HEADER SIGNALING PROTEIN 16-MAR-07 2P6A TITLE The structure of the Activin:Follistatin 315 complex COMPND MOL_ID: 2; COMPND 2 MOLECULE: Follistatin; COMPND 3 CHAIN: D, C; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 3.40 ANGSTORMS REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 GLY C 74 REMARK 465 LYS C 75 DBREF 2P6A C 1 315 UNP P19883 FST_HUMAN 30 344 SEQRES 1 C 25 GLU THR CYS GLU ASN VAL ASP CYS GLY PRO GLY LYS LYS SEQRES 2 C 25 CYS ARG MET ASN LYS LYS ASN LYS PRO ARG CYS VAL ATOM 1 N GLU C 64 46.922 51.189 25.752 1.00 80.56 ATOM 2 CA GLU C 64 47.890 50.105 25.688 1.00 82.05 ATOM 3 C GLU C 64 49.071 50.552 26.548 1.00 90.09 ATOM 4 O GLU C 64 50.233 50.285 26.235 1.00 98.19 ATOM 5 CB GLU C 64 48.334 49.847 24.248 1.00 90.50 ATOM 6 CG GLU C 64 48.863 51.079 23.536 1.00123.29 ATOM 7 CD GLU C 64 47.751 51.995 23.068 1.00127.49 ATOM 8 OE1 GLU C 64 48.055 52.891 22.248 1.00136.60 ATOM 9 OE2 GLU C 64 46.589 51.809 23.511 1.00116.07 ATOM 10 N THR C 65 48.757 51.273 27.621 1.00 94.59 ATOM 11 CA THR C 65 49.761 51.756 28.565 1.00103.41 ATOM 12 C THR C 65 49.077 52.203 29.846 1.00 97.24 ATOM 13 O THR C 65 48.156 53.023 29.811 1.00 96.87 ATOM 14 CB THR C 65 50.549 52.957 27.999 1.00117.24 ATOM 15 OG1 THR C 65 49.697 53.736 27.140 1.00 92.24 ATOM 16 CG2 THR C 65 51.758 52.476 27.214 1.00121.25 ATOM 17 N CYS C 66 49.530 51.676 30.979 1.00 96.30 ATOM 18 CA CYS C 66 48.900 52.022 32.250 1.00 94.81 ATOM 19 C CYS C 66 48.926 53.553 32.440 1.00 80.58 ATOM 20 O CYS C 66 49.438 54.068 33.430 1.00 91.89 ATOM 21 CB CYS C 66 49.536 51.263 33.440 1.00122.15 ATOM 22 SG CYS C 66 49.816 49.415 33.333 1.00109.62 ATOM 23 N GLU C 67 48.340 54.271 31.487 1.00 57.77 ATOM 24 CA GLU C 67 48.410 55.726 31.449 1.00 66.22 ATOM 25 C GLU C 67 47.645 56.435 32.565 1.00 72.94 ATOM 26 O GLU C 67 48.255 56.987 33.481 1.00 68.69 ATOM 27 CB GLU C 67 47.949 56.239 30.083 1.00 85.53 ATOM 28 CG GLU C 67 47.783 57.755 30.003 1.00 92.25 ATOM 29 CD GLU C 67 49.068 58.521 30.293 1.00 96.39 ATOM 30 OE1 GLU C 67 49.956 57.960 30.975 1.00112.22 ATOM 31 OE2 GLU C 67 49.178 59.692 29.857 1.00 74.25 ATOM 32 N ASN C 68 46.318 56.472 32.464 1.00 61.98 ATOM 33 CA ASN C 68 45.498 57.059 33.524 1.00 54.26 ATOM 34 C ASN C 68 44.625 55.997 34.158 1.00 83.33 ATOM 35 O ASN C 68 43.544 56.318 34.648 1.00 97.65 ATOM 36 CB ASN C 68 44.589 58.154 32.981 1.00 54.97 ATOM 37 CG ASN C 68 45.361 59.272 32.278 1.00 74.81 ATOM 38 OD1 ASN C 68 45.511 60.359 32.824 1.00 60.73 ATOM 39 ND2 ASN C 68 45.837 59.018 31.059 1.00 43.88 ATOM 40 N VAL C 69 45.116 54.755 34.144 1.00100.54 ATOM 41 CA VAL C 69 44.386 53.555 34.579 1.00 97.21 ATOM 42 C VAL C 69 43.992 53.574 36.053 1.00100.26 ATOM 43 O VAL C 69 44.629 54.233 36.869 1.00 99.83 ATOM 44 CB VAL C 69 45.259 52.291 34.424 1.00 89.04 ATOM 45 CG1 VAL C 69 45.607 52.021 32.976 1.00 87.40 ATOM 46 CG2 VAL C 69 46.513 52.443 35.255 1.00 