HEADER SIGNAL PROTEIN 13-JUL-94 2IRT TITLE INITIAL CRYSTALLOGRAPHIC ANALYSES OF A RECOMBINANT INTERLEUKIN-1 TITLE 2 RECEPTOR ANTAGONIST PROTEIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: INTERLEUKIN-1 RECEPTOR ANTAGONIST; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 3.20 ANGSTORMS DBREF 2IRT B 1 152 UNP P18510 IL1RA_HUMAN 26 177 SEQRES 1 B 145 SER LYS MET GLN ALA PHE ARG ILE TRP ASP VAL ASN GLN SEQRES 2 B 145 LYS THR PHE TYR LEU ARG ASN ASN GLN LEU VAL ALA GLY SEQRES 3 B 145 TYR LEU GLN GLY PRO ASN VAL ASN LEU GLU GLU LYS ILE SEQRES 4 B 145 ASP VAL VAL PRO ILE GLU PRO HIS ALA LEU PHE LEU GLY SEQRES 5 B 145 ILE HIS GLY GLY LYS MET CYS LEU SER CYS VAL LYS SER SEQRES 6 B 145 GLY ASP GLU THR ARG LEU GLN LEU GLU ALA VAL ASN ILE SEQRES 7 B 145 THR ASP LEU SER GLU ASN ARG LYS GLN ASP LYS ARG PHE SEQRES 8 B 145 ALA PHE ILE ARG SER ASP SER GLY PRO THR THR SER PHE SEQRES 9 B 145 GLU SER ALA ALA CYS PRO GLY TRP PHE LEU CYS THR ALA SEQRES 10 B 145 MET GLU ALA ASP GLN PRO VAL SER LEU THR ASN MET PRO SEQRES 11 B 145 ASP GLU GLY VAL MET VAL THR LYS PHE TYR PHE GLN GLU SEQRES 12 B 145 ASP GLU ATOM 1 CA SER B 8 8.131 59.817 69.305 1.00 0.00 ATOM 2 CA LYS B 9 7.429 57.067 66.758 1.00 0.00 ATOM 3 CA MET B 10 6.967 53.899 68.954 1.00 0.00 ATOM 4 CA GLN B 11 5.192 50.688 67.778 1.00 0.00 ATOM 5 CA ALA B 12 4.499 47.748 70.194 1.00 0.00 ATOM 6 CA PHE B 13 6.133 44.379 69.499 1.00 0.00 ATOM 7 CA ARG B 14 6.730 41.009 71.266 1.00 0.00 ATOM 8 CA ILE B 15 10.369 39.680 71.128 1.00 0.00 ATOM 9 CA TRP B 16 10.639 35.846 71.301 1.00 0.00 ATOM 10 CA ASP B 17 14.086 34.085 70.731 1.00 0.00 ATOM 11 CA VAL B 18 15.155 30.992 68.742 1.00 0.00 ATOM 12 CA ASN B 19 14.684 28.335 71.500 1.00 0.00 ATOM 13 CA GLN B 20 11.359 30.047 71.955 1.00 0.00 ATOM 14 CA LYS B 21 12.278 31.598 75.358 1.00 0.00 ATOM 15 CA THR B 22 9.644 34.277 76.208 1.00 0.00 ATOM 16 CA PHE B 23 11.157 37.321 78.109 1.00 0.00 ATOM 17 CA TYR B 24 9.951 38.144 81.688 1.00 0.00 ATOM 18 CA LEU B 25 11.131 40.312 84.652 1.00 0.00 ATOM 19 CA ARG B 26 12.640 39.063 87.940 1.00 0.00 ATOM 20 CA ASN B 27 13.282 42.314 89.804 1.00 0.00 ATOM 21 CA ASN B 28 14.263 44.938 87.260 1.00 0.00 ATOM 22 CA GLN B 29 16.476 42.243 85.611 1.00 0.00 ATOM 23 CA LEU B 30 15.322 40.586 82.372 1.00 0.00 ATOM 24 CA VAL B 31 15.623 36.758 82.143 1.00 0.00 ATOM 25 CA ALA B 32 14.595 34.419 79.175 1.00 0.00 ATOM 26 CA GLY B 33 12.757 31.068 79.774 1.00 0.00 ATOM 27 CA TYR B 34 10.409 28.112 80.328 1.00 0.00 ATOM 28 CA LEU B 35 6.904 29.554 80.103 1.00 0.00 ATOM 29 CA GLN B 36 4.018 27.184 80.857 1.00 0.00 ATOM 30 CA GLY B 37 0.619 28.245 82.327 1.00 0.00 ATOM 31 CA PRO B 38 -0.492 31.239 84.470 1.00 0.00 ATOM 32 CA ASN B 39 3.023 32.656 84.964 1.00 0.00 ATOM 33 CA VAL B 40 2.632 32.746 81.218 1.00 0.00 ATOM 34 CA ASN B 41 1.194 36.217 82.179 1.00 0.00 ATOM 35 CA LEU B 42 4.396 38.064 