HEADER MEMBRANE PROTEIN 31-DEC-69 7BW2 TITLE Crystal Structure of Cyanobacterial PSI Monomer from T.elongatus at TITLE 2 6.5 A Resolution COMPND MOL_ID: 9; COMPND 2 MOLECULE: Photosystem I reaction center subunit PsaK; COMPND 3 CHAIN: K; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 6.50 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 PRO K 44 REMARK 465 ILE K 45 REMARK 465 ALA K 46 REMARK 465 LEU K 47 REMARK 465 PRO K 48 REMARK 465 ALA K 49 REMARK 465 LEU K 50 REMARK 465 PHE K 51 REMARK 465 GLU K 52 REMARK 465 GLY K 53 REMARK 465 PHE K 54 DBREF 7BW2 K 1 83 UNP P0A425 PSAK_THEEB 1 83 SEQRES 1 K 58 ILE LEU CYS ASN LEU PHE ALA ILE ALA LEU GLY ARG TYR SEQRES 2 K 58 ALA ILE GLN SER ARG GLY LYS GLY PRO GLY LEU PRO ILE SEQRES 3 K 58 ALA LEU PRO ALA LEU PHE GLU GLY PHE GLY LEU PRO GLU SEQRES 4 K 58 LEU LEU ALA THR THR SER PHE GLY HIS LEU LEU ALA ALA SEQRES 5 K 58 GLY VAL VAL SER GLY LEU ATOM 1 N ILE K 20 138.262 -39.020 28.205 1.00228.23 ATOM 2 CA ILE K 20 137.060 -38.884 29.074 1.00231.85 ATOM 3 C ILE K 20 135.840 -39.328 28.280 1.00245.03 ATOM 4 O ILE K 20 135.272 -40.383 28.598 1.00235.92 ATOM 5 CB ILE K 20 136.916 -37.439 29.597 1.00221.33 ATOM 6 N LEU K 21 135.480 -38.533 27.278 1.00273.85 ATOM 7 CA LEU K 21 134.306 -38.781 26.413 1.00300.79 ATOM 8 C LEU K 21 134.713 -39.712 25.278 1.00316.53 ATOM 9 O LEU K 21 133.856 -40.370 24.668 1.00327.82 ATOM 10 CB LEU K 21 133.795 -37.443 25.869 1.00310.99 ATOM 11 N CYS K 22 136.008 -39.753 24.992 1.00324.33 ATOM 12 CA CYS K 22 136.555 -40.592 23.906 1.00329.31 ATOM 13 C CYS K 22 136.521 -42.054 24.316 1.00340.11 ATOM 14 O CYS K 22 136.285 -42.915 23.467 1.00351.50 ATOM 15 CB CYS K 22 137.980 -40.180 23.554 1.00325.20 ATOM 16 N ASN K 23 136.752 -42.318 25.600 1.00341.83 ATOM 17 CA ASN K 23 136.732 -43.699 26.128 1.00337.50 ATOM 18 C ASN K 23 135.356 -44.302 25.843 1.00337.64 ATOM 19 O ASN K 23 135.263 -45.450 25.378 1.00344.63 ATOM 20 CB ASN K 23 137.063 -43.745 27.622 1.00329.33 ATOM 21 N LEU K 24 134.314 -43.522 26.116 1.00332.80 ATOM 22 CA LEU K 24 132.918 -43.952 25.904 1.00329.05 ATOM 23 C LEU K 24 132.677 -44.034 24.402 1.00329.47 ATOM 24 O LEU K 24 132.095 -45.044 23.921 1.00329.64 ATOM 25 CB LEU K 24 131.967 -42.943 26.559 1.00326.38 ATOM 26 N PHE K 25 133.128 -43.016 23.671 1.00329.51 ATOM 27 CA PHE K 25 132.925 -42.956 22.204 1.00328.65 ATOM 28 C PHE K 25 133.707 -44.059 21.501 1.00334.11 ATOM 29 O PHE K 25 133.379 -44.402 20.355 1.00336.40 ATOM 30 CB PHE K 25 133.342 -41.585 21.666 1.00323.60 ATOM 31 N ALA K 26 134.722 -44.611 22.167 1.00340.64 ATOM 32 CA ALA K 26 135.564 -45.665 21.576 1.00339.17 ATOM 33 C ALA K 