HEADER TRANSFERASE/OXIDOREDUCTASE/LYASE 03-JUN-03 1PJT TITLE The structure of the Ser128Ala point-mutant variant of CysG, the TITLE 2 multifunctional methyltransferase/dehydrogenase/ferrochelatase for TITLE 3 siroheme synthesis COMPND MOL_ID: 1; COMPND 2 MOLECULE: Siroheme synthase; COMPND 3 CHAIN: A, B; COMPND 4 MUTATION: YES; COMPND 5 EC: 2.1.1.107, 1.-.-.-, 4.99.1.-; COMPND 6 ENGINEERED: YES; COMPND 7 RESIDUES 1-212 (CYSGB) ARE A DEHYDROGENASE/FERROCHELATASE, RESIDUES COMPND 8 OTHER_DETAILS: 213-457 (CYSGA) ARE A BISMETHYLTRANSFERASE; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.80 ANGSTORMS DBREF 1PJT B 1 457 UNP P25924 CYSG_SALTY 1 457 SEQRES 1 B 34 PRO SER ILE ILE ASP ARG SER PRO LEU MET VAL ALA VAL SEQRES 2 B 34 SER ALA GLY GLY THR SER PRO VAL LEU ALA ARG LEU LEU SEQRES 3 B 34 ARG GLU LYS LEU GLU SER LEU LEU ATOM 1 N PRO B 114 -41.426 130.488 20.818 1.00 19.65 ATOM 2 CA PRO B 114 -40.301 131.415 20.975 1.00 20.25 ATOM 3 C PRO B 114 -39.465 131.151 22.220 1.00 20.60 ATOM 4 O PRO B 114 -39.822 130.332 23.066 1.00 21.31 ATOM 5 CB PRO B 114 -40.995 132.765 21.054 1.00 18.41 ATOM 6 CG PRO B 114 -42.224 132.424 21.828 1.00 18.57 ATOM 7 CD PRO B 114 -42.697 131.155 21.148 1.00 18.33 ATOM 8 N SER B 115 -38.337 131.843 22.312 1.00 21.48 ATOM 9 CA SER B 115 -37.476 131.759 23.485 1.00 22.09 ATOM 10 C SER B 115 -38.187 132.762 24.388 1.00 22.18 ATOM 11 O SER B 115 -38.629 133.808 23.908 1.00 22.94 ATOM 12 CB SER B 115 -36.067 132.235 23.136 1.00 23.54 ATOM 13 OG SER B 115 -35.401 131.255 22.364 1.00 24.97 ATOM 14 N ILE B 116 -38.315 132.469 25.676 1.00 21.35 ATOM 15 CA ILE B 116 -39.067 133.379 26.536 1.00 22.29 ATOM 16 C ILE B 116 -38.409 133.967 27.785 1.00 22.36 ATOM 17 O ILE B 116 -37.751 133.267 28.556 1.00 23.73 ATOM 18 CB ILE B 116 -40.396 132.698 26.966 1.00 21.27 ATOM 19 CG1 ILE B 116 -41.217 132.355 25.723 1.00 21.72 ATOM 20 CG2 ILE B 116 -41.187 133.610 27.892 1.00 20.60 ATOM 21 CD1 ILE B 116 -42.553 131.680 26.015 1.00 23.55 ATOM 22 N ILE B 117 -38.609 135.264 27.983 1.00 22.48 ATOM 23 CA ILE B 117 -38.084 135.943 29.165 1.00 23.08 ATOM 24 C ILE B 117 -39.304 136.269 30.032 1.00 22.39 ATOM 25 O ILE B 117 -40.110 137.146 29.707 1.00 21.97 ATOM 26 CB ILE B 117 -37.311 137.242 28.795 1.00 24.26 ATOM 27 CG1 ILE B 117 -36.179 136.931 27.807 1.00 25.47 ATOM 28 CG2 ILE B 117 -36.682 137.838 30.025 1.00 24.35 ATOM 29 CD1 ILE B 117 -36.646 136.695 26.384 1.00 26.93 ATOM 30 N ASP B 118 -39.440 135.541 31.133 1.00 22.28 ATOM 31 CA ASP B 118 -40.579 135.703 32.021 1.00 23.06 ATOM 32 C ASP B 118 -40.405 136.706 33.169 1.00 23.84 ATOM 33 O ASP B 118 -39.605 136.512 34.081 1.00 23.83 ATOM 34 CB ASP B 118 -40.959 134.330 32.577 1.00 23.33 ATOM 35 CG ASP B 118 -42.351 134.297 33.190 1.00 27.01 ATOM 36 OD1 ASP B 118 -42.718 133.236 33.741 1.00 27.20 ATOM 37 OD2 ASP B 118 -43.083 135.311 33.120 1.00 28.56 ATOM 38 N ARG B 119 -41.170 137.787 33.109 1.00 23.17 ATOM 39 CA ARG B 119 -41.157 138.811 34.137 1.00 23.19 ATOM 40 C ARG B 119 -42.624 139.132 34.351 1.00 22.81 ATOM 41 O ARG B 119 -43.009 140.291 34.561 1.00 21.41 ATOM 42 CB ARG B 119 -40.407 140.045 33.647 1.00 23.98 ATOM 43 CG ARG B 119 -38.932 139.831 33.512 1.00 25.64 ATOM 44 CD ARG B 119 -38.288 139.539 34.858 1.00 26.33 ATOM 45 NE ARG B 119 -36.848 139.323 34.727 1.00 29.79 ATOM 46 CZ ARG B 119 -36.294 138.346 34.008 1.00 30.98 ATOM 47 NH1 ARG B 119 -37.054 137.484 33.350 1.00 30.22 ATOM 48 NH2 ARG B 119 -34.975 138.230 33.943 1.00 31.97 ATOM 49 N SER B 120 -43.434 138.075 34.273 1.00 23.16 ATOM 50 CA SER B 120 -44.892 138.160 34.419 1.00 22.36 ATOM 51 C SER B 120 -45.339 139.190 35.440 1.00 18.96 ATOM 52 O SER B 120 -44.865 139.206 36.577 1.00 17.64 ATOM 53 CB SER B 120 -45.477 136.787 34.782 1.00 22.96 ATOM 54 OG SER B 120 -46.303 136.290 33.734 1.00 25.90 ATOM 55 N PRO B 121 -46.288 140.047 35.048 1.00 17.76 ATOM 56 CA PRO B 121 -46.910 140.044 33.718 1.00 17.50 ATOM 57 C PRO B 121 -46.110 140.623 32.545 1.00 18.89 ATOM 58 O PRO B 121 -46.666 140.762 31.451 1.00 18.42 ATOM 59 CB PRO B 121 -48.191 140.835 33.943 1.00 18.58 ATOM 60 CG PRO B 121 -47.748 141.883 34.960 1.00 15.89 ATOM 61 CD PRO B 121 -46.939 141.035 35.932 1.00 17.04 ATOM 62 N LEU B 122 -44.843 140.997 32.753 1.00 19.07 ATOM 63 CA LEU B 122 -44.034 141.536 31.648 1.00 17.39 ATOM 64 C LEU B 122 -43.342 140.369 30.982 1.00 19.53 ATOM 65 O LEU B 122 -42.616 139.628 31.636 1.00 22.32 ATOM 66 CB LEU B 122 -42.977 142.505 32.152 1.00 15.92 ATOM 67 CG LEU B 122 -42.204 143.341 31.120 1.00 14.85 ATOM 68 CD1 LEU B 122 -40.992 142.618 30.655 1.00 16.81 ATOM 69 CD2 LEU B 122 -43.076 143.677 29.948 1.00 15.48 ATOM 70 N MET B 123 -43.559 140.194 29.686 1.00 20.32 ATOM 71 CA MET B 123 -42.952 139.078 29.003 1.00 21.81 ATOM 72 C MET B 123 -42.349 139.429 27.670 1.00 22.58 ATOM 73 O MET B 123 -42.936 140.163 26.865 1.00 23.43 ATOM 74 CB MET B 123 -43.978 137.985 28.817 1.00 24.65 ATOM 75 CG MET B 123 -44.623 137.572 30.101 1.00 28.12 ATOM 76 SD MET B 123 -45.735 136.267 29.726 1.00 37.32 ATOM 77 CE MET B 123 -44.535 134.874 29.571 1.00 32.38 ATOM 78 N VAL B 124 -41.162 138.886 27.437 1.00 21.24 