HEADER CYTOKINE 09-MAR-94 1ILT TITLE X-RAY STRUCTURE OF INTERLEUKIN-1 RECEPTOR ANTAGONIST AT 2.0 ANGSTROMS TITLE 2 RESOLUTION 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. 2.00 ANGSTORMS DBREF 1ILT B 1 152 UNP P18510 IL1RA_HUMAN 26 177 SEQRES 1 B 143 MET GLN ALA PHE ARG ILE TRP ASP VAL ASN GLN LYS THR SEQRES 2 B 143 PHE TYR LEU ARG ASN ASN GLN LEU VAL ALA GLY TYR LEU SEQRES 3 B 143 GLN GLY PRO ASN VAL ASN LEU GLU GLU LYS ILE ASP VAL SEQRES 4 B 143 VAL PRO ILE GLU PRO HIS ALA LEU PHE LEU GLY ILE HIS SEQRES 5 B 143 GLY GLY LYS MET CYS LEU SER CYS VAL LYS SER GLY ASP SEQRES 6 B 143 GLU THR ARG LEU GLN LEU GLU ALA VAL ASN ILE THR ASP SEQRES 7 B 143 LEU SER GLU ASN ARG LYS GLN ASP LYS ARG PHE ALA PHE SEQRES 8 B 143 ILE ARG SER ASP SER GLY PRO THR THR SER PHE GLU SER SEQRES 9 B 143 ALA ALA CYS PRO GLY TRP PHE LEU CYS THR ALA MET GLU SEQRES 10 B 143 ALA ASP GLN PRO VAL SER LEU THR ASN MET PRO ASP GLU SEQRES 11 B 143 GLY VAL MET VAL THR LYS PHE TYR PHE GLN GLU ASP GLU ATOM 1 CA MET B 10 17.324 64.861 100.471 1.00 30.26 ATOM 2 CA GLN B 11 20.864 65.866 101.558 1.00 30.61 ATOM 3 CA ALA B 12 24.178 66.190 99.739 1.00 27.58 ATOM 4 CA PHE B 13 27.366 64.466 100.863 1.00 23.43 ATOM 5 CA ARG B 14 30.975 64.382 99.697 1.00 22.79 ATOM 6 CA ILE B 15 32.782 61.045 99.383 1.00 19.55 ATOM 7 CA TRP B 16 36.507 60.148 99.115 1.00 22.02 ATOM 8 CA ASP B 17 37.809 56.690 99.842 1.00 16.26 ATOM 9 CA VAL B 18 40.311 55.870 102.555 1.00 16.87 ATOM 10 CA ASN B 19 43.070 56.657 99.962 1.00 16.12 ATOM 11 CA GLN B 20 41.587 60.043 98.965 1.00 16.29 ATOM 12 CA LYS B 21 40.014 59.016 95.594 1.00 14.43 ATOM 13 CA THR B 22 36.699 60.615 94.691 1.00 16.37 ATOM 14 CA PHE B 23 33.943 59.490 92.346 1.00 15.36 ATOM 15 CA TYR B 24 33.286 61.021 88.932 1.00 20.00 ATOM 16 CA LEU B 25 31.557 59.705 85.778 1.00 25.61 ATOM 17 CA ARG B 26 33.662 58.210 83.021 1.00 34.12 ATOM 18 CA ASN B 27 31.920 56.942 79.901 1.00 39.68 ATOM 19 CA ASN B 28 28.728 56.243 81.847 1.00 38.75 ATOM 20 CA GLN B 29 30.256 54.384 84.771 1.00 32.24 ATOM 21 CA LEU B 30 31.164 55.916 88.154 1.00 22.82 ATOM 22 CA VAL B 31 34.890 55.465 88.723 1.00 15.77 ATOM 23 CA ALA B 32 37.228 56.550 91.503 1.00 15.94 ATOM 24 CA GLY B 33 40.387 58.560 90.974 1.00 16.94 ATOM 25 CA TYR B 34 42.207 61.834 91.571 1.00 17.87 ATOM 26 CA LEU B 35 40.907 65.078 90.137 1.00 21.46 ATOM 27 CA GLN B 36 42.874 68.285 90.256 1.00 26.24 ATOM 28 CA GLY B 37 42.468 71.701 88.765 1.00 24.78 ATOM 29 CA PRO B 38 39.663 72.242 86.235 1.00 28.66 ATOM 30 CA ASN B 39 38.638 68.604 86.473 1.00 29.63 ATOM 31 CA VAL B 40 37.758 68.807 90.123 1.00 28.03 ATOM 32 CA ASN B 41 34.552 70.065 88.420 1.00 30.22 ATOM 33 CA LEU B 42 33.702 66.459 87.622 1.00 20.86 ATOM 34 CA GLU B 43 33.415 65.432 91.269 1.00 18.85 ATOM 35 CA GLU B 44 30.143 63.675 91.898 1.00 18.06 ATOM 36 CA LYS B 45 28.332 64.703 95.025 1.00 21.34 