HEADER MEMBRANE PROTEIN 10-APR-14 4CY4 TITLE The Cryo-Electron Microscopy Structure of the CorA channel from TITLE 2 Methanocaldococcus jannaschii at 21.6 Angstrom in low magnesium. COMPND MOL_ID: 1; COMPND 2 MOLECULE: MAGNESIUM TRANSPORT PROTEIN CORA; COMPND 3 CHAIN: A, B, C, D, E; COMPND 4 ENGINEERED: YES; COMPND 5 RECOMBINANTLY OVER-EXPRESSED PROTEIN, SOLUBILIZED FROM MEMBRANE COMPND 6 OTHER_DETAILS: FRACTION. PURIFIED BY AFFINITY (HIS-TAG), SIZE EXCLUSION COMPND 7 CHROMATOGRAPHY. PROTEOLYTIC TAG CLEAVEAGE.; EXPDTA ELECTRON MICROSCOPY DBREF 4CY4 B 1 317 UNP Q58439 CORA_METJA 1 317 SEQRES 1 B 248 VAL ILE ALA ILE ALA LYS ASP GLY SER ILE VAL GLU PRO SEQRES 2 B 248 LYS LEU ASP GLU ILE SER PHE GLU ASP TYR ARG LEU ILE SEQRES 3 B 248 TRP ILE ASP CYS TYR ASP PRO LYS ASP GLU GLU LEU TYR SEQRES 4 B 248 LYS LEU SER LYS LYS ILE GLY ILE SER VAL SER ASP LEU SEQRES 5 B 248 GLN ILE GLY LEU ASP GLU GLN GLU ILE PRO ARG VAL GLU SEQRES 6 B 248 GLU ASP GLU ASP PHE TYR LEU ILE ILE TYR LYS ALA PRO SEQRES 7 B 248 LEU PHE GLU GLU ASP ILE THR THR THR SER LEU GLY ILE SEQRES 8 B 248 TYR ILE LYS ASN ASN LEU LEU LEU THR ILE HIS SER ASP SEQRES 9 B 248 LYS ILE LYS ALA ILE GLY ARG LEU HIS LYS LEU ILE SER SEQRES 10 B 248 THR LYS LYS PRO ARG ILE VAL PHE GLU ARG GLY ILE GLY SEQRES 11 B 248 PHE LEU LEU TYR HIS ILE LEU ASN GLU ILE THR ARG SER SEQRES 12 B 248 TYR SER ARG ILE LEU MET ASN LEU GLU ASP GLU LEU GLU SEQRES 13 B 248 GLU LEU GLU ASP LYS LEU LEU ALA GLY TYR ASP ARG GLU SEQRES 14 B 248 VAL MET GLU LYS ILE LEU GLY LEU ARG LYS THR LEU VAL SEQRES 15 B 248 TYR PHE HIS LYS SER LEU ILE ALA ASN ARG ASP VAL LEU SEQRES 16 B 248 VAL LEU LEU LYS ARG LYS TYR LEU PRO ILE THR THR LYS SEQRES 17 B 248 GLU ASP ARG GLU ASN PHE GLU ASP LEU TYR TYR ASP THR SEQRES 18 B 248 LEU GLN LEU ILE ASP MET SER ALA THR TYR ARG GLU VAL SEQRES 19 B 248 LEU THR SER MET MET ASP ILE THR LEU SER LEU GLU ASN SEQRES 20 B 248 ILE ATOM 1 CA VAL B 4 31.377 35.924 10.728 1.00169.95 ATOM 2 CA ILE B 5 30.876 37.667 14.079 1.00156.99 ATOM 3 CA ALA B 6 30.084 36.853 17.708 1.00120.90 ATOM 4 CA ILE B 7 27.322 38.608 19.705 1.00108.43 ATOM 5 CA ALA B 8 26.163 38.939 23.344 1.00100.52 ATOM 6 CA LYS B 9 23.345 39.639 25.910 1.00 92.38 ATOM 7 CA ASP B 10 21.995 39.942 29.565 1.00115.06 ATOM 8 CA GLY B 11 24.059 40.897 32.651 1.00140.03 ATOM 9 CA SER B 12 23.028 41.057 36.325 1.00150.26 ATOM 10 CA ILE B 13 20.367 43.768 36.093 1.00167.65 ATOM 11 CA VAL B 14 18.871 43.813 32.581 1.00172.24 ATOM 12 CA GLU B 15 20.383 42.895 29.178 1.00169.09 