ATOM 79 CA VAL B 124 -40.458 139.138 26.201 1.00 17.98 ATOM 80 C VAL B 124 -40.220 137.792 25.535 1.00 17.39 ATOM 81 O VAL B 124 -39.959 136.794 26.205 1.00 16.28 ATOM 82 CB VAL B 124 -39.126 139.848 26.477 1.00 16.65 ATOM 83 CG1 VAL B 124 -38.693 140.622 25.260 1.00 15.86 ATOM 84 CG2 VAL B 124 -39.270 140.759 27.670 1.00 13.63 ATOM 85 N ALA B 125 -40.338 137.772 24.214 1.00 16.46 ATOM 86 CA ALA B 125 -40.148 136.558 23.442 1.00 15.99 ATOM 87 C ALA B 125 -39.217 136.859 22.278 1.00 15.95 ATOM 88 O ALA B 125 -39.251 137.955 21.714 1.00 16.40 ATOM 89 CB ALA B 125 -41.486 136.066 22.937 1.00 17.22 ATOM 90 N VAL B 126 -38.383 135.888 21.923 1.00 15.89 ATOM 91 CA VAL B 126 -37.429 136.060 20.829 1.00 16.07 ATOM 92 C VAL B 126 -37.446 134.871 19.880 1.00 17.12 ATOM 93 O VAL B 126 -37.360 133.717 20.312 1.00 14.96 ATOM 94 CB VAL B 126 -35.986 136.192 21.357 1.00 14.73 ATOM 95 CG1 VAL B 126 -35.047 136.437 20.209 1.00 15.04 ATOM 96 CG2 VAL B 126 -35.889 137.298 22.356 1.00 14.27 ATOM 97 N SER B 127 -37.547 135.146 18.586 1.00 19.88 ATOM 98 CA SER B 127 -37.537 134.064 17.603 1.00 23.86 ATOM 99 C SER B 127 -37.024 134.469 16.229 1.00 24.10 ATOM 100 O SER B 127 -37.233 135.582 15.775 1.00 25.54 ATOM 101 CB SER B 127 -38.929 133.454 17.457 1.00 23.36 ATOM 102 OG SER B 127 -38.821 132.104 17.032 1.00 24.91 ATOM 103 N ALA B 128 -36.348 133.544 15.569 1.00 26.72 ATOM 104 CA ALA B 128 -35.811 133.801 14.248 1.00 27.94 ATOM 105 C ALA B 128 -36.423 132.851 13.223 1.00 29.20 ATOM 106 O ALA B 128 -35.866 132.656 12.143 1.00 29.85 ATOM 107 CB ALA B 128 -34.313 133.651 14.270 1.00 28.32 ATOM 108 N GLY B 129 -37.562 132.257 13.573 1.00 29.72 ATOM 109 CA GLY B 129 -38.240 131.354 12.661 1.00 32.03 ATOM 110 C GLY B 129 -37.536 130.034 12.419 1.00 33.24 ATOM 111 O GLY B 129 -37.654 129.446 11.349 1.00 36.18 ATOM 112 N GLY B 130 -36.799 129.562 13.413 1.00 33.85 ATOM 113 CA GLY B 130 -36.103 128.302 13.267 1.00 34.47 ATOM 114 C GLY B 130 -34.886 128.372 12.366 1.00 34.77 ATOM 115 O GLY B 130 -34.401 127.349 11.876 1.00 35.46 ATOM 116 N THR B 131 -34.390 129.580 12.142 1.00 34.29 ATOM 117 CA THR B 131 -33.220 129.760 11.302 1.00 33.36 ATOM 118 C THR B 131 -31.990 129.840 12.178 1.00 31.79 ATOM 119 O THR B 131 -30.916 129.370 11.810 1.00 32.60 ATOM 120 CB THR B 131 -33.315 131.056 10.487 1.00 33.42 ATOM 121 OG1 THR B 131 -33.407 132.172 11.379 1.00 33.76 ATOM 122 CG2 THR B 131 -34.539 131.031 9.599 1.00 33.76 ATOM 123 N SER B 132 -32.159 130.423 13.355 1.00 29.98 ATOM 124 CA SER B 132 -31.038 130.594 14.251 1.00 29.36 ATOM 125 