82.865 1.00 0.00 ATOM 36 CA GLU B 43 4.976 38.062 79.099 1.00 0.00 ATOM 37 CA GLU B 44 7.547 40.774 78.502 1.00 0.00 ATOM 38 CA LYS B 45 7.280 43.512 76.026 1.00 0.00 ATOM 39 CA ILE B 46 9.877 45.411 74.078 1.00 0.00 ATOM 40 CA ASP B 47 8.970 48.585 72.269 1.00 0.00 ATOM 41 CA VAL B 48 11.287 49.712 69.565 1.00 0.00 ATOM 42 CA VAL B 49 11.135 53.092 67.975 1.00 0.00 ATOM 43 CA PRO B 50 12.435 53.292 64.392 1.00 0.00 ATOM 44 CA ILE B 51 14.839 56.055 65.286 1.00 0.00 ATOM 45 CA GLU B 52 16.345 58.560 62.848 1.00 0.00 ATOM 46 CA PRO B 53 19.086 56.940 60.713 1.00 0.00 ATOM 47 CA HIS B 54 18.977 53.168 60.058 1.00 0.00 ATOM 48 CA ALA B 55 18.472 52.805 63.825 1.00 0.00 ATOM 49 CA LEU B 56 15.907 51.852 66.432 1.00 0.00 ATOM 50 CA PHE B 57 15.670 52.397 70.227 1.00 0.00 ATOM 51 CA LEU B 58 14.333 49.651 72.590 1.00 0.00 ATOM 52 CA GLY B 59 12.697 50.314 75.991 1.00 0.00 ATOM 53 CA ILE B 60 10.058 48.361 77.899 1.00 0.00 ATOM 54 CA HIS B 61 6.613 49.186 76.274 1.00 0.00 ATOM 55 CA GLY B 62 4.968 51.686 78.687 1.00 0.00 ATOM 56 CA GLY B 63 8.073 51.750 80.924 1.00 0.00 ATOM 57 CA LYS B 64 10.647 54.405 81.956 1.00 0.00 ATOM 58 CA MET B 65 13.334 51.680 81.797 1.00 0.00 ATOM 59 CA CYS B 66 15.521 50.912 78.737 1.00 0.00 ATOM 60 CA LEU B 67 18.074 48.643 77.129 1.00 0.00 ATOM 61 CA SER B 68 21.360 50.547 77.176 1.00 0.00 ATOM 62 CA CYS B 69 25.030 49.478 76.989 1.00 0.00 ATOM 63 CA VAL B 70 27.641 50.856 79.438 1.00 0.00 ATOM 64 CA LYS B 71 31.144 49.601 80.544 1.00 0.00 ATOM 65 CA SER B 72 31.857 47.930 83.909 1.00 0.00 ATOM 66 CA GLY B 73 35.381 46.576 84.455 1.00 0.00 ATOM 67 CA ASP B 74 36.114 46.786 80.758 1.00 0.00 ATOM 68 CA GLU B 75 33.462 44.222 79.713 1.00 0.00 ATOM 69 CA THR B 76 30.296 45.774 78.188 1.00 0.00 ATOM 70 CA ARG B 77 27.649 44.128 80.419 1.00 0.00 ATOM 71 CA LEU B 78 23.919 44.876 79.751 1.00 0.00 ATOM 72 CA GLN B 79 21.995 46.767 82.339 1.00 0.00 ATOM 73 CA LEU B 80 18.662 48.558 82.255 1.00 0.00 ATOM 74 CA GLU B 81 18.046 52.117 83.493 1.00 0.00 ATOM 75 CA ALA B 82 15.353 54.792 83.401 1.00 0.00 ATOM 76 CA VAL B 83 14.649 57.282 80.689 1.00 0.00 ATOM 77 CA ASN B 84 11.293 57.676 78.796 1.00 0.00 ATOM 78 CA ILE B 85 11.659 56.735 75.059 1.00 0.00 ATOM 79 CA THR B 86 9.424 59.696 73.994 1.00 0.00 ATOM 80 CA ASP B 87 12.849 61.281 74.573 1.00 0.00 ATOM 81 CA LEU B 88 15.002 60.673 71.532 1.00 0.00 ATOM 82 CA SER B 89 18.623 61.866 71.379 1.00 0.00 ATOM 83 CA GLU B 90 19.396 60.610 67.923 1.00 0.00 ATOM 84 CA ASN B 91 21.474 63.609 69.358 1.00 0.00 ATOM 85 CA ARG B 92 21.608 64.327 73.080 1.00 0.00 ATOM 86 CA LYS B 93 19.275 61.801 74.739 1.00 0.00 ATOM 87 CA GLN B 94 22.353 60.629 76.629 1.00 0.00 ATOM 88 CA ASP B 95 21.824 58.922 73.281 1.00 0.00 ATOM 89 CA LYS B 96 23.885 56.151 71.649 1.00 0.00 ATOM 90 CA ARG B 97 23.790 53.635 74.475 1.00 0.00 ATOM 91 CA PHE B 98 20.145 52.718 73.578 1.00 