ATOM 13 CA PRO B 16 23.534 44.874 28.201 1.00168.36 ATOM 14 CA LYS B 17 25.390 43.952 25.059 1.00165.04 ATOM 15 CA LEU B 18 28.414 42.866 23.076 1.00197.47 ATOM 16 CA ASP B 19 31.979 42.942 23.896 1.00174.95 ATOM 17 CA GLU B 20 33.803 39.629 23.865 1.00152.82 ATOM 18 CA ILE B 21 36.480 39.759 26.567 1.00174.73 ATOM 19 CA SER B 22 34.429 41.663 29.143 1.00182.63 ATOM 20 CA PHE B 23 34.458 41.116 32.916 1.00207.58 ATOM 21 CA GLU B 24 30.990 39.464 33.082 1.00191.31 ATOM 22 CA ASP B 25 29.172 38.704 36.394 1.00186.83 ATOM 23 CA TYR B 26 26.207 38.608 33.999 1.00151.46 ATOM 24 CA ARG B 27 22.875 36.869 34.827 1.00133.71 ATOM 25 CA LEU B 28 22.934 34.664 31.720 1.00123.84 ATOM 26 CA ILE B 29 24.708 35.460 28.433 1.00115.37 ATOM 27 CA TRP B 30 23.770 34.539 24.863 1.00 97.67 ATOM 28 CA ILE B 31 26.712 34.451 22.466 1.00 97.08 ATOM 29 CA ASP B 32 26.071 33.962 18.751 1.00 96.31 ATOM 30 CA CYS B 33 28.839 32.780 16.406 1.00101.35 ATOM 31 CA TYR B 34 28.893 32.451 12.628 1.00 98.93 ATOM 32 CA ASP B 35 31.399 30.603 10.387 1.00118.80 ATOM 33 CA PRO B 36 34.209 31.848 12.625 1.00127.70 ATOM 34 CA LYS B 37 37.830 32.097 11.492 1.00141.34 ATOM 35 CA ASP B 38 40.317 29.934 13.365 1.00151.40 ATOM 36 CA GLU B 39 41.770 32.956 15.148 1.00164.18 ATOM 37 CA GLU B 40 38.454 34.384 16.361 1.00155.23 ATOM 38 CA LEU B 41 37.333 30.809 17.037 1.00143.24 ATOM 39 CA TYR B 42 40.345 30.279 19.281 1.00154.12 ATOM 40 CA LYS B 43 39.590 33.568 21.070 1.00147.90 ATOM 41 CA LEU B 44 36.143 32.131 21.730 1.00132.46 ATOM 42 CA SER B 45 37.556 28.829 23.003 1.00133.69 ATOM 43 CA LYS B 46 39.678 30.667 25.559 1.00140.17 ATOM 44 CA LYS B 47 36.917 33.021 26.730 1.00143.23 ATOM 45 CA ILE B 48 34.341 30.249 27.264 1.00145.15 ATOM 46 CA GLY B 49 36.441 27.307 28.474 1.00148.60 ATOM 47 CA ILE B 50 35.463 24.681 25.925 1.00131.00 ATOM 48 CA SER B 51 38.024 23.173 23.568 1.00132.12 ATOM 49 CA VAL B 52 38.396 24.527 20.047 1.00136.87 ATOM 50 CA SER B 53 37.959 20.836 19.231 1.00142.84 ATOM 51 CA ASP B 54 34.623 20.513 21.003 1.00135.63 ATOM 52 CA LEU B 55 33.555 23.780 19.365 1.00128.24 ATOM 53 CA GLN B 56 34.419 22.443 15.891 1.00143.46 ATOM 54 CA ILE B 57 31.650 19.834 16.043 1.00130.79 ATOM 55 CA GLY B 58 28.862 22.379 16.008 1.00120.16 ATOM 56 CA LEU B 59 30.463 23.435 12.765 1.00127.84 ATOM 57 CA ASP B 60 29.863 20.146 10.974 1.00134.69 ATOM 58 CA GLU B 61 26.890 20.928 8.753 1.00138.75 ATOM 59 CA GLN B 62 25.781 17.317 8.249 1.00137.99 ATOM 60 CA GLU B 63 26.283 16.492 11.964 1.00127.39 ATOM 61 