HEADER ELECTRON TRANSPORT 08-DEC-09 3KZI TITLE Crystal Structure of Monomeric Form of Cyanobacterial Photosystem II COMPND MOL_ID: 18; COMPND 2 MOLECULE: Photosystem II reaction center X protein; COMPND 3 CHAIN: X; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 3.60 ANGSTORMS DBREF 3KZI X 11 50 UNP Q9F1R6 PSBX_THEEB 2 41 SEQRES 1 X 35 THR ILE THR PRO SER LEU LYS GLY PHE PHE ILE GLY LEU SEQRES 2 X 35 LEU SER GLY ALA VAL VAL LEU GLY LEU THR PHE ALA VAL SEQRES 3 X 35 LEU ILE ALA ILE SER GLN ILE ASP LYS ATOM 1 N THR X 1 34.470 -9.524 -85.153 1.00157.01 ATOM 2 CA THR X 1 33.121 -9.647 -84.602 1.00157.39 ATOM 3 C THR X 1 32.648 -11.097 -84.535 1.00155.76 ATOM 4 O THR X 1 32.928 -11.899 -85.437 1.00156.52 ATOM 5 CB THR X 1 32.082 -8.862 -85.439 1.00159.04 ATOM 6 OG1 THR X 1 31.207 -8.144 -84.556 1.00160.35 ATOM 7 CG2 THR X 1 31.233 -9.831 -86.313 1.00160.87 ATOM 8 N ILE X 2 31.897 -11.403 -83.475 1.00152.73 ATOM 9 CA ILE X 2 31.359 -12.740 -83.238 1.00149.44 ATOM 10 C ILE X 2 32.385 -13.799 -83.677 1.00146.42 ATOM 11 O ILE X 2 32.259 -14.465 -84.715 1.00146.91 ATOM 12 CB ILE X 2 30.003 -12.918 -83.966 1.00148.81 ATOM 13 CG1 ILE X 2 29.228 -14.097 -83.362 1.00146.94 ATOM 14 CG2 ILE X 2 30.234 -13.059 -85.473 1.00149.05 ATOM 15 CD1 ILE X 2 29.883 -15.451 -83.500 1.00144.11 ATOM 16 N THR X 3 33.423 -13.915 -82.851 1.00144.66 ATOM 17 CA THR X 3 34.524 -14.850 -83.055 1.00144.86 ATOM 18 C THR X 3 34.116 -16.208 -82.494 1.00143.88 ATOM 19 O THR X 3 33.182 -16.314 -81.699 1.00143.19 ATOM 20 CB THR X 3 35.805 -14.350 -82.326 1.00143.68 ATOM 21 OG1 THR X 3 35.571 -14.313 -80.914 1.00142.13 ATOM 22 CG2 THR X 3 36.171 -12.943 -82.782 1.00144.16 ATOM 23 N PRO X 4 34.811 -17.265 -82.907 1.00144.73 ATOM 24 CA PRO X 4 34.539 -18.635 -82.461 1.00147.49 ATOM 25 C PRO X 4 34.314 -18.773 -80.954 1.00147.85 ATOM 26 O PRO X 4 33.399 -19.478 -80.532 1.00148.44 ATOM 27 CB PRO X 4 35.767 -19.395 -82.934 1.00145.90 ATOM 28 CG PRO X 4 36.117 -18.683 -84.197 1.00145.78 ATOM 29 CD PRO X 4 35.957 -17.227 -83.825 1.00145.45 ATOM 30 N SER X 5 35.147 -18.106 -80.153 1.00149.19 ATOM 31 CA SER X 5 35.022 -18.154 -78.696 1.00150.95 ATOM 32 C SER X 5 33.792 -17.368 -78.227 1.00152.09 ATOM 33 O SER X 5 33.249 -17.632 -77.153 1.00151.61 ATOM 34 CB SER X 5 36.294 -17.604 -78.028 1.00150.42 ATOM 35 OG SER X 5 36.597 -16.287 -78.455 1.00150.65 ATOM 36 N LEU X 6 