26 134.829 -46.994 21.682 1.00332.84 ATOM 34 O ALA K 26 134.743 -47.734 20.679 1.00335.29 ATOM 35 CB ALA K 26 136.908 -45.724 22.261 1.00343.08 ATOM 36 N ILE K 27 134.283 -47.234 22.861 1.00318.99 ATOM 37 CA ILE K 27 133.569 -48.500 23.180 1.00301.44 ATOM 38 C ILE K 27 132.357 -48.631 22.289 1.00285.75 ATOM 39 O ILE K 27 132.087 -49.762 21.872 1.00273.57 ATOM 40 CB ILE K 27 133.174 -48.546 24.670 1.00301.39 ATOM 41 N ALA K 28 131.708 -47.507 21.965 1.00274.83 ATOM 42 CA ALA K 28 130.513 -47.525 21.109 1.00265.47 ATOM 43 C ALA K 28 130.897 -48.074 19.738 1.00252.99 ATOM 44 O ALA K 28 130.120 -48.897 19.132 1.00235.01 ATOM 45 CB ALA K 28 129.854 -46.170 21.015 1.00269.44 ATOM 46 N LEU K 29 132.030 -47.603 19.209 1.00252.44 ATOM 47 CA LEU K 29 132.512 -48.040 17.884 1.00255.89 ATOM 48 C LEU K 29 132.804 -49.542 17.950 1.00259.20 ATOM 49 O LEU K 29 132.428 -50.297 17.029 1.00258.83 ATOM 50 CB LEU K 29 133.769 -47.248 17.511 1.00256.94 ATOM 51 N GLY K 30 133.396 -49.939 19.097 1.00267.12 ATOM 52 CA GLY K 30 133.717 -51.348 19.354 1.00275.01 ATOM 53 C GLY K 30 132.461 -52.188 19.464 1.00276.89 ATOM 54 O GLY K 30 132.432 -53.352 18.964 1.00294.01 ATOM 55 N ARG K 31 131.445 -51.610 20.122 1.00266.01 ATOM 56 CA ARG K 31 130.160 -52.322 20.370 1.00261.88 ATOM 57 C ARG K 31 129.507 -52.624 19.023 1.00267.97 ATOM 58 O ARG K 31 128.910 -53.728 18.865 1.00266.25 ATOM 59 CB ARG K 31 129.269 -51.459 21.267 1.00252.59 ATOM 60 N TYR K 32 129.607 -51.690 18.078 1.00279.10 ATOM 61 CA TYR K 32 128.981 -51.869 16.750 1.00294.76 ATOM 62 C TYR K 32 129.834 -52.767 15.843 1.00315.52 ATOM 63 O TYR K 32 129.351 -53.075 14.742 1.00327.69 ATOM 64 CB TYR K 32 128.737 -50.514 16.083 1.00287.15 ATOM 65 N ALA K 33 131.073 -53.099 16.226 1.00332.00 ATOM 66 CA ALA K 33 131.926 -54.078 15.506 1.00334.88 ATOM 67 C ALA K 33 131.210 -55.433 15.511 1.00337.08 ATOM 68 O ALA K 33 131.504 -56.266 14.637 1.00342.01 ATOM 69 CB ALA K 33 133.295 -54.170 16.137 1.00335.15 ATOM 70 N ILE K 34 130.321 -55.620 16.494 1.00330.50 ATOM 71 CA ILE K 34 129.388 -56.774 16.644 1.00317.28 ATOM 72 C ILE K 34 128.008 -56.384 16.165 1.00305.92 ATOM 73 O ILE K 34 127.241 -57.273 15.723 1.00296.05 ATOM 74 CB ILE K 34 129.352 -57.255 18.109 1.00310.95 ATOM 75 N GLN K 35 127.704 -55.099 16.205 1.00299.80 ATOM 76 CA GLN K 35 126.384 -54.613 15.766 1.00296.63 ATOM 77 C GLN K 35 126.119 -55.022 14.324 1.00297.37 ATOM 78 O GLN K 35 127.049 -55.025 13.513 1.00298.82 ATOM 79 CB GLN K 35 126.296 -53.092 15.902 1.00295.80 ATOM 80 N SER K 36 124.883 -55.414 14.045 1.00300.11 ATOM 81 CA SER K 36 124.321 -55.553 12.687 1.00303.28 ATOM 82 C SER K 36 125.226 -56.328 11.724 1.00303.81 ATOM 83 O SER K 36 125.779 -55.666 10.828 1.00302.20 ATOM 84 CB SER K 36 124.003 -54.187 12.132 1.00302.77 ATOM 85 N ARG K 37 125.346 -57.652 11.923 1.00303.87 ATOM 86 CA ARG K 37 126.091 -58.624 11.090 1.00299.82 ATOM 87 C ARG K 37 127.548 -58.617 11.560 1.00298.11 ATOM 88 O ARG K 37 128.309 -59.464 11.093 1.00292.04 ATOM 89 CB ARG K 37 125.956 -58.301 9.596 1.00295.99 ATOM 90 N GLY K 38 127.882 -57.670 12.448 1.00301.64 ATOM 91 CA GLY K 38 129.170 -57.533 13.148 1.00305.10 ATOM 92 C GLY K 38 130.132 -56.662 12.376 1.00301.88 ATOM 93 O GLY K 38 129.740 -55.558 11.950 1.00300.49 ATOM 94 N LYS K 39 131.350 -57.168 12.212 1.00297.37 ATOM 95 CA LYS K 39 132.431 -56.529 11.420 1.00294.41 ATOM 96 C LYS K 39 133.245 -57.617 10.712 1.00296.23 ATOM 97 O LYS K 39 133.675 -58.560 11.410 1.00293.57 ATOM 98 CB LYS K 39 133.326 -55.681 12.330 1.00287.56 ATOM 99 N GLY K 40 133.341 -57.535 9.389 1.00300.72 ATOM 100 CA GLY K 40 134.198 -58.368 8.541 1.00298.90 ATOM 101 C GLY K 40 135.438 -57.571 8.173 1.00298.34 ATOM 102 O GLY K 40 135.351 -56.562 7.483 1.00307.87 ATOM 103 N PRO K 41 136.598 -57.950 8.737 1.00285.44 ATOM 104 CA PRO K 41 137.859 -57.265 8.437 1.00274.51 ATOM 105 C PRO K 41 137.790 -55.742 8.637 1.00269.39 ATOM 106 O PRO K 41 138.338 -55.023 7.818 1.00272.16 ATOM 107 CB PRO K 41 138.127 -57.616 6.966 1.00272.26 ATOM 108 N GLY K 42 137.136 -55.300 9.719 1.00259.75 ATOM 109 CA GLY K 42 136.925 -53.879 10.063 1.00250.53 ATOM 110 C GLY K 42 137.671 -53.489 11.328 1.00241.08 ATOM 111 O GLY K 42 137.376 -54.077 12.389 1.00231.21 ATOM 112 N LEU K 43 138.597 -52.530 11.217 1.00238.01 ATOM 113 CA LEU K 43 139.445 -52.026 12.333 1.00238.82 ATOM 114 C LEU K 43 138.597 -51.156 13.269 1.00242.32 ATOM 115 O LEU K 43 139.188 -50.589 14.213 1.00243.97 ATOM 116 CB LEU K 43 140.618 -51.230 11.750 1.00235.64 ATOM 117 N GLY K 55 134.280 -41.415 0.702 1.00291.45 ATOM 118 CA GLY K 55 134.306 -41.612 2.165 1.00297.18 ATOM 119 C GLY K 55 132.950 -41.366 2.789 1.00302.79 ATOM 120 O GLY K 55 132.423 -40.251 2.654 1.00293.38 ATOM 121 N LEU K 56 132.414 -42.371 3.480 1.00317.56 ATOM 122 CA LEU K 56 131.061 -42.324 4.083 1.00328.02 ATOM 123 C LEU K 56 131.165 -42.568 5.585 1.00337.37 ATOM 124 O LEU K 56 132.121 -43.185 6.057 1.00345.38 ATOM 125 CB LEU K 56 130.181 -43.378 3.404 1.00329.31 ATOM 126 N PRO K 57 130.168 -42.114 6.380 1.00343.82 ATOM 127 CA PRO K 57 130.167 -42.397 7.809 1.00347.65 ATOM 128 C PRO K 57 129.224 -43.556 8.077 1.00360.33 ATOM 129 O PRO K 57 128.841 -43.719 9.173 1.00370.71 ATOM 130 CB PRO K 57 129.676 -41.096 8.459 1.00338.33 ATOM 131 N GLU K 58 128.874 -44.297 7.036 1.00364.42 ATOM 132 CA GLU K 58 127.900 -45.394 7.157 1.00353.32 ATOM 133 C GLU K 58 128.343 -46.318 8.277 1.00344.01 ATOM 134 O GLU K 58 129.522 -46.723 8.283 1.00356.59 ATOM 135 CB GLU K 58 127.778 -46.159 5.836 1.00351.58 ATOM 136 N LEU K 59 127.440 -46.549 9.226 1.00325.41 ATOM 137 CA LEU K 59 127.700 -47.362 10.439 1.00319.94 ATOM 138 C LEU K 59 128.716 -46.670 11.360 1.00327.37 ATOM 139 O LEU K 59 129.298 -47.350 12.230 1.00329.93 ATOM 140 CB LEU K 59 128.204 -48.747 10.015 1.00309.52 ATOM 141 N LEU K 60 128.960 -45.376 11.141 1.00335.32 ATOM 142 CA LEU K 60 129.727 -44.537 12.094 1.00334.92 ATOM 143 C LEU K 60 128.764 -43.857 13.048 1.00333.81 ATOM 144 O LEU K 60 129.207 -42.960 13.793 1.00326.55 ATOM 145 CB LEU K 60 130.550 -43.500 11.318 1.00328.94 ATOM 146 N ALA K 61 127.501 -44.273 12.973 1.00333.17 ATOM 147 CA ALA K 61 126.382 -43.745 13.789 1.00328.44 ATOM 148 C ALA K 61 126.542 -44.238 15.227 1.00324.59 ATOM 149 O ALA K 61 125.899 -43.721 16.130 1.00316.90 ATOM 150 CB ALA K 61 125.065 -44.184 13.201 1.00328.23 ATOM 151 N THR K 62 127.425 -45.223 15.379 1.00323.33 ATOM 152 CA THR K 62 127.769 -45.804 16.680 1.00316.55 ATOM 153 C THR K 62 128.433 -44.695 17.479 1.00308.64 ATOM 154 O THR K 62 128.361 -44.679 18.730 1.00315.33 ATOM 155 CB THR K 62 128.674 -47.034 16.534 1.00316.67 ATOM 156 N THR K 63 129.029 -43.779 16.723 1.00291.69 ATOM 157 CA THR K 63 129.764 -42.606 17.238 1.00274.50 ATOM 158 C THR K 63 128.788 -41.649 17.898 1.00260.51 ATOM 159 O THR K 63 129.140 -41.028 18.913 1.00256.86 ATOM 160 CB THR K 63 130.553 -41.900 16.128 1.00269.85 ATOM 161 N SER K 64 127.580 -41.556 17.362 1.00249.39 ATOM 162 CA SER K 64 126.525 -40.712 17.954 1.00248.02 ATOM 163 C SER K 64 126.075 -41.347 19.263 1.00252.31 ATOM 164 O SER K 64 126.026 -40.638 20.293 1.00261.78 ATOM 165 CB SER K 64 125.374 -40.528 16.996 1.00242.75 ATOM 166 N PHE K 65 125.832 -42.657 19.234 1.00252.68 ATOM 167 CA PHE K 65 125.421 -43.479 20.399 1.00253.79 ATOM 168 C PHE K 65 126.512 -43.345 21.465 1.00262.84 ATOM 169 O PHE K 65 126.275 -43.287 22.734 1.00257.17 ATOM 170 CB PHE K 65 125.236 -44.939 19.976 1.00246.55 ATOM 171 N GLY K 66 127.729 -43.200 20.928 1.00277.28 ATOM 172 CA GLY K 66 128.940 -43.046 21.744 1.00285.56 ATOM 173 C GLY K 66 128.975 -41.767 22.544 1.00292.91 ATOM 174 O GLY K 66 129.149 -41.821 23.827 1.00299.65 ATOM 175 N HIS K 67 128.668 -40.682 21.860 1.00296.52 ATOM 176 CA HIS K 67 128.532 -39.334 22.411 1.00296.90 ATOM 177 C HIS K 67 127.372 -39.289 23.389 1.00304.30 ATOM 178 O HIS K 67 127.478 -38.571 24.380 1.00303.58 ATOM 179 CB HIS K 67 128.365 -38.325 21.265 