CA ILE B 64 23.133 14.974 13.469 1.00 99.20 ATOM 62 CA PRO B 65 20.682 16.381 16.063 1.00 84.98 ATOM 63 CA ARG B 66 21.178 15.009 19.540 1.00 90.37 ATOM 64 CA VAL B 67 21.893 15.807 23.158 1.00 91.29 ATOM 65 CA GLU B 68 25.248 15.224 24.896 1.00108.88 ATOM 66 CA GLU B 69 25.637 15.482 28.689 1.00123.38 ATOM 67 CA ASP B 70 29.426 15.834 29.079 1.00140.81 ATOM 68 CA GLU B 71 31.063 17.391 32.138 1.00158.01 ATOM 69 CA ASP B 72 31.360 21.202 32.164 1.00159.07 ATOM 70 CA PHE B 73 28.921 21.873 29.304 1.00134.62 ATOM 71 CA TYR B 74 25.806 20.542 27.551 1.00103.10 ATOM 72 CA LEU B 75 25.793 19.836 23.848 1.00 96.25 ATOM 73 CA ILE B 76 22.623 20.187 21.792 1.00 83.37 ATOM 74 CA ILE B 77 22.737 19.635 18.043 1.00 64.73 ATOM 75 CA TYR B 78 19.642 20.815 16.175 1.00 63.22 ATOM 76 CA LYS B 79 18.688 21.076 12.469 1.00 72.23 ATOM 77 CA ALA B 80 17.410 24.420 11.104 1.00 63.93 ATOM 78 CA PRO B 81 16.138 25.261 7.644 1.00 56.12 ATOM 79 CA LEU B 82 18.384 26.940 5.024 1.00 75.89 ATOM 80 CA PHE B 83 16.925 28.953 2.142 1.00 90.18 ATOM 81 CA GLU B 84 19.477 30.360 -0.328 1.00111.26 ATOM 82 CA GLU B 85 17.801 30.753 -3.732 1.00161.13 ATOM 83 CA ASP B 86 15.670 27.803 -4.880 1.00187.56 ATOM 84 CA ILE B 87 17.870 25.424 -2.902 1.00142.80 ATOM 85 CA THR B 88 16.582 24.780 0.642 1.00 88.37 ATOM 86 CA THR B 89 18.296 22.592 3.306 1.00 75.76 ATOM 87 CA THR B 90 19.360 22.199 7.018 1.00 69.78 ATOM 88 CA SER B 91 22.294 23.069 9.581 1.00 91.05 ATOM 89 CA LEU B 92 23.315 23.990 13.254 1.00 77.89 ATOM 90 CA GLY B 93 24.633 23.171 16.812 1.00 93.27 ATOM 91 CA ILE B 94 24.501 24.575 20.439 1.00 83.44 ATOM 92 CA TYR B 95 26.666 24.494 23.635 1.00 92.30 ATOM 93 CA ILE B 96 25.462 25.391 27.135 1.00102.17 ATOM 94 CA LYS B 97 27.224 25.826 30.497 1.00109.11 ATOM 95 CA ASN B 98 26.314 27.866 33.606 1.00110.09 ATOM 96 CA ASN B 99 24.783 31.193 32.550 1.00110.04 ATOM 97 CA LEU B 100 26.249 30.716 29.054 1.00101.55 ATOM 98 CA LEU B 101 24.372 29.737 25.881 1.00 85.75 ATOM 99 CA LEU B 102 26.471 29.364 22.738 1.00 94.81 ATOM 100 CA THR B 103 25.131 29.091 19.182 1.00 98.61 ATOM 101 CA ILE B 104 27.791 28.339 16.609 1.00114.40 ATOM 102 CA HIS B 105 26.800 27.625 13.005 1.00107.27 ATOM 103 CA SER B 106 28.741 27.095 9.798 1.00110.21 ATOM 104 CA ASP B 107 25.741 28.368 7.829 1.00100.37 ATOM 105 CA LYS B 108 23.377 31.276 8.379 1.00 99.40 ATOM 106 CA ILE B 109 20.420 30.537 10.670 1.00 81.11 ATOM 107 CA LYS B 110 17.738 33.025 9.757 1.00 86.83 ATOM 108 CA ALA B 111 15.636 32.098 12.784 1.00 77.89 