HEADER IMMUNE SYSTEM 21-MAR-08 3CM9 TITLE Solution Structure of Human SIgA2 COMPND MOL_ID: 3; COMPND 2 MOLECULE: Ig alpha-2 chain C region; COMPND 3 CHAIN: L, M, N, O; EXPDTA SOLUTION SCATTERING DBREF 3CM9 O 1 214 PDB 3CM9 3CM9 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 63.051 119.947-149.743 0.00 0.00 ATOM 2 CA THR O 109 60.556 117.069-149.474 0.00 0.00 ATOM 3 CA VAL O 110 58.817 115.742-146.348 0.00 0.00 ATOM 4 CA ALA O 111 60.669 113.319-144.063 0.00 0.00 ATOM 5 CA ALA O 112 59.318 110.959-141.392 0.00 0.00 ATOM 6 CA PRO O 113 61.212 111.221-138.052 0.00 0.00 ATOM 7 CA SER O 114 62.249 108.144-136.067 0.00 0.00 ATOM 8 CA VAL O 115 60.982 108.777-132.531 0.00 0.00 ATOM 9 CA PHE O 116 62.963 107.564-129.504 0.00 0.00 ATOM 10 CA ILE O 117 62.618 108.025-125.723 0.00 0.00 ATOM 11 CA PHE O 118 65.010 108.032-122.744 0.00 0.00 ATOM 12 CA PRO O 119 63.847 107.320-119.165 0.00 0.00 ATOM 13 CA PRO O 120 65.843 108.721-116.175 0.00 0.00 ATOM 14 CA SER O 121 69.112 107.001-115.261 0.00 0.00 ATOM 15 CA ASP O 122 69.968 105.140-112.046 0.00 0.00 ATOM 16 CA GLU O 123 72.352 107.761-110.630 0.00 0.00 ATOM 17 CA GLN O 124 70.062 110.673-111.557 0.00 0.00 ATOM 18 CA LEU O 125 67.289 109.677-109.130 0.00 0.00 ATOM 19 CA LYS O 126 69.647 109.865-106.112 0.00 0.00 ATOM 20 CA SER O 127 69.397 113.636-105.881 0.00 0.00 ATOM 21 CA GLY O 128 65.605 113.575-106.129 0.00 0.00 ATOM 22 CA THR O 129 64.691 114.409-109.729 0.00 0.00 ATOM 23 CA ALA O 130 63.820 112.747-113.061 0.00 0.00 ATOM 24 CA SER O 131 63.971 113.686-116.750 0.00 0.00 ATOM 25 CA VAL O 132 62.403 111.705-119.604 0.00 0.00 ATOM 26 CA VAL O 133 63.702 112.688-123.054 0.00 0.00 ATOM 27 CA CYS O 134 61.891 111.976-126.352 0.00 0.00 ATOM 28 CA LEU O 135 63.746 112.195-129.679 0.00 0.00 ATOM 29 CA LEU O 136 62.439 113.053-133.169 0.00 0.00 ATOM 30 CA ASN O 137 65.536 112.351-135.296 0.00 0.00 ATOM 31 CA ASN O 138 65.615 113.619-138.921 0.00 0.00 ATOM 32 CA PHE O 139 62.528 115.435-140.273 0.00 0.00 ATOM 33 CA TYR O 140 61.154 118.231-142.469 0.00 0.00 ATOM 34 CA PRO O 141 59.553 120.688-142.022 0.00 0.00 ATOM 35 CA ARG O 142 60.281 121.861-138.472 0.00 0.00 ATOM 36 CA GLU O 143 56.513 121.845-137.859 0.00 0.00 ATOM 37 CA ALA O 144 56.004 119.032-135.353 0.00 0.00 ATOM 38 CA LYS O 145 54.158 118.248-132.118 0.00 0.00 ATOM 39 CA VAL O 146 54.970 116.267-128.975 0.00 0.00 ATOM 40 CA GLN O 147 52.377 115.198-126.396 0.00 0.00 ATOM 41 CA TRP O 148 53.490 113.333-123.260 0.00 0.00 ATOM 42 CA LYS O 149 51.351 110.452-122.013 0.00 0.00 ATOM 43 CA VAL O 150 51.538 109.769-118.278 0.00 0.00 ATOM 44 CA ASP O 151 49.231 106.947-117.123 0.00 0.00 ATOM 45 CA ASN O 152 47.568 106.671-120.560 0.00 0.00 ATOM 46 CA ALA O 153 45.107 109.564-121.003 0.00 0.00 ATOM 47 CA LEU O 154 46.577 111.899-118.371 0.00 0.00 ATOM 48 CA GLN O 155 48.399 114.548-120.406 0.00 0.00 ATOM 49 CA SER O 156 50.837 116.799-118.539 0.00 0.00 ATOM 50 CA GLY O 157 52.030 120.318-119.326 0.00 0.00 ATOM 51 CA ASN O 158 55.503 120.980-117.923 0.00 0.00 ATOM 52 CA