91.22 ATOM 47 N ASP C 70 42.986 52.780 36.404 1.00102.93 ATOM 48 CA ASP C 70 42.535 52.740 37.778 1.00 94.39 ATOM 49 C ASP C 70 41.958 51.406 38.245 1.00108.15 ATOM 50 O ASP C 70 41.052 50.836 37.619 1.00106.93 ATOM 51 CB ASP C 70 41.532 53.850 38.022 1.00110.93 ATOM 52 CG ASP C 70 41.177 53.963 39.471 1.00134.82 ATOM 53 OD1 ASP C 70 41.826 53.254 40.274 1.00135.80 ATOM 54 OD2 ASP C 70 40.256 54.744 39.792 1.00165.56 ATOM 55 N CYS C 71 42.440 50.960 39.402 1.00103.96 ATOM 56 CA CYS C 71 42.153 49.618 39.886 1.00110.80 ATOM 57 C CYS C 71 42.550 49.417 41.370 1.00120.37 ATOM 58 O CYS C 71 43.703 49.646 41.758 1.00131.69 ATOM 59 CB CYS C 71 42.844 48.602 38.953 1.00118.27 ATOM 60 SG CYS C 71 44.604 48.987 38.567 1.00111.59 ATOM 61 N GLY C 72 41.589 49.007 42.201 1.00111.52 ATOM 62 CA GLY C 72 41.860 48.650 43.600 1.00104.71 ATOM 63 C GLY C 72 43.017 47.672 43.739 1.00113.22 ATOM 64 O GLY C 72 43.210 46.802 42.890 1.00133.97 ATOM 65 N PRO C 73 43.781 47.776 44.833 1.00108.54 ATOM 66 CA PRO C 73 45.033 47.041 45.012 1.00111.01 ATOM 67 C PRO C 73 45.114 45.722 44.239 1.00105.36 ATOM 68 O PRO C 73 45.312 45.744 43.011 1.00 93.05 ATOM 69 CB PRO C 73 45.060 46.786 46.516 1.00110.83 ATOM 70 CG PRO C 73 44.289 47.955 47.108 1.00108.24 ATOM 71 CD PRO C 73 43.439 48.575 46.020 1.00 91.70 ATOM 72 N LYS C 76 46.787 47.461 41.686 1.00 18.17 ATOM 73 CA LYS C 76 47.827 48.192 40.945 1.00 76.93 ATOM 74 C LYS C 76 48.083 47.654 39.521 1.00 79.50 ATOM 75 O LYS C 76 47.766 46.503 39.239 1.00109.10 ATOM 76 CB LYS C 76 49.118 48.218 41.753 1.00 75.57 ATOM 77 N CYS C 77 48.667 48.456 38.628 1.00111.13 ATOM 78 CA CYS C 77 48.851 48.027 37.231 1.00108.57 ATOM 79 C CYS C 77 50.180 47.366 36.908 1.00120.02 ATOM 80 O CYS C 77 51.229 47.741 37.439 1.00136.13 ATOM 81 CB CYS C 77 48.663 49.174 36.234 1.00112.78 ATOM 82 SG CYS C 77 48.418 48.529 34.545 1.00118.20 ATOM 83 N ARG C 78 50.135 46.405 35.993 1.00100.78 ATOM 84 CA ARG C 78 51.359 45.895 35.398 1.00 97.58 ATOM 85 C ARG C 78 51.031 45.562 33.969 1.00 90.32 ATOM 86 O ARG C 78 50.005 44.927 33.699 1.00 64.86 ATOM 87 CB ARG C 78 51.867 44.653 36.126 1.00 88.28 ATOM 88 N MET C 79 51.885 46.042 33.070 1.00 89.72 ATOM 89 CA MET C 79 51.821 45.664 31.665 1.00100.08 ATOM 90 C MET C 79 52.714 44.448 31.376 1.00103.59 ATOM 91 O MET C 79 53.708 44.226 32.072 1.00129.57 ATOM 92 CB MET C 79 52.266 46.847 30.814 1.00 97.43 ATOM 93 CG MET C 79 51.395 48.067 30.961 1.00 90.16 ATOM 94 SD MET C 79 51.732 49.223 29.619 1.00104.25 ATOM 95 CE MET C 79 53.405 49.717 30.033 1.00136.04 ATOM 96 N ASN C 80 52.368 43.667 30.354 1.00 81.76 ATOM 97 CA ASN C 80 53.171 42.501 29.980 1.00108.85 ATOM 98 C ASN C 80 52.579 41.641 28.853 1.00122.51 ATOM 99 O ASN C 80 51.350 41.508 28.718 1.00116.65 ATOM 100 CB ASN C 80 53.476 41.645 31.205 1.00108.06 ATOM 101 N LYS C 81 53.470 41.029 28.071 1.00134.58 ATOM 102 CA LYS C 81 53.069 