33.355 -16.410 -79.045 1.00154.35 ATOM 37 CA LEU X 6 32.177 -15.591 -78.743 1.00156.04 ATOM 38 C LEU X 6 30.921 -16.430 -78.957 1.00155.98 ATOM 39 O LEU X 6 29.942 -16.296 -78.233 1.00157.15 ATOM 40 CB LEU X 6 32.154 -14.353 -79.647 1.00157.82 ATOM 41 CG LEU X 6 30.990 -13.376 -79.513 1.00158.73 ATOM 42 CD1 LEU X 6 29.795 -13.937 -80.227 1.00160.55 ATOM 43 CD2 LEU X 6 30.674 -13.103 -78.057 1.00158.73 ATOM 44 N LYS X 7 30.970 -17.295 -79.964 1.00154.93 ATOM 45 CA LYS X 7 29.870 -18.196 -80.290 1.00154.57 ATOM 46 C LYS X 7 29.741 -19.231 -79.187 1.00154.73 ATOM 47 O LYS X 7 28.631 -19.583 -78.775 1.00155.02 ATOM 48 CB LYS X 7 30.149 -18.892 -81.622 1.00154.56 ATOM 49 CG LYS X 7 29.349 -20.153 -81.872 1.00153.53 ATOM 50 CD LYS X 7 29.630 -20.660 -83.273 1.00153.98 ATOM 51 CE LYS X 7 28.998 -22.019 -83.544 1.00155.31 ATOM 52 NZ LYS X 7 29.707 -23.132 -82.840 1.00155.71 ATOM 53 N GLY X 8 30.892 -19.718 -78.725 1.00153.96 ATOM 54 CA GLY X 8 30.925 -20.701 -77.658 1.00152.61 ATOM 55 C GLY X 8 30.342 -20.111 -76.389 1.00152.54 ATOM 56 O GLY X 8 29.636 -20.784 -75.646 1.00151.87 ATOM 57 N PHE X 9 30.629 -18.844 -76.141 1.00151.86 ATOM 58 CA PHE X 9 30.114 -18.181 -74.953 1.00151.78 ATOM 59 C PHE X 9 28.603 -18.227 -74.961 1.00152.43 ATOM 60 O PHE X 9 27.976 -18.478 -73.935 1.00152.51 ATOM 61 CB PHE X 9 30.557 -16.721 -74.914 1.00149.58 ATOM 62 CG PHE X 9 30.061 -15.971 -73.714 1.00148.84 ATOM 63 CD1 PHE X 9 30.630 -16.180 -72.466 1.00148.20 ATOM 64 CD2 PHE X 9 29.032 -15.047 -73.838 1.00147.17 ATOM 65 CE1 PHE X 9 30.184 -15.473 -71.354 1.00147.77 ATOM 66 CE2 PHE X 9 28.579 -14.335 -72.735 1.00146.60 ATOM 67 CZ PHE X 9 29.156 -14.548 -71.489 1.00147.25 ATOM 68 N PHE X 10 28.020 -17.964 -76.123 1.00152.35 ATOM 69 CA PHE X 10 26.572 -17.984 -76.254 1.00152.43 ATOM 70 C PHE X 10 26.073 -19.404 -76.043 1.00151.66 ATOM 71 O PHE X 10 25.101 -19.627 -75.321 1.00152.39 ATOM 72 CB PHE X 10 26.150 -17.466 -77.632 1.00153.13 ATOM 73 CG PHE X 10 26.375 -15.983 -77.822 1.00154.12 ATOM 74 CD1 PHE X 10 26.270 -15.100 -76.746 1.00154.75 ATOM 75 CD2 PHE X 10 26.642 -15.462 -79.091 1.00155.70 ATOM 76 CE1 PHE X 10 26.427 -13.718 -76.923 1.00156.41 ATOM 77 CE2 PHE X 10 26.799 -14.082 -79.285 1.00157.51 ATOM 78 CZ PHE X 10 26.690 -13.209 -78.196 1.00157.44 ATOM 79 N ILE X 11 26.752 -20.362 -76.662 1.00150.35 ATOM 80 CA ILE X 11 26.372 -21.759 -76.522 