1.00290.75 ATOM 180 N LEU K 68 126.316 -40.042 23.139 1.00311.71 ATOM 181 CA LEU K 68 125.165 -40.164 24.040 1.00312.48 ATOM 182 C LEU K 68 125.619 -40.758 25.367 1.00318.13 ATOM 183 O LEU K 68 125.414 -40.151 26.444 1.00320.12 ATOM 184 CB LEU K 68 124.105 -41.048 23.374 1.00307.41 ATOM 185 N LEU K 69 126.210 -41.937 25.279 1.00326.44 ATOM 186 CA LEU K 69 126.702 -42.672 26.466 1.00337.49 ATOM 187 C LEU K 69 127.657 -41.759 27.223 1.00350.70 ATOM 188 O LEU K 69 127.566 -41.661 28.476 1.00369.71 ATOM 189 CB LEU K 69 127.401 -43.958 26.012 1.00334.34 ATOM 190 N ALA K 70 128.495 -41.049 26.477 1.00350.02 ATOM 191 CA ALA K 70 129.521 -40.159 27.037 1.00338.26 ATOM 192 C ALA K 70 128.915 -38.936 27.711 1.00321.82 ATOM 193 O ALA K 70 129.347 -38.536 28.826 1.00313.92 ATOM 194 CB ALA K 70 130.492 -39.764 25.951 1.00342.72 ATOM 195 N ALA K 71 127.909 -38.363 27.079 1.00304.31 ATOM 196 CA ALA K 71 127.231 -37.154 27.610 1.00291.06 ATOM 197 C ALA K 71 126.514 -37.481 28.909 1.00281.65 ATOM 198 O ALA K 71 126.425 -36.609 29.837 1.00271.95 ATOM 199 CB ALA K 71 126.267 -36.618 26.581 1.00291.06 ATOM 200 N GLY K 72 126.002 -38.703 28.958 1.00276.43 ATOM 201 CA GLY K 72 125.334 -39.190 30.178 1.00268.50 ATOM 202 C GLY K 72 126.286 -39.306 31.351 1.00259.53 ATOM 203 O GLY K 72 125.939 -38.920 32.507 1.00255.91 ATOM 204 N VAL K 73 127.438 -39.920 31.050 1.00250.88 ATOM 205 CA VAL K 73 128.518 -40.074 32.054 1.00241.77 ATOM 206 C VAL K 73 128.844 -38.683 32.594 1.00235.51 ATOM 207 O VAL K 73 129.070 -37.766 31.764 1.00228.18 ATOM 208 CB VAL K 73 129.774 -40.759 31.479 1.00236.24 ATOM 209 N VAL K 74 128.834 -38.534 33.920 1.00232.24 ATOM 210 CA VAL K 74 129.057 -37.224 34.591 1.00224.13 ATOM 211 C VAL K 74 129.575 -37.409 36.018 1.00216.06 ATOM 212 O VAL K 74 129.338 -38.464 36.655 1.00222.44 ATOM 213 CB VAL K 74 127.777 -36.362 34.582 1.00221.41 ATOM 214 N SER K 75 130.201 -36.343 36.505 1.00199.49 ATOM 215 CA SER K 75 130.606 -36.169 37.913 1.00186.57 ATOM 216 C SER K 75 131.511 -37.338 38.313 1.00180.61 ATOM 217 O SER K 75 131.361 -37.837 39.438 1.00169.92 ATOM 218 CB SER K 75 129.404 -36.064 38.816 1.00181.49 ATOM 219 N GLY K 76 132.369 -37.767 37.382 1.00183.47 ATOM 220 CA GLY K 76 133.189 -38.979 37.477 1.00187.48 ATOM 221 C GLY K 76 134.146 -38.849 38.627 1.00193.60 ATOM 222 O GLY K 76 134.256 -39.796 39.405 1.00192.39 ATOM 223 N LEU K 77 134.740 -37.663 38.760 1.00204.12 ATOM 224 CA LEU K 77 135.700 -37.329 39.840 1.00211.74 ATOM 225 C LEU K 77 134.960 -36.608 40.974 1.00220.31 ATOM 226 O LEU K 77 134.297 -35.585 40.776 1.00229.08 ATOM 227 CB LEU K 77 136.819 -36.452 39.266 1.00211.50 TER