ATOM 37 CA ILE B 46 26.209 61.989 96.666 1.00 21.29 ATOM 38 CA ASP B 47 22.516 62.734 97.178 1.00 20.29 ATOM 39 CA VAL B 48 20.967 60.730 99.978 1.00 21.39 ATOM 40 CA VAL B 49 17.517 60.002 101.325 1.00 23.20 ATOM 41 CA PRO B 50 17.764 58.343 104.762 1.00 22.71 ATOM 42 CA ILE B 51 15.709 55.322 105.720 1.00 24.16 ATOM 43 CA GLU B 52 15.112 53.659 109.070 1.00 32.59 ATOM 44 CA PRO B 53 16.622 52.093 110.938 1.00 33.12 ATOM 45 CA HIS B 54 20.039 52.761 109.367 1.00 29.84 ATOM 46 CA ALA B 55 19.815 52.748 105.562 1.00 23.98 ATOM 47 CA LEU B 56 19.640 55.217 102.696 1.00 22.38 ATOM 48 CA PHE B 57 19.204 55.591 98.959 1.00 20.82 ATOM 49 CA LEU B 58 22.238 56.948 97.060 1.00 19.71 ATOM 50 CA GLY B 59 21.918 58.974 93.894 1.00 17.50 ATOM 51 CA ILE B 60 23.768 61.575 91.897 1.00 21.72 ATOM 52 CA HIS B 61 22.901 64.629 89.751 1.00 21.81 ATOM 53 CA GLY B 62 20.063 65.885 91.929 1.00 25.44 ATOM 54 CA GLY B 63 18.624 62.478 92.697 1.00 23.34 ATOM 55 CA LYS B 64 18.255 61.799 88.971 1.00 25.81 ATOM 56 CA MET B 65 20.327 58.639 88.813 1.00 21.71 ATOM 57 CA CYS B 66 20.445 56.163 91.671 1.00 20.55 ATOM 58 CA LEU B 67 22.800 53.307 92.410 1.00 21.51 ATOM 59 CA SER B 68 21.238 49.845 92.639 1.00 22.90 ATOM 60 CA CYS B 69 22.559 46.292 93.059 1.00 28.77 ATOM 61 CA VAL B 70 21.337 43.648 90.591 1.00 35.07 ATOM 62 CA LYS B 71 22.011 39.885 90.356 1.00 40.82 ATOM 63 CA SER B 72 23.342 38.284 87.181 1.00 47.54 ATOM 64 CA GLY B 73 24.038 34.557 87.235 1.00 49.41 ATOM 65 CA ASP B 74 25.524 35.785 90.514 1.00 49.94 ATOM 66 CA GLU B 75 28.028 38.711 90.755 1.00 49.09 ATOM 67 CA THR B 76 26.072 41.695 91.844 1.00 43.30 ATOM 68 CA ARG B 77 26.606 44.584 89.519 1.00 36.00 ATOM 69 CA LEU B 78 26.417 48.121 90.918 1.00 29.72 ATOM 70 CA GLN B 79 24.574 49.828 88.068 1.00 26.58 ATOM 71 CA LEU B 80 23.426 53.444 87.985 1.00 24.35 ATOM 72 CA GLU B 81 19.777 53.952 87.036 1.00 28.51 ATOM 73 CA ALA B 82 17.680 56.884 85.829 1.00 28.23 ATOM 74 CA VAL B 83 15.062 57.016 88.589 1.00 28.45 ATOM 75 CA ASN B 84 14.342 60.142 90.614 1.00 26.42 ATOM 76 CA ILE B 85 15.439 59.337 94.197 1.00 22.44 ATOM 77 CA THR B 86 12.166 60.760 95.524 1.00 28.12 ATOM 78 CA ASP B 87 10.182 58.133 93.556 1.00 25.78 ATOM 79 CA LEU B 88 11.706 55.436 95.727 1.00 21.50 ATOM 80 CA SER B 89 10.060 54.121 98.824 1.00 20.83 ATOM 81 CA GLU B 90 11.541 52.283 101.757 1.00 23.85 ATOM 82 CA ASN B 91 8.241 50.399 101.975 1.00 21.87 ATOM 83 CA ARG B 92 8.029 49.142 98.410 1.00 19.60 ATOM 84 CA LYS B 93 9.565 45.683 97.862 1.00 27.40 ATOM 85 CA GLN B 94 10.883 46.392 94.329 1.00 30.24 ATOM 86 CA ASP B 95 12.739 49.519 95.522 1.00 29.13 ATOM 87 CA LYS B 96 14.841 47.431 97.920 1.00 28.42 ATOM 88 CA ARG B 97 17.610 47.076 95.304 1.00 25.51 ATOM 89 CA PHE B 98 18.437 50.757 95.781 1.00 22.61 ATOM 90 CA ALA B 99 18.647 50.479 99.551 1.00 19.10 ATOM 91 CA PHE B 100 22.039 50.418 