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 GLU LEU VAL MET THR GLN SER PRO SER SER LEU SER ALA SEQRES 2 N 107 SER VAL GLY ASP ARG VAL ASN ILE ALA CYS ARG ALA SER SEQRES 3 N 107 GLN GLY ILE SER SER ALA LEU ALA TRP TYR GLN GLN LYS SEQRES 4 N 107 PRO GLY LYS ALA PRO ARG LEU LEU ILE TYR ASP ALA SER SEQRES 5 N 107 ASN LEU GLU SER GLY VAL PRO SER ARG PHE SER GLY SER SEQRES 6 N 107 GLY SER GLY THR ASP PHE THR LEU THR ILE SER SER LEU SEQRES 7 N 107 GLN PRO GLU ASP PHE ALA ILE TYR TYR CYS GLN GLN PHE SEQRES 8 N 107 ASN SER TYR PRO LEU THR PHE GLY GLY GLY THR LYS VAL SEQRES 9 N 107 GLU ILE LYS ATOM 1 CA GLU N 1 75.454 9.434-155.710 0.00 0.00 ATOM 2 CA LEU N 2 77.894 10.872-158.257 0.00 0.00 ATOM 3 CA VAL N 3 81.169 11.985-156.651 0.00 0.00 ATOM 4 CA MET N 4 82.719 15.340-157.589 0.00 0.00 ATOM 5 CA THR N 5 86.404 15.830-156.733 0.00 0.00 ATOM 6 CA GLN N 6 88.090 19.238-157.090 0.00 0.00 ATOM 7 CA SER N 7 91.807 20.074-156.864 0.00 0.00 ATOM 8 CA PRO N 8 93.892 21.526-155.383 0.00 0.00 ATOM 9 CA SER N 9 92.644 22.017-151.816 0.00 0.00 ATOM 10 CA SER N 10 94.214 25.482-151.572 0.00 0.00 ATOM 11 CA LEU N 11 95.624 28.043-154.028 0.00 0.00 ATOM 12 CA SER N 12 98.311 30.695-153.575 0.00 0.00 ATOM 13 CA ALA N 13 98.964 33.335-156.253 0.00 0.00 ATOM 14 CA SER N 14 99.736 37.047-156.629 0.00 0.00 ATOM 15 CA VAL N 15 97.570 39.578-158.490 0.00 0.00 ATOM 16 CA GLY N 16 97.764 38.879-162.218 0.00 0.00 ATOM 17 CA ASP N 17 98.522 35.146-162.352 0.00 0.00 ATOM 18 CA ARG N 18 96.174 32.794-164.213 0.00 0.00 ATOM 19 CA VAL N 19 94.840 30.093-161.862 0.00 0.00 ATOM 20 CA ASN N 20 93.363 26.749-162.956 0.00 0.00 ATOM 21 CA ILE N 21 90.650 24.949-160.949 0.00 0.00 ATOM 22 CA ALA N 22 89.649 21.387-161.909 0.00 0.00 ATOM 23 CA CYS N 23 86.355 19.541-161.304 0.00 0.00 ATOM 24 CA ARG N 24 86.275 15.849-162.265 0.00 0.00 ATOM 25 CA ALA N 25 83.304 13.474-161.969 0.00 0.00 ATOM 26 CA SER N 26 82.781 9.740-161.402 0.00 0.00 ATOM 27 CA GLN N 27 81.071 9.328-164.788 0.00 0.00 ATOM 28 CA GLY N 28 80.159 11.419-167.837 0.00 0.00 ATOM 29 CA ILE N 29 77.575 14.144-167.223 0.00 0.00 ATOM 30 CA SER N 30 77.879 15.894-170.607 0.00 0.00 ATOM 31 CA SER N 31 77.602 19.705-170.378 0.00 0.00 ATOM 32 CA ALA N 32 75.868 19.781-166.968 0.00 0.00 ATOM 33 CA LEU N 33 78.061 21.716-164.497 0.00 0.00 ATOM 34 CA ALA N 34 77.839 25.024-162.605 0.00 0.00 ATOM 35 CA TRP N 35 80.531 27.096-160.866 0.00 0.00 ATOM 36 CA TYR N 36 79.979 29.208-157.747 0.00 0.00 ATOM 37 CA GLN N 37 81.587 31.982-155.692 0.00 0.00 ATOM 38 CA GLN N 38 81.145 32.000-151.920 0.00 0.00 ATOM 39 CA LYS N 39 82.631 34.999-150.119 0.00 0.00 ATOM 40 CA PRO N 40 83.241 33.896-146.488 0.00 0.00 ATOM 41 CA GLY N 41 80.100 34.656-144.501 0.00 0.00 ATOM 42 CA LYS N 42 77.841 34.995-147.550 0.00 0.00 ATOM 43 CA ALA N 43 75.578 32.988-149.853 0.00 0.00 ATOM 44 CA PRO N 44 77.021 31.410-153.049 0.00 0.00 ATOM 45 CA ARG N 45 76.925 33.294-156.355 0.00 0.00 ATOM 46 CA LEU N 46 76.403 31.717-159.777 0.00 0.00 ATOM 47 CA LEU N 47 79.305 32.339-162.155 0.00 0.00 ATOM 48 CA ILE N 48 79.033 29.858-165.032 0.00 0.00 ATOM 