40.218 26.925 1.00134.73 ATOM 103 C LYS C 81 52.931 41.070 25.662 1.00141.05 ATOM 104 O LYS C 81 53.867 41.787 25.268 1.00127.60 ATOM 105 CB LYS C 81 51.749 39.500 27.222 1.00132.02 ATOM 106 CG LYS C 81 51.798 38.646 28.471 1.00149.68 ATOM 107 CD LYS C 81 53.164 37.978 28.600 1.00162.62 ATOM 108 CE LYS C 81 53.157 36.867 29.652 1.00169.86 ATOM 109 NZ LYS C 81 52.361 35.674 29.213 1.00174.74 ATOM 110 N LYS C 82 51.773 40.937 25.011 1.00143.35 ATOM 111 CA LYS C 82 51.364 41.817 23.911 1.00129.15 ATOM 112 C LYS C 82 50.807 43.090 24.534 1.00120.61 ATOM 113 O LYS C 82 49.600 43.367 24.463 1.00 77.65 ATOM 114 CB LYS C 82 50.294 41.138 23.050 1.00119.40 ATOM 115 N ASN C 83 51.705 43.851 25.154 1.00118.75 ATOM 116 CA ASN C 83 51.308 44.899 26.090 1.00124.06 ATOM 117 C ASN C 83 49.794 44.978 26.208 1.00114.80 ATOM 118 O ASN C 83 49.147 45.839 25.615 1.00121.09 ATOM 119 CB ASN C 83 51.901 46.263 25.714 1.00133.37 ATOM 120 CG ASN C 83 52.209 47.137 26.939 1.00124.50 ATOM 121 OD1 ASN C 83 52.856 46.693 27.890 1.00105.41 ATOM 122 ND2 ASN C 83 51.764 48.390 26.906 1.00119.70 ATOM 123 N LYS C 84 49.225 44.050 26.960 1.00 94.67 ATOM 124 CA LYS C 84 47.814 44.129 27.230 1.00 95.58 ATOM 125 C LYS C 84 47.661 44.441 28.711 1.00 92.32 ATOM 126 O LYS C 84 47.205 43.597 29.485 1.00103.05 ATOM 127 CB LYS C 84 47.130 42.820 26.846 1.00109.67 ATOM 128 CG LYS C 84 45.798 43.020 26.145 1.00122.60 ATOM 129 CD LYS C 84 45.936 44.034 25.010 1.00117.41 ATOM 130 CE LYS C 84 44.594 44.315 24.344 1.00120.58 ATOM 131 NZ LYS C 84 44.126 43.144 23.546 1.00118.09 ATOM 132 N PRO C 85 48.044 45.668 29.106 1.00 85.28 ATOM 133 CA PRO C 85 48.032 46.030 30.521 1.00 88.88 ATOM 134 C PRO C 85 46.830 45.466 31.316 1.00 94.92 ATOM 135 O PRO C 85 45.679 45.882 31.153 1.00 71.33 ATOM 136 CB PRO C 85 48.071 47.562 30.487 1.00 83.18 ATOM 137 CG PRO C 85 48.752 47.897 29.212 1.00 31.69 ATOM 138 CD PRO C 85 48.479 46.783 28.243 1.00 54.86 ATOM 139 N ARG C 86 47.095 44.473 32.152 1.00 85.23 ATOM 140 CA ARG C 86 46.044 43.946 32.998 1.00 94.88 ATOM 141 C ARG C 86 46.382 44.327 34.427 1.00 88.16 ATOM 142 O ARG C 86 47.462 44.006 34.917 1.00 92.67 ATOM 143 CB ARG C 86 45.922 42.430 32.845 1.00 95.25 ATOM 144 N CYS C 87 45.494 45.086 35.060 1.00 85.70 ATOM 145 CA CYS C 87 45.587 45.280 36.491 1.00 78.55 ATOM 146 C CYS C 87 45.442 43.917 37.150 1.00104.93 ATOM 147 O CYS C 87 44.550 43.117 36.818 1.00102.33 ATOM 148 CB CYS C 87 44.546 46.274 37.019 1.00 73.99 ATOM 149 SG CYS C 87 45.090 47.995 36.853 1.00105.14 ATOM 150 N VAL C 88 46.378 43.655 38.056 1.00115.56 ATOM 151 CA VAL C 88 46.398 42.430 38.825 1.00 91.37 ATOM 152 C VAL C 88 46.572 42.764 40.306 1.00103.10 ATOM 153 O VAL C 88 45.946 43.700 40.832 1.00 89.55 ATOM 154 CB VAL C 88 47.549 41.540 38.361 1.00 90.79 ATOM 155 CG1 VAL C 88 47.352 41.176 36.876 1.00 58.97 ATOM 156 CG2 VAL C 88 48.870 42.267 38.594 1.00 28.90 TER