ATOM 109 CA ILE B 112 18.564 32.893 15.090 1.00 67.82 ATOM 110 CA GLY B 113 19.012 36.226 13.398 1.00 68.81 ATOM 111 CA ARG B 114 15.322 36.840 13.934 1.00 76.35 ATOM 112 CA LEU B 115 15.639 36.123 17.629 1.00 81.14 ATOM 113 CA HIS B 116 18.527 38.629 17.685 1.00101.79 ATOM 114 CA LYS B 117 16.614 41.476 16.020 1.00112.98 ATOM 115 CA LEU B 118 13.529 40.517 18.102 1.00114.33 ATOM 116 CA ILE B 119 15.210 40.644 21.488 1.00115.71 ATOM 117 CA SER B 120 17.183 43.768 20.651 1.00119.24 ATOM 118 CA THR B 121 14.595 46.180 19.194 1.00195.75 ATOM 119 CA LYS B 122 16.696 49.180 20.369 1.00213.22 ATOM 120 CA LYS B 123 16.369 50.363 22.915 1.00227.24 ATOM 121 CA PRO B 124 15.444 48.555 25.288 1.00228.62 ATOM 122 CA ARG B 125 12.561 46.063 25.625 1.00218.11 ATOM 123 CA ILE B 126 11.488 42.445 26.445 1.00217.21 ATOM 124 CA VAL B 127 12.261 41.597 30.088 1.00220.43 ATOM 125 CA PHE B 128 13.330 37.951 30.525 1.00198.85 ATOM 126 CA GLU B 129 12.891 36.197 33.887 1.00162.60 ATOM 127 CA ARG B 130 12.818 32.509 32.982 1.00125.91 ATOM 128 CA GLY B 131 16.415 31.422 32.448 1.00106.45 ATOM 129 CA ILE B 132 18.727 29.549 30.144 1.00 78.36 ATOM 130 CA GLY B 133 16.321 26.710 29.391 1.00 74.85 ATOM 131 CA PHE B 134 13.946 29.405 28.141 1.00 71.15 ATOM 132 CA LEU B 135 16.475 31.079 25.887 1.00 59.36 ATOM 133 CA LEU B 136 17.190 27.572 24.589 1.00 64.25 ATOM 134 CA TYR B 137 13.461 27.328 23.967 1.00 64.67 ATOM 135 CA HIS B 138 13.048 30.523 22.000 1.00 61.92 ATOM 136 CA ILE B 139 15.985 29.568 19.848 1.00 47.20 ATOM 137 CA LEU B 140 14.227 26.272 19.178 1.00 60.77 ATOM 138 CA ASN B 141 10.723 27.763 18.757 1.00 63.93 ATOM 139 CA GLU B 142 11.897 30.288 16.206 1.00 56.83 ATOM 140 CA ILE B 143 13.775 27.574 14.367 1.00 40.90 ATOM 141 CA THR B 144 10.541 25.521 14.373 1.00 42.75 ATOM 142 CA ARG B 145 8.457 28.396 13.081 1.00 45.58 ATOM 143 CA SER B 146 10.931 28.848 10.193 1.00 58.77 ATOM 144 CA TYR B 147 10.263 25.325 8.962 1.00 55.86 ATOM 145 CA SER B 148 6.619 26.202 9.419 1.00 51.27 ATOM 146 CA ARG B 149 6.634 29.244 7.098 1.00 64.32 ATOM 147 CA ILE B 150 8.906 27.623 4.491 1.00 53.73 ATOM 148 CA LEU B 151 6.410 24.749 4.455 1.00 54.91 ATOM 149 CA MET B 152 3.596 27.180 3.770 1.00 57.20 ATOM 150 CA ASN B 153 5.762 28.282 0.842 1.00 57.69 ATOM 151 CA LEU B 154 6.116 24.687 -0.409 1.00 67.57 ATOM 152 CA GLU B 155 2.390 24.280 -0.068 1.00 68.55 ATOM 153 CA ASP B 156 1.766 27.377 -2.229 1.00 83.86 ATOM 154 CA GLU B 157 4.482 26.357 -4.673 1.00 81.86 ATOM 155 CA LEU B 158 2.849 22.923 -4.626 1.00 86.92 ATOM 156 CA GLU B 159 -0.612 24.113 -5.554 1.00 97.07 ATOM 157 CA GLU B 160 1.109 26.111 -8.312 1.00126.28 ATOM 158 CA LEU B 161 2.178 22.930 -10.115 1.00110.11 ATOM 159 CA GLU B 162 -1.452 21.793 -10.059 1.00139.29 ATOM 160 CA ASP B 163 -2.829 23.231 -13.296 1.00162.21 ATOM 161 CA LYS B 164 0.496 23.155 -15.088 1.00146.63 ATOM 162 CA LEU B 165 0.405 19.381 -14.514 1.00138.10 ATOM 163 CA LEU B 166 -2.885 19.103 -16.415 1.00145.16 ATOM 164 CA ALA B 167 -0.980 19.834 -19.642 1.00159.33 ATOM 165 CA GLY B 168 0.540 16.329 -19.691 1.00148.71 ATOM 166 CA TYR B 169 4.076 15.053 -19.228 1.00132.69 ATOM 167 CA ASP B 170 6.492 17.988 -19.066 1.00126.00 ATOM 168 CA ARG B 171 10.152 17.353 -18.187 1.00127.14 ATOM 169 CA GLU B 172 10.552 20.668 -16.367 1.00108.61 ATOM 170 CA VAL B 173 7.301 20.283 -14.421 1.00 91.54 ATOM 171 CA MET B 174 8.667 16.889 -13.517 1.00 91.06 ATOM 172 CA GLU B 175 12.088 17.997 -12.301 1.00105.84 ATOM 173 CA LYS B 176 10.397 20.736 -10.268 1.00104.22 ATOM 174 CA ILE B 177 8.274 18.081 -8.535 1.00 85.71 ATOM 175 CA LEU B 178 11.276 15.801 -8.056 1.00 74.97 ATOM 176 CA GLY B 179 13.088 18.670 -6.417 1.00 81.63 ATOM 177 CA LEU B 180 10.222 19.566 -4.131 1.00 73.60 ATOM 178 CA ARG B 181 10.336 15.935 -3.110 1.00 77.92 ATOM 179 CA LYS B 182 14.079 16.097 -2.505 1.00 75.79 ATOM 180 CA THR B 183 13.679 19.096 -0.215 1.00 63.16 ATOM 181 CA LEU B 184 10.764 17.419 1.499 1.00 53.94 ATOM 182 CA VAL B 185 12.455 14.083 2.302 1.00 65.34 ATOM 183 CA TYR B 186 15.312 16.204 3.667 1.00 77.79 ATOM 184 CA PHE B 187 12.981 18.284 5.801 1.00 72.51 ATOM 185 CA HIS B 188 11.483 15.094 7.152 1.00 75.47 ATOM 186 CA LYS B 189 14.771 13.540 8.239 1.00 74.40 ATOM 187 CA SER B 190 15.810 16.651 10.086 1.00 74.31 ATOM 188 CA LEU B 191 12.292 17.261 11.488 1.00 59.76 ATOM 189 CA ILE B 192 12.234 13.714 12.888 1.00 57.15 ATOM 190 CA ALA B 193 15.578 14.166 14.566 1.00 62.61 ATOM 191 CA ASN B 194 14.661 17.495 16.120 1.00 61.61 ATOM 192 CA ARG B 195 11.533 15.782 17.335 1.00 63.82 ATOM 193 CA ASP B 196 13.358 13.166 19.310 1.00 72.11 ATOM 194 CA VAL B 197 15.593 15.885 20.762 1.00 64.06 ATOM 195 CA LEU B 198 12.528 17.702 22.015 1.00 66.49 ATOM 196 CA VAL B 199 11.249 14.315 23.346 1.00 57.49 ATOM 197 CA LEU B 200 14.392 14.550 25.397 1.00 64.88 ATOM 198 CA LEU B 201 14.157 18.093 26.784 1.00 65.25 ATOM 199 CA LYS B 202 10.494 17.372 27.642 1.00 69.92 ATOM 200 CA ARG B 203 11.269 13.962 29.210 1.00 70.32 ATOM 201 CA LYS B 204 14.621 13.809 31.035 1.00 79.84 ATOM 