SER O 159 57.877 120.215-120.799 0.00 0.00 ATOM 53 CA GLN O 160 60.581 122.081-122.755 0.00 0.00 ATOM 54 CA GLU O 161 61.147 121.943-126.524 0.00 0.00 ATOM 55 CA SER O 162 64.436 122.741-128.283 0.00 0.00 ATOM 56 CA VAL O 163 65.218 122.578-132.005 0.00 0.00 ATOM 57 CA THR O 164 68.714 122.758-133.491 0.00 0.00 ATOM 58 CA GLU O 165 69.776 124.683-136.602 0.00 0.00 ATOM 59 CA GLN O 166 69.442 123.009-140.028 0.00 0.00 ATOM 60 CA ASP O 167 72.567 120.995-140.944 0.00 0.00 ATOM 61 CA SER O 168 74.736 121.273-144.071 0.00 0.00 ATOM 62 CA LYS O 169 73.939 117.845-145.570 0.00 0.00 ATOM 63 CA ASP O 170 70.384 116.601-146.136 0.00 0.00 ATOM 64 CA SER O 171 68.623 119.790-144.972 0.00 0.00 ATOM 65 CA THR O 172 66.433 118.558-142.091 0.00 0.00 ATOM 66 CA TYR O 173 65.394 119.300-138.494 0.00 0.00 ATOM 67 CA SER O 174 65.346 117.339-135.230 0.00 0.00 ATOM 68 CA LEU O 175 63.661 117.854-131.839 0.00 0.00 ATOM 69 CA SER O 176 63.656 116.636-128.229 0.00 0.00 ATOM 70 CA SER O 177 61.332 116.819-125.218 0.00 0.00 ATOM 71 CA THR O 178 62.347 116.496-121.563 0.00 0.00 ATOM 72 CA LEU O 179 59.689 115.870-118.908 0.00 0.00 ATOM 73 CA THR O 180 61.071 117.124-115.584 0.00 0.00 ATOM 74 CA LEU O 181 59.372 115.570-112.540 0.00 0.00 ATOM 75 CA SER O 182 60.884 114.894-109.106 0.00 0.00 ATOM 76 CA LYS O 183 61.505 111.408-107.676 0.00 0.00 ATOM 77 CA ALA O 184 58.306 111.486-105.590 0.00 0.00 ATOM 78 CA ASP O 185 56.056 111.958-108.624 0.00 0.00 ATOM 79 CA TYR O 186 58.093 109.489-110.706 0.00 0.00 ATOM 80 CA GLU O 187 57.911 106.554-108.272 0.00 0.00 ATOM 81 CA LYS O 188 54.121 106.844-108.546 0.00 0.00 ATOM 82 CA HIS O 189 53.475 106.203-112.256 0.00 0.00 ATOM 83 CA LYS O 190 54.231 103.412-114.734 0.00 0.00 ATOM 84 CA VAL O 191 53.327 104.189-118.364 0.00 0.00 ATOM 85 CA TYR O 192 55.260 106.953-120.162 0.00 0.00 ATOM 86 CA ALA O 193 54.551 107.457-123.878 0.00 0.00 ATOM 87 CA CYS O 194 55.263 110.331-126.298 0.00 0.00 ATOM 88 CA GLU O 195 52.808 110.887-129.181 0.00 0.00 ATOM 89 CA VAL O 196 54.224 112.662-132.263 0.00 0.00 ATOM 90 CA THR O 197 52.380 114.339-135.158 0.00 0.00 ATOM 91 CA HIS O 198 54.091 115.169-138.464 0.00 0.00 ATOM 92 CA GLN O 199 53.209 115.382-142.166 0.00 0.00 ATOM 93 CA GLY O 200 55.642 112.596-143.021 0.00 0.00 ATOM 94 CA LEU O 201 53.975 110.218-140.571 0.00 0.00 ATOM 95 CA SER O 202 50.832 108.453-141.802 0.00 0.00 ATOM 96 CA SER O 203 49.662 108.054-138.192 0.00 0.00 ATOM 97 CA PRO O 204 50.969 109.233-134.762 0.00 0.00 ATOM 98 CA VAL O 205 53.910 107.159-133.521 0.00 0.00 ATOM 99 CA THR O 206 53.779 106.145-129.853 0.00 0.00 ATOM 100 CA LYS O 207 56.924 105.309-127.863 0.00 0.00 ATOM 101 CA SER O 208 56.221 104.042-124.348 0.00 0.00 ATOM 102 CA PHE O 209 58.067 102.157-121.602 0.00 0.00 ATOM 103 CA ASN O 210 57.016 100.530-118.338 0.00 0.00 ATOM 104 CA ARG O 211 58.451 101.347-114.906 0.00 0.00 ATOM 105 CA GLY O 212 59.855 98.417-112.971 0.00 0.00 ATOM 106 CA GLU O 213 62.952 96.649-114.277 0.00 0.00 ATOM 107 CA CYS O 214 62.795 93.919-111.680 0.00 0.00 TER