1.00149.33 ATOM 81 C ILE X 11 26.288 -22.162 -75.048 1.00148.78 ATOM 82 O ILE X 11 25.414 -22.941 -74.649 1.00146.65 ATOM 83 CB ILE X 11 27.384 -22.689 -77.202 1.00149.27 ATOM 84 CG1 ILE X 11 27.442 -22.397 -78.705 1.00149.31 ATOM 85 CG2 ILE X 11 27.014 -24.133 -76.923 1.00150.87 ATOM 86 CD1 ILE X 11 28.357 -23.350 -79.490 1.00148.68 ATOM 87 N GLY X 12 27.208 -21.638 -74.246 1.00149.14 ATOM 88 CA GLY X 12 27.217 -21.961 -72.835 1.00150.09 ATOM 89 C GLY X 12 26.244 -21.099 -72.073 1.00151.38 ATOM 90 O GLY X 12 25.680 -21.524 -71.068 1.00152.89 ATOM 91 N LEU X 13 26.044 -19.877 -72.545 1.00151.36 ATOM 92 CA LEU X 13 25.121 -18.959 -71.890 1.00150.85 ATOM 93 C LEU X 13 23.690 -19.404 -72.171 1.00150.08 ATOM 94 O LEU X 13 22.777 -19.163 -71.382 1.00149.68 ATOM 95 CB LEU X 13 25.344 -17.534 -72.403 1.00151.06 ATOM 96 CG LEU X 13 24.500 -16.436 -71.755 1.00150.98 ATOM 97 CD1 LEU X 13 24.628 -16.519 -70.241 1.00150.40 ATOM 98 CD2 LEU X 13 24.952 -15.073 -72.268 1.00151.76 ATOM 99 N LEU X 14 23.513 -20.065 -73.308 1.00149.18 ATOM 100 CA LEU X 14 22.212 -20.555 -73.720 1.00148.87 ATOM 101 C LEU X 14 21.979 -21.919 -73.081 1.00149.00 ATOM 102 O LEU X 14 20.909 -22.188 -72.534 1.00149.14 ATOM 103 CB LEU X 14 22.170 -20.653 -75.254 1.00149.55 ATOM 104 CG LEU X 14 20.958 -21.274 -75.951 1.00149.44 ATOM 105 CD1 LEU X 14 19.697 -20.492 -75.633 1.00150.62 ATOM 106 CD2 LEU X 14 21.234 -21.308 -77.433 1.00148.55 ATOM 107 N SER X 15 22.993 -22.776 -73.148 1.00148.59 ATOM 108 CA SER X 15 22.896 -24.113 -72.565 1.00148.65 ATOM 109 C SER X 15 22.722 -24.003 -71.047 1.00148.03 ATOM 110 O SER X 15 22.285 -24.948 -70.388 1.00147.83 ATOM 111 CB SER X 15 24.153 -24.942 -72.891 1.00148.51 ATOM 112 OG SER X 15 25.276 -24.517 -72.134 1.00149.21 ATOM 113 N GLY X 16 23.063 -22.840 -70.504 1.00147.44 ATOM 114 CA GLY X 16 22.927 -22.629 -69.079 1.00147.05 ATOM 115 C GLY X 16 21.506 -22.252 -68.725 1.00147.36 ATOM 116 O GLY X 16 20.881 -22.885 -67.865 1.00147.65 ATOM 117 N ALA X 17 20.991 -21.219 -69.387 1.00147.27 ATOM 118 CA ALA X 17 19.620 -20.767 -69.153 1.00146.72 ATOM 119 C ALA X 17 18.649 -21.949 -69.259 1.00146.85 ATOM 120 O ALA X 17 17.770 -22.102 -68.422 1.00146.34 ATOM 121 CB ALA X 17 19.244 -19.679 -70.157 1.00145.94 ATOM 122 N VAL X 18 18.819 -22.780 -70.283 1.00147.87 ATOM 123 CA VAL X 18 17.963 -23.945 -70.461 1.00149.10 ATOM 124 C VAL X 18 17.870 -24.760 -69.171 1.00151.65 ATOM 125 O VAL X 18 16.769 -25.052 -68.695 1.00152.49 ATOM 126 CB VAL X 18 18.482 -24.872 -71.581 1.00148.62 ATOM 127 CG1 VAL X 18 17.642 -26.143 -71.652 1.00147.68 ATOM 128 CG2 VAL X 18 18.434 -24.144 -72.912 1.00147.06 ATOM 129 N VAL X 19 19.024 -25.125 -68.615 1.00153.33 ATOM 130 CA VAL X 19 19.085 -25.909 -67.380 1.00156.03 ATOM 131 C VAL X 19 18.337 -25.219 -66.250 1.00157.28 ATOM 132 O VAL X 19 17.606 -25.864 -65.497 1.00157.84 ATOM 133 CB VAL X 19 20.535 -26.146 -66.936 1.00156.23 ATOM 134 CG1 VAL X 19 20.556 -26.903 -65.616 1.00155.29 ATOM 135 CG2 VAL X 19 21.275 -26.929 -68.010 1.00156.06 ATOM 136 N LEU X 20 18.539 -23.914 -66.116 1.00157.98 ATOM 137 CA LEU X 20 17.823 -23.158 -65.092 1.00158.69 ATOM 138 C LEU X 20 16.330 -23.287 -65.415 1.00159.37 ATOM 139 O LEU X 20 15.492 -23.459 -64.522 1.00158.91 ATOM 140 CB LEU X 20 18.224 -21.677 -65.135 1.00159.01 ATOM 141 CG LEU X 20 19.652 -21.317 -64.737 1.00159.40 ATOM 142 CD1 LEU X 20 19.925 -19.862 -65.091 1.00160.06 ATOM 143 CD2 LEU X 20 19.844 -21.578 -63.251 1.00158.45 ATOM 144 N GLY X 21 16.022 -23.204 -66.714 1.00159.89 ATOM 145 CA GLY X 21 14.658 -23.301 -67.195 1.00160.07 ATOM 146 C GLY X 21 13.979 -24.594 -66.809 1.00159.55 ATOM 147 O GLY X 21 13.155 -24.598 -65.887 1.00159.53 ATOM 148 N LEU X 22 14.318 -25.686 -67.496 1.00160.00 ATOM 149 CA LEU X 22 13.711 -26.986 -67.207 1.00160.79 ATOM 150 C LEU X 22 13.623 -27.218 -65.702 1.00162.17 ATOM 151 O LEU X 22 12.660 -27.804 -65.209 1.00163.27 ATOM 152 CB LEU X 22 14.513 -28.125 -67.841 1.00160.24 ATOM 153 CG LEU X 22 15.039 -27.893 -69.260 1.00159.08 ATOM 154 CD1 LEU X 22 15.229 -29.255 -69.922 1.00157.92 ATOM 155 CD2 LEU X 22 14.082 -27.029 -70.071 1.00158.14 ATOM 156 N THR X 23 14.630 -26.749 -64.975 1.00163.38 ATOM 157 CA THR X 23 14.653 -26.912 -63.531 1.00164.95 ATOM 158 C THR X 23 13.524 -26.134 -62.862 1.00166.78 ATOM 159 O THR X 23 12.732 -26.710 -62.105 1.00166.06 ATOM 160 CB THR X 23 16.018 -26.479 -62.945 1.00164.47 ATOM 161 OG1 THR X 23 17.020 -27.429 -63.337 1.00164.26 ATOM 162 CG2 THR X 23 15.961 -26.412 -61.419 1.00163.10 ATOM 163 N PHE X 24 13.435 -24.835 -63.130 1.00168.78 ATOM 164 CA PHE X 24 12.375 -24.059 -62.513 1.00171.36 ATOM 165 C PHE X 24 11.023 -24.405 -63.106 1.00171.97 ATOM 166 O PHE X 24 9.994 -24.247 -62.453 1.00172.62 ATOM 167 CB PHE X 24 12.672 -22.566 -62.602 1.00172.96 ATOM 168 CG PHE X 24 13.399 -22.041 -61.394 1.00174.91 ATOM 169 CD1 PHE X 24 14.609 -22.612 -60.992 1.00176.39 ATOM 170 CD2 PHE X 24 12.849 -21.026 -60.616 1.00175.91 ATOM 171 CE1 PHE X 24 15.260 -22.181 -59.828 1.00177.61 ATOM 172 CE2 PHE X 24 13.495 -20.587 -59.446 1.00177.15 ATOM 173 CZ PHE X 24 14.704 -21.170 -59.054 1.00177.66 ATOM 174 N ALA X 25 11.023 -24.899 -64.339 1.00172.18 ATOM 175 CA ALA X 25 9.776 -25.319 -64.970 1.00171.90 ATOM 176 C ALA X 25 9.253 -26.466 -64.100 1.00172.00 ATOM 177 O ALA X 25 8.288 -26.312 -63.351 1.00173.01 ATOM 178 CB ALA X 25 10.042 -25.818 -66.384 1.00170.16 ATOM 179 N VAL X 26 9.926 -27.610 -64.203 1.00171.08 ATOM 180 CA VAL X 26 9.581 -28.806 -63.436 1.00169.37 ATOM 181 C VAL X 26 9.198 -28.435 -62.004 1.00167.84 ATOM 182 O VAL X 26 8.129 -28.815 -61.523 1.00167.53 ATOM 183 CB VAL X 26 10.778 -29.800 -63.397 1.00170.57 ATOM 184 CG1 VAL X 26 10.446 -30.994 -62.519 1.00170.19 ATOM 185 CG2 VAL X 26 11.121 -30.256 -64.811 1.00171.79 ATOM 186 N LEU X 27 10.064 -27.681 -61.332 1.00165.88 ATOM 187 CA LEU X 27 9.808 -27.286 -59.953 1.00164.99 ATOM 188 C LEU X 27 8.502 -26.521 -59.776 1.00165.14 ATOM 189 O LEU X 27 7.616 -26.986 -59.060 1.00164.88 ATOM 190 CB LEU X 27 10.980 -26.468 -59.394 1.00162.71 ATOM 191 CG LEU X 27 12.282 -27.228 -59.108 1.00160.89 ATOM 192 CD1 LEU X 27 13.263 -26.287 -58.429 1.00160.80 ATOM 193 CD2 LEU X 27 12.015 -28.430 -58.220 1.00159.63 ATOM 194 N ILE X 28 8.373 -25.366 -60.428 1.00165.51 ATOM 195 CA ILE X 28 7.150 -24.560 -60.313 1.00166.33 ATOM 196 C ILE X 28 5.891 -25.404 -60.555 1.00166.36 ATOM 197 O ILE X 28 4.848 -25.159 -59.950 1.00168.28 ATOM 198 CB ILE X 28 7.124 -23.376 -61.322 1.00166.24 ATOM 199 CG1 ILE X 28 8.377 -22.504 -61.181 1.00166.27 ATOM 200 CG2 ILE X 28 5.882 -22.513 -61.062 1.00164.94 ATOM 201 CD1 ILE X 28 8.448 -21.718 -59.911 1.00167.38 ATOM 202 N ALA X 29 6.002 -26.396 -61.435 1.00165.16 ATOM 203 CA ALA X 29 4.880 -27.269 -61.760 1.00163.59 ATOM 204 C ALA X 29 4.523 -28.238 -60.628 1.00163.83 ATOM 205 O ALA X 29 3.414 -28.177 -60.075 1.00163.61 ATOM 206 CB ALA X 29 5.177 -28.043 -63.044 1.00160.73 ATOM 207 N ILE X 30 5.449 -29.136 -60.287 1.00163.92 ATOM 208 CA ILE X 30 5.205 -30.100 -59.217 1.00163.94 ATOM 209 C ILE X 30 4.849 -29.414 -57.900 1.00165.56 ATOM 210 O ILE X 30 4.123 -29.977 -57.076 1.00165.67 ATOM 211 CB ILE