214 56.254 25.755 -15.942 1.00 93.14 ATOM 105 CA ALA S 215 55.588 23.435 -18.822 1.00 32.06 ATOM 106 CA ASP S 216 55.593 24.419 -22.456 1.00 67.81 ATOM 107 CA LEU S 217 53.252 22.450 -24.626 1.00 49.10 ATOM 108 CA GLN S 218 53.911 22.448 -28.309 1.00111.74 ATOM 109 CA VAL S 219 51.218 21.046 -30.527 1.00 98.36 ATOM 110 CA LEU S 220 49.365 19.728 -33.476 1.00 0.00 ATOM 111 CA LYS S 221 46.433 21.918 -34.663 1.00141.90 ATOM 112 CA PRO S 222 48.286 25.188 -34.728 1.00 82.80 TER