0.00 ATOM 92 CA ALA B 99 20.791 52.302 69.866 1.00 0.00 ATOM 93 CA PHE B 100 20.384 48.735 68.519 1.00 0.00 ATOM 94 CA ILE B 101 20.203 47.851 64.786 1.00 0.00 ATOM 95 CA ARG B 102 17.291 45.629 63.601 1.00 0.00 ATOM 96 CA SER B 103 19.077 43.315 61.212 1.00 0.00 ATOM 97 CA ASP B 104 16.989 41.003 59.093 1.00 0.00 ATOM 98 CA SER B 105 19.218 38.052 58.243 1.00 0.00 ATOM 99 CA GLY B 106 16.717 35.548 56.606 1.00 0.00 ATOM 100 CA PRO B 107 13.915 35.343 59.239 1.00 0.00 ATOM 101 CA THR B 108 15.797 35.801 62.511 1.00 0.00 ATOM 102 CA THR B 109 16.754 39.342 63.511 1.00 0.00 ATOM 103 CA SER B 110 20.333 40.362 64.382 1.00 0.00 ATOM 104 CA PHE B 111 20.594 42.587 67.454 1.00 0.00 ATOM 105 CA GLU B 112 23.764 44.580 67.829 1.00 0.00 ATOM 106 CA SER B 113 24.388 47.748 69.853 1.00 0.00 ATOM 107 CA ALA B 114 26.310 50.595 68.188 1.00 0.00 ATOM 108 CA ALA B 115 27.927 52.307 71.215 1.00 0.00 ATOM 109 CA CYS B 116 30.123 49.229 71.512 1.00 0.00 ATOM 110 CA PRO B 117 29.880 47.621 68.052 1.00 0.00 ATOM 111 CA GLY B 118 30.517 43.888 67.779 1.00 0.00 ATOM 112 CA TRP B 119 28.343 43.447 70.916 1.00 0.00 ATOM 113 CA PHE B 120 24.868 41.933 70.339 1.00 0.00 ATOM 114 CA LEU B 121 21.768 41.037 72.368 1.00 0.00 ATOM 115 CA CYS B 122 22.648 37.517 73.379 1.00 0.00 ATOM 116 CA THR B 123 20.608 35.102 75.385 1.00 0.00 ATOM 117 CA ALA B 124 21.985 31.952 76.919 1.00 0.00 ATOM 118 CA MET B 125 20.351 28.638 75.919 1.00 0.00 ATOM 119 CA GLU B 126 20.148 27.749 79.560 1.00 0.00 ATOM 120 CA ALA B 127 16.778 28.865 80.975 1.00 0.00 ATOM 121 CA ASP B 128 16.566 31.556 83.610 1.00 0.00 ATOM 122 CA GLN B 129 20.044 32.878 82.633 1.00 0.00 ATOM 123 CA PRO B 130 20.233 36.708 82.200 1.00 0.00 ATOM 124 CA VAL B 131 20.205 38.518 78.856 1.00 0.00 ATOM 125 CA SER B 132 23.518 40.502 78.816 1.00 0.00 ATOM 126 CA LEU B 133 25.937 41.477 76.059 1.00 0.00 ATOM 127 CA THR B 134 28.180 39.118 74.114 1.00 0.00 ATOM 128 CA ASN B 135 30.922 39.106 71.570 1.00 0.00 ATOM 129 CA MET B 136 30.486 35.745 69.806 1.00 0.00 ATOM 130 CA PRO B 137 28.093 35.692 66.892 1.00 0.00 ATOM 131 CA ASP B 138 27.150 32.267 65.525 1.00 0.00 ATOM 132 CA GLU B 139 29.074 30.032 68.016 1.00 0.00 ATOM 133 CA GLY B 140 27.224 27.444 70.006 1.00 0.00 ATOM 134 CA VAL B 141 26.892 29.215 73.351 1.00 0.00 ATOM 135 CA MET B 142 24.370 32.025 73.305 1.00 0.00 ATOM 136 CA VAL B 143 21.516 33.247 71.137 1.00 0.00 ATOM 137 CA THR B 144 21.952 36.613 69.493 1.00 0.00 ATOM 138 CA LYS B 145 19.365 35.744 66.821 1.00 0.00 ATOM 139 CA PHE B 146 15.603 36.305 67.306 1.00 0.00 ATOM 140 CA TYR B 147 12.327 36.110 65.347 1.00 0.00 ATOM 141 CA PHE B 148 9.923 39.145 65.646 1.00 0.00 ATOM 142 CA GLN B 149 6.047 39.120 65.535 1.00 0.00 ATOM 143 CA GLU B 150 3.927 42.331 65.366 1.00 0.00 ATOM 144 CA ASP B 151 0.998 43.829 67.255 1.00 0.00 ATOM 145 CA GLU B 152 -1.684 46.471 67.086 1.00 0.00 TER