49 CA TYR N 49 76.232 27.579-166.245 0.00 0.00 ATOM 50 CA ASP N 50 75.971 24.921-168.985 0.00 0.00 ATOM 51 CA ALA N 51 79.779 24.546-168.812 0.00 0.00 ATOM 52 CA SER N 52 80.954 27.727-170.578 0.00 0.00 ATOM 53 CA ASN N 53 78.143 30.323-170.586 0.00 0.00 ATOM 54 CA LEU N 54 78.608 33.322-168.275 0.00 0.00 ATOM 55 CA GLU N 55 75.873 35.056-166.263 0.00 0.00 ATOM 56 CA SER N 56 74.907 38.706-166.836 0.00 0.00 ATOM 57 CA GLY N 57 77.064 40.805-164.529 0.00 0.00 ATOM 58 CA VAL N 58 79.912 38.356-163.951 0.00 0.00 ATOM 59 CA PRO N 59 83.266 39.833-165.118 0.00 0.00 ATOM 60 CA SER N 60 84.652 39.018-168.568 0.00 0.00 ATOM 61 CA ARG N 61 87.772 37.465-167.008 0.00 0.00 ATOM 62 CA PHE N 62 85.913 34.385-165.722 0.00 0.00 ATOM 63 CA SER N 63 85.424 31.387-168.051 0.00 0.00 ATOM 64 CA GLY N 64 86.068 27.672-168.605 0.00 0.00 ATOM 65 CA SER N 65 85.305 24.545-170.646 0.00 0.00 ATOM 66 CA GLY N 66 85.299 20.735-170.616 0.00 0.00 ATOM 67 CA SER N 67 83.101 17.943-172.003 0.00 0.00 ATOM 68 CA GLY N 68 82.139 14.844-170.032 0.00 0.00 ATOM 69 CA THR N 69 84.622 14.081-167.259 0.00 0.00 ATOM 70 CA ASP N 70 87.384 16.714-167.074 0.00 0.00 ATOM 71 CA PHE N 71 86.343 20.315-166.296 0.00 0.00 ATOM 72 CA THR N 72 88.248 23.549-165.583 0.00 0.00 ATOM 73 CA LEU N 73 87.672 27.065-164.183 0.00 0.00 ATOM 74 CA THR N 74 90.005 29.824-165.397 0.00 0.00 ATOM 75 CA ILE N 75 90.776 33.436-164.370 0.00 0.00 ATOM 76 CA SER N 76 93.030 35.436-166.731 0.00 0.00 ATOM 77 CA SER N 77 93.683 38.312-164.292 0.00 0.00 ATOM 78 CA LEU N 78 93.504 37.590-160.561 0.00 0.00 ATOM 79 CA GLN N 79 92.271 40.548-158.500 0.00 0.00 ATOM 80 CA PRO N 80 92.013 41.023-154.703 0.00 0.00 ATOM 81 CA GLU N 81 88.208 40.912-154.898 0.00 0.00 ATOM 82 CA ASP N 82 88.300 37.226-155.923 0.00 0.00 ATOM 83 CA PHE N 83 88.782 35.872-152.376 0.00 0.00 ATOM 84 CA ALA N 84 86.166 33.101-152.186 0.00 0.00 ATOM 85 CA ILE N 85 85.732 29.329-151.949 0.00 0.00 ATOM 86 CA TYR N 86 84.582 28.069-155.359 0.00 0.00 ATOM 87 CA TYR N 87 82.339 25.034-155.926 0.00 0.00 ATOM 88 CA CYS N 88 81.080 22.933-158.854 0.00 0.00 ATOM 89 CA GLN N 89 77.884 20.870-158.826 0.00 0.00 ATOM 90 CA GLN N 90 76.226 18.657-161.447 0.00 0.00 ATOM 91 CA PHE N 91 72.657 18.477-162.756 0.00 0.00 ATOM 92 CA ASN N 92 72.175 15.335-164.863 0.00 0.00 ATOM 93 CA SER N 93 70.720 12.986-162.227 0.00 0.00 ATOM 94 CA TYR N 94 69.687 12.852-158.558 0.00 0.00 ATOM 95 CA PRO N 95 70.714 13.777-156.007 0.00 0.00 ATOM 96 CA LEU N 96 72.590 16.929-157.027 0.00 0.00 ATOM 97 CA THR N 97 76.095 16.965-155.525 0.00 0.00 ATOM 98 CA PHE N 98 78.710 19.675-154.870 0.00 0.00 ATOM 99 CA GLY N 99 82.497 19.849-155.086 0.00 0.00 ATOM 100 CA GLY N 100 84.972 19.838-152.212 0.00 0.00 ATOM 101 CA GLY N 101 85.732 23.541-152.532 0.00 0.00 ATOM 102 CA THR N 102 88.906 25.282-153.688 0.00 0.00 ATOM 103 CA LYS N 103 89.878 28.288-151.555 0.00 0.00 ATOM 104 CA VAL N 104 91.791 31.115-153.254 0.00 0.00 ATOM 105 CA GLU N 105 94.295 32.988-151.079 0.00 0.00 ATOM 106 CA ILE N 106 95.789 36.205-152.502 0.00 0.00 ATOM 107 CA LYS N 107 99.510 37.061-152.428 0.00 0.00 TER