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 N 1 214 PDB 3CM9 3CM9 1 214 SEQRES 1 N 107 ARG THR VAL ALA ALA PRO SER VAL PHE ILE PHE PRO PRO SEQRES 2 N 107 SER ASP GLU GLN LEU LYS SER GLY THR ALA SER VAL VAL SEQRES 3 N 107 CYS LEU LEU ASN ASN PHE TYR PRO ARG GLU ALA LYS VAL SEQRES 4 N 107 GLN TRP LYS VAL ASP ASN ALA LEU GLN SER GLY ASN SER SEQRES 5 N 107 GLN GLU SER VAL THR GLU GLN ASP SER LYS ASP SER THR SEQRES 6 N 107 TYR SER LEU SER SER THR LEU THR LEU SER LYS ALA ASP SEQRES 7 N 107 TYR GLU LYS HIS LYS VAL TYR ALA CYS GLU VAL THR HIS SEQRES 8 N 107 GLN GLY LEU SER SER PRO VAL THR LYS SER PHE ASN ARG SEQRES 9 N 107 GLY GLU CYS ATOM 1 CA ARG N 108 101.199 40.422-151.785 0.00 0.00 ATOM 2 CA THR N 109 104.076 42.082-149.901 0.00 0.00 ATOM 3 CA VAL N 110 104.728 42.103-146.141 0.00 0.00 ATOM 4 CA ALA N 111 102.877 44.597-143.935 0.00 0.00 ATOM 5 CA ALA N 112 103.652 45.782-140.398 0.00 0.00 ATOM 6 CA PRO N 113 100.599 45.657-138.057 0.00 0.00 ATOM 7 CA SER N 114 99.752 48.512-135.687 0.00 0.00 ATOM 8 CA VAL N 115 99.288 46.826-132.301 0.00 0.00 ATOM 9 CA PHE N 116 96.717 48.196-129.832 0.00 0.00 ATOM 10 CA ILE N 117 95.397 47.108-126.414 0.00 0.00 ATOM 11 CA PHE N 118 92.102 47.424-124.505 0.00 0.00 ATOM 12 CA PRO N 119 91.806 47.095-120.694 0.00 0.00 ATOM 13 CA PRO N 120 88.559 45.857-119.033 0.00 0.00 ATOM 14 CA SER N 121 85.789 48.449-118.725 0.00 0.00 ATOM 15 CA ASP N 122 84.329 49.860-115.502 0.00 0.00 ATOM 16 CA GLU N 123 80.941 48.131-115.786 0.00 0.00 ATOM 17 CA GLN N 124 82.507 44.795-116.786 0.00 0.00 ATOM 18 CA LEU N 125 84.251 44.257-113.434 0.00 0.00 ATOM 19 CA LYS N 126 80.940 44.428-111.508 0.00 0.00 ATOM 20 CA SER N 127 80.019 40.853-112.349 0.00 0.00 ATOM 21 CA GLY N 128 83.454 39.556-111.372 0.00 0.00 ATOM 22 CA THR N 129 85.455 39.096-114.577 0.00 0.00 ATOM 23 CA ALA N 130 87.984 40.887-116.818 0.00 0.00 ATOM 24 CA SER N 131 89.055 40.727-120.469 0.00 0.00 ATOM 25 CA VAL N 132 92.119 42.441-121.952 0.00 0.00 ATOM 26 CA VAL N 133 92.070 42.640-125.762 0.00 0.00 ATOM 27 CA CYS N 134 95.163 43.180-127.950 0.00 0.00 ATOM 28 CA LEU N 135 94.799 44.247-131.595 0.00 0.00 ATOM 29 CA LEU N 136 97.082 43.586-134.591 0.00 0.00 ATOM 30 CA ASN N 137 95.416 45.747-137.265 0.00 0.00 ATOM 31 CA ASN N 138 96.427 45.256-140.937 0.00 0.00 ATOM 32 CA PHE N 139 99.158 42.692-141.735 0.00 0.00 ATOM 33 CA TYR N 140 100.452 40.017-144.119 0.00 0.00 ATOM 34 CA PRO N 141 100.995 37.104-143.955 0.00 0.00 ATOM 35 CA ARG N 142 98.625 35.680-141.334 0.00 0.00 ATOM 36 CA GLU N 143 101.682 34.196-139.596 0.00 0.00 ATOM 37 CA ALA N 144 101.915 36.138-136.335 0.00 0.00 ATOM 38 CA LYS N 145 102.468 35.606-132.608 0.00 0.00 ATOM 39 CA VAL N 146 101.063 37.165-129.436 0.00 0.00 ATOM 40 CA GLN N 147 102.607 36.731-125.980 0.00 0.00 ATOM 41 CA TRP N 148 100.910 38.297-122.942 0.00 0.00 ATOM 42 CA LYS N 149 103.090 39.914-120.286 0.00 0.00 ATOM 43 CA VAL N 150 101.634 39.953-116.776 0.00 0.00 ATOM 44 CA ASP N 151 103.991 41.471-114.175 0.00 0.00 ATOM 45 CA ASN N 152 106.882 41.713-116.671 0.00 0.00 ATOM 46 CA ALA N 153 108.403 38.239-117.160 0.00 0.00 ATOM 47 CA LEU N 154 105.421 36.194-115.943 0.00 0.00 ATOM 48 CA GLN N 155 103.896 