101.281 1.00 18.20 ATOM 92 CA ILE B 101 22.776 49.763 104.992 1.00 22.13 ATOM 93 CA ARG B 102 25.200 52.261 106.407 1.00 26.42 ATOM 94 CA SER B 103 27.805 51.588 109.080 1.00 27.12 ATOM 95 CA ASP B 104 30.402 53.825 110.593 1.00 32.42 ATOM 96 CA SER B 105 33.604 52.803 112.349 1.00 34.85 ATOM 97 CA GLY B 106 35.837 55.519 113.680 1.00 31.53 ATOM 98 CA PRO B 107 35.978 58.300 111.024 1.00 28.70 ATOM 99 CA THR B 108 35.066 55.941 108.136 1.00 25.02 ATOM 100 CA THR B 109 31.727 54.664 106.679 1.00 23.05 ATOM 101 CA SER B 110 30.783 51.540 104.654 1.00 18.98 ATOM 102 CA PHE B 111 27.746 50.613 102.551 1.00 18.64 ATOM 103 CA GLU B 112 26.142 47.187 102.464 1.00 21.83 ATOM 104 CA SER B 113 23.594 46.214 99.816 1.00 24.00 ATOM 105 CA ALA B 114 20.140 45.609 101.273 1.00 26.06 ATOM 106 CA ALA B 115 18.928 43.488 98.304 1.00 28.22 ATOM 107 CA CYS B 116 22.185 41.569 97.946 1.00 32.34 ATOM 108 CA PRO B 117 23.333 41.264 101.569 1.00 29.71 ATOM 109 CA GLY B 118 26.985 40.658 102.245 1.00 28.85 ATOM 110 CA TRP B 119 28.043 42.933 99.432 1.00 26.48 ATOM 111 CA PHE B 120 29.668 46.309 100.057 1.00 20.40 ATOM 112 CA LEU B 121 30.330 49.348 97.843 1.00 17.12 ATOM 113 CA CYS B 122 34.058 49.391 97.038 1.00 16.92 ATOM 114 CA THR B 123 36.862 50.948 95.024 1.00 17.10 ATOM 115 CA ALA B 124 40.166 49.635 93.683 1.00 18.60 ATOM 116 CA MET B 125 43.693 50.518 94.802 1.00 21.37 ATOM 117 CA GLU B 126 44.446 51.444 91.167 1.00 20.87 ATOM 118 CA ALA B 127 43.128 54.857 90.123 1.00 18.27 ATOM 119 CA ASP B 128 40.379 55.408 87.532 1.00 23.45 ATOM 120 CA GLN B 129 38.693 52.013 88.078 1.00 22.36 ATOM 121 CA PRO B 130 34.924 51.555 88.339 1.00 18.23 ATOM 122 CA VAL B 131 33.223 51.572 91.711 1.00 17.55 ATOM 123 CA SER B 132 31.643 48.137 92.247 1.00 21.52 ATOM 124 CA LEU B 133 30.654 45.642 94.975 1.00 23.85 ATOM 125 CA THR B 134 32.454 42.895 96.833 1.00 24.53 ATOM 126 CA ASN B 135 31.241 40.261 99.268 1.00 30.11 ATOM 127 CA MET B 136 34.827 40.151 100.511 1.00 33.81 ATOM 128 CA PRO B 137 35.437 43.269 102.610 1.00 38.65 ATOM 129 CA ASP B 138 38.378 41.460 104.159 1.00 42.47 ATOM 130 CA GLU B 139 40.439 39.899 101.357 1.00 43.05 ATOM 131 CA GLY B 140 42.902 42.830 101.465 1.00 38.20 ATOM 132 CA VAL B 141 42.158 43.793 97.851 1.00 32.33 ATOM 133 CA MET B 142 39.289 46.286 97.261 1.00 26.01 ATOM 134 CA VAL B 143 38.614 49.369 99.410 1.00 17.84 ATOM 135 CA THR B 144 35.414 49.368 101.462 1.00 17.97 ATOM 136 CA LYS B 145 35.947 52.233 103.931 1.00 17.09 ATOM 137 CA PHE B 146 34.990 55.802 103.007 1.00 16.14 ATOM 138 CA TYR B 147 34.903 59.322 104.312 1.00 18.76 ATOM 139 CA PHE B 148 31.237 60.364 104.010 1.00 19.75 ATOM 140 CA GLN B 149 31.045 64.066 104.879 1.00 28.16 ATOM 141 CA GLU B 150 27.681 65.819 105.120 1.00 31.28 ATOM 142 CA ASP B 151 27.752 68.609 102.623 1.00 34.87 ATOM 143 CA GLU B 152 24.104 69.442 103.436 1.00 41.25 TER