202 CA TYR B 205 14.887 15.966 34.144 1.00 95.06 ATOM 203 CA LEU B 206 17.883 18.302 33.789 1.00 94.82 ATOM 204 CA PRO B 207 19.752 21.105 35.685 1.00109.72 ATOM 205 CA ILE B 208 19.285 23.508 32.720 1.00 98.66 ATOM 206 CA THR B 209 15.519 23.184 32.350 1.00 83.10 ATOM 207 CA THR B 210 12.710 23.947 34.786 1.00 88.80 ATOM 208 CA LYS B 211 9.266 22.332 34.892 1.00 92.87 ATOM 209 CA GLU B 212 7.950 25.294 32.891 1.00 85.97 ATOM 210 CA ASP B 213 10.875 24.936 30.480 1.00 87.21 ATOM 211 CA ARG B 214 9.886 21.293 30.106 1.00101.81 ATOM 212 CA GLU B 215 6.265 22.114 29.336 1.00 93.78 ATOM 213 CA ASN B 216 7.484 24.575 26.671 1.00 69.75 ATOM 214 CA PHE B 217 9.684 21.933 25.076 1.00 61.48 ATOM 215 CA GLU B 218 6.573 19.750 25.044 1.00 68.34 ATOM 216 CA ASP B 219 4.471 22.249 23.163 1.00 60.42 ATOM 217 CA LEU B 220 7.375 22.484 20.704 1.00 54.17 ATOM 218 CA TYR B 221 7.304 18.693 20.480 1.00 57.25 ATOM 219 CA TYR B 222 3.662 18.622 19.437 1.00 60.80 ATOM 220 CA ASP B 223 4.332 21.409 16.929 1.00 53.40 ATOM 221 CA THR B 224 7.291 19.596 15.338 1.00 50.76 ATOM 222 CA LEU B 225 5.058 16.553 15.092 1.00 48.41 ATOM 223 CA GLN B 226 2.604 18.752 13.217 1.00 60.00 ATOM 224 CA LEU B 227 5.343 19.796 10.760 1.00 48.16 ATOM 225 CA ILE B 228 6.243 16.219 10.132 1.00 54.11 ATOM 226 CA ASP B 229 2.596 15.441 9.462 1.00 62.30 ATOM 227 CA MET B 230 2.356 18.347 7.064 1.00 56.64 ATOM 228 CA SER B 231 5.628 17.546 5.274 1.00 53.80 ATOM 229 CA ALA B 232 4.496 13.924 4.862 1.00 57.66 ATOM 230 CA THR B 233 1.173 14.925 3.416 1.00 56.37 ATOM 231 CA TYR B 234 2.897 17.162 0.881 1.00 55.17 ATOM 232 CA ARG B 235 5.130 14.302 -0.255 1.00 56.04 ATOM 233 CA GLU B 236 2.030 12.072 -0.701 1.00 63.37 ATOM 234 CA VAL B 237 0.441 14.790 -2.833 1.00 57.82 ATOM 235 CA LEU B 238 3.604 15.202 -4.929 1.00 71.42 ATOM 236 CA THR B 239 3.871 11.526 -5.675 1.00 70.33 ATOM 237 CA SER B 240 0.203 11.837 -6.511 1.00 68.11 ATOM 238 CA MET B 241 0.735 14.507 -9.163 1.00 75.56 ATOM 239 CA MET B 242 3.695 12.599 -10.552 1.00 80.42 ATOM 240 CA ASP B 243 1.777 9.366 -10.998 1.00 94.37 ATOM 241 CA ILE B 244 -1.340 11.055 -12.406 1.00 96.21 ATOM 242 CA THR B 245 0.429 12.903 -15.228 1.00105.82 ATOM 243 CA LEU B 246 2.917 10.158 -15.920 1.00103.10 ATOM 244 CA SER B 247 -0.054 7.869 -16.263 1.00 96.68 ATOM 245 CA LEU B 248 -2.236 10.301 -18.203 1.00101.20 ATOM 246 CA GLU B 249 0.323 9.800 -20.990 1.00102.11 ATOM 247 CA ASN B 250 -1.012 6.327 -21.815 1.00110.36 ATOM 248 CA ILE B 251 -4.329 7.658 -23.093 1.00117.21 TER