34.807-119.140 0.00 0.00 ATOM 49 CA SER N 156 100.396 33.327-118.896 0.00 0.00 ATOM 50 CA GLY N 157 98.684 30.694-121.032 0.00 0.00 ATOM 51 CA ASN N 158 94.906 31.126-121.052 0.00 0.00 ATOM 52 CA SER N 159 94.180 33.206-124.160 0.00 0.00 ATOM 53 CA GLN N 160 92.071 32.844-127.326 0.00 0.00 ATOM 54 CA GLU N 161 93.107 33.837-130.861 0.00 0.00 ATOM 55 CA SER N 162 90.705 34.631-133.713 0.00 0.00 ATOM 56 CA VAL N 163 91.542 35.720-137.264 0.00 0.00 ATOM 57 CA THR N 164 89.021 37.107-139.753 0.00 0.00 ATOM 58 CA GLU N 165 88.790 36.286-143.465 0.00 0.00 ATOM 59 CA GLN N 166 90.906 38.290-145.947 0.00 0.00 ATOM 60 CA ASP N 167 89.095 41.442-147.147 0.00 0.00 ATOM 61 CA SER N 168 88.360 42.536-150.728 0.00 0.00 ATOM 62 CA LYS N 169 90.602 45.633-150.802 0.00 0.00 ATOM 63 CA ASP N 170 94.286 45.555-149.827 0.00 0.00 ATOM 64 CA SER N 171 94.476 41.791-149.183 0.00 0.00 ATOM 65 CA THR N 172 95.593 41.601-145.532 0.00 0.00 ATOM 66 CA TYR N 173 94.871 39.911-142.187 0.00 0.00 ATOM 67 CA SER N 174 94.165 41.113-138.643 0.00 0.00 ATOM 68 CA LEU N 175 94.153 39.428-135.212 0.00 0.00 ATOM 69 CA SER N 176 93.065 39.906-131.594 0.00 0.00 ATOM 70 CA SER N 177 93.854 38.353-128.207 0.00 0.00 ATOM 71 CA THR N 178 91.607 38.385-125.133 0.00 0.00 ATOM 72 CA LEU N 179 93.053 37.510-121.722 0.00 0.00 ATOM 73 CA THR N 180 90.178 36.294-119.534 0.00 0.00 ATOM 74 CA LEU N 181 90.888 36.556-115.792 0.00 0.00 ATOM 75 CA SER N 182 88.390 37.129-112.970 0.00 0.00 ATOM 76 CA LYS N 183 88.253 40.287-110.828 0.00 0.00 ATOM 77 CA ALA N 184 90.196 38.655-107.976 0.00 0.00 ATOM 78 CA ASP N 185 93.237 37.917-110.147 0.00 0.00 ATOM 79 CA TYR N 186 92.963 41.288-111.919 0.00 0.00 ATOM 80 CA GLU N 187 92.999 43.474-108.789 0.00 0.00 ATOM 81 CA LYS N 188 96.346 41.864-107.926 0.00 0.00 ATOM 82 CA HIS N 189 98.608 42.815-110.853 0.00 0.00 ATOM 83 CA LYS N 190 99.707 46.029-112.574 0.00 0.00 ATOM 84 CA VAL N 191 101.759 45.672-115.774 0.00 0.00 ATOM 85 CA TYR N 192 99.923 44.248-118.806 0.00 0.00 ATOM 86 CA ALA N 193 101.870 44.161-122.084 0.00 0.00 ATOM 87 CA CYS N 194 101.397 42.220-125.342 0.00 0.00 ATOM 88 CA GLU N 195 104.534 41.311-127.337 0.00 0.00 ATOM 89 CA VAL N 196 104.023 40.754-131.089 0.00 0.00 ATOM 90 CA THR N 197 106.317 39.047-133.621 0.00 0.00 ATOM 91 CA HIS N 198 105.899 39.501-137.385 0.00 0.00 ATOM 92 CA GLN N 199 108.078 39.628-140.510 0.00 0.00 ATOM 93 CA GLY N 200 107.063 43.218-141.206 0.00 0.00 ATOM 94 CA LEU N 201 108.213 44.345-137.765 0.00 0.00 ATOM 95 CA SER N 202 111.941 45.011-137.364 0.00 0.00 ATOM 96 CA SER N 203 111.649 44.308-133.625 0.00 0.00 ATOM 97 CA PRO N 204 108.819 43.112-131.297 0.00 0.00 ATOM 98 CA VAL N 205 106.332 45.881-130.495 0.00 0.00 ATOM 99 CA THR N 206 105.287 46.112-126.840 0.00 0.00 ATOM 100 CA LYS N 207 101.958 47.688-125.840 0.00 0.00 ATOM 101 CA SER N 208 101.561 47.942-122.064 0.00 0.00 ATOM 102 CA PHE N 209 99.321 49.814-119.613 0.00 0.00 ATOM 103 CA ASN N 210 99.446 50.320-115.839 0.00 0.00 ATOM 104 CA ARG N 211 96.542 49.129-113.672 0.00 0.00 ATOM 105 CA GLY N 212 95.414 51.580-110.972 0.00 0.00 ATOM 106 CA GLU N 213 94.222 55.148-111.657 0.00 0.00 ATOM 107 CA CYS N 214 92.870 57.672-109.121 0.00 0.00 TER