X 30 6.428 -31.028 -58.989 1.00162.88 ATOM 212 CG1 ILE X 30 6.433 -32.134 -60.043 1.00161.45 ATOM 213 CG2 ILE X 30 6.391 -31.638 -57.589 1.00161.95 ATOM 214 CD1 ILE X 30 7.516 -33.185 -59.833 1.00159.77 ATOM 215 N SER X 31 5.357 -28.197 -57.699 1.00166.71 ATOM 216 CA SER X 31 5.067 -27.462 -56.469 1.00168.05 ATOM 217 C SER X 31 3.569 -27.227 -56.412 1.00169.50 ATOM 218 O SER X 31 2.931 -27.369 -55.355 1.00169.14 ATOM 219 CB SER X 31 5.799 -26.112 -56.444 1.00168.19 ATOM 220 OG SER X 31 5.276 -25.195 -57.391 1.00167.60 ATOM 221 N GLN X 32 3.021 -26.876 -57.574 1.00170.02 ATOM 222 CA GLN X 32 1.606 -26.608 -57.720 1.00172.03 ATOM 223 C GLN X 32 0.892 -27.881 -58.147 1.00172.08 ATOM 224 O GLN X 32 0.401 -27.985 -59.266 1.00171.95 ATOM 225 CB GLN X 32 1.391 -25.489 -58.741 1.00172.17 ATOM 226 CG GLN X 32 0.503 -24.352 -58.228 1.00173.67 ATOM 227 CD GLN X 32 0.887 -22.990 -58.806 1.00174.33 ATOM 228 OE1 GLN X 32 0.254 -21.968 -58.512 1.00173.88 ATOM 229 NE2 GLN X 32 1.936 -22.971 -59.625 1.00176.25 ATOM 230 N ILE X 33 0.872 -28.855 -57.240 1.00172.60 ATOM 231 CA ILE X 33 0.205 -30.136 -57.444 1.00173.52 ATOM 232 C ILE X 33 -0.089 -30.763 -56.070 1.00175.04 ATOM 233 O ILE X 33 -0.697 -31.832 -55.989 1.00175.75 ATOM 234 CB ILE X 33 1.054 -31.090 -58.334 1.00171.99 ATOM 235 CG1 ILE X 33 1.024 -30.600 -59.785 1.00171.59 ATOM 236 CG2 ILE X 33 0.511 -32.516 -58.300 1.00171.44 ATOM 237 CD1 ILE X 33 1.705 -31.546 -60.775 1.00170.69 ATOM 238 N ASP X 34 0.333 -30.077 -54.999 1.00176.14 ATOM 239 CA ASP X 34 0.095 -30.506 -53.608 1.00177.02 ATOM 240 C ASP X 34 0.807 -29.646 -52.571 1.00176.47 ATOM 241 O ASP X 34 1.969 -29.283 -52.763 1.00175.93 ATOM 242 CB ASP X 34 0.467 -31.986 -53.400 1.00177.95 ATOM 243 CG ASP X 34 1.866 -32.322 -53.868 1.00179.54 ATOM 244 OD1 ASP X 34 2.249 -31.853 -54.962 1.00180.00 ATOM 245 OD2 ASP X 34 2.570 -33.077 -53.149 1.00180.00 ATOM 246 N LYS X 35 0.098 -29.323 -51.480 1.00176.76 ATOM 247 CA LYS X 35 0.610 -28.486 -50.375 1.00176.52 ATOM 248 C LYS X 35 -0.510 -28.031 -49.413 1.00176.24 ATOM 249 O LYS X 35 -0.361 -27.030 -48.700 1.00176.29 ATOM 250 CB LYS X 35 1.304 -27.235 -50.937 1.00175.56 ATOM 251 CG LYS X 35 0.379 -26.294 -51.736 1.00175.40 ATOM 252 CD LYS X 35 -0.197 -26.943 -53.009 1.00173.48 ATOM 253 CE LYS X 35 -1.096 -25.981 -53.786 1.00171.20 ATOM 254 NZ LYS X 35 -1.284 -26.378 -55.215 1.00169.35 TER