C SER B 132 -31.350 130.335 15.713 1.00 29.32 ATOM 126 O SER B 132 -31.279 131.238 16.540 1.00 27.93 ATOM 127 CB SER B 132 -30.492 132.005 14.083 1.00 27.78 ATOM 128 OG SER B 132 -31.156 132.641 13.006 1.00 26.25 ATOM 129 N PRO B 133 -31.689 129.087 16.057 1.00 29.37 ATOM 130 CA PRO B 133 -31.986 128.834 17.462 1.00 28.73 ATOM 131 C PRO B 133 -30.910 129.420 18.355 1.00 28.89 ATOM 132 O PRO B 133 -31.215 130.002 19.392 1.00 30.60 ATOM 133 CB PRO B 133 -32.037 127.312 17.535 1.00 29.62 ATOM 134 CG PRO B 133 -31.193 126.868 16.380 1.00 29.74 ATOM 135 CD PRO B 133 -31.613 127.825 15.305 1.00 29.53 ATOM 136 N VAL B 134 -29.655 129.279 17.931 1.00 26.84 ATOM 137 CA VAL B 134 -28.508 129.782 18.692 1.00 24.89 ATOM 138 C VAL B 134 -28.512 131.299 18.915 1.00 23.10 ATOM 139 O VAL B 134 -28.093 131.769 19.970 1.00 21.39 ATOM 140 CB VAL B 134 -27.178 129.367 18.009 1.00 25.13 ATOM 141 CG1 VAL B 134 -25.975 129.871 18.803 1.00 23.06 ATOM 142 CG2 VAL B 134 -27.120 127.862 17.907 1.00 27.28 ATOM 143 N LEU B 135 -28.976 132.057 17.924 1.00 21.51 ATOM 144 CA LEU B 135 -29.049 133.520 18.028 1.00 20.39 ATOM 145 C LEU B 135 -30.155 133.893 19.030 1.00 21.29 ATOM 146 O LEU B 135 -30.110 134.942 19.673 1.00 20.29 ATOM 147 CB LEU B 135 -29.379 134.137 16.664 1.00 18.33 ATOM 148 CG LEU B 135 -28.908 135.557 16.326 1.00 18.07 ATOM 149 CD1 LEU B 135 -29.874 136.173 15.326 1.00 18.26 ATOM 150 CD2 LEU B 135 -28.850 136.427 17.557 1.00 19.41 ATOM 151 N ALA B 136 -31.148 133.017 19.155 1.00 21.20 ATOM 152 CA ALA B 136 -32.253 133.237 20.069 1.00 21.72 ATOM 153 C ALA B 136 -31.833 133.082 21.538 1.00 23.11 ATOM 154 O ALA B 136 -32.293 133.839 22.389 1.00 23.89 ATOM 155 CB ALA B 136 -33.384 132.291 19.737 1.00 21.48 ATOM 156 N ARG B 137 -30.979 132.104 21.843 1.00 25.02 ATOM 157 CA ARG B 137 -30.513 131.922 23.216 1.00 26.42 ATOM 158 C ARG B 137 -29.564 133.067 23.529 1.00 25.37 ATOM 159 O ARG B 137 -29.526 133.578 24.645 1.00 25.13 ATOM 160 CB ARG B 137 -29.782 130.590 23.389 1.00 30.11 ATOM 161 CG ARG B 137 -30.668 129.370 23.230 1.00 37.81 ATOM 162 CD ARG B 137 -29.839 128.081 23.163 1.00 44.38 ATOM 163 NE ARG B 137 -28.478 128.346 22.693 1.00 49.92 ATOM 164 CZ ARG B 137 -27.703 127.469 22.054 1.00 52.35 ATOM 165 NH1 ARG B 137 -28.137 126.241 21.786 1.00 49.14 ATOM 166 NH2 ARG B 137 -26.474 127.828 21.686 1.00 54.18 ATOM 167 N LEU B 138 -28.795 133.473 22.532 1.00 23.91 ATOM 168 CA LEU B 138 -27.886 134.569 22.744 1.00 25.95 ATOM 169 C LEU B 138 -28.739 135.748 23.179 1.00 25.23 ATOM 170 O LEU B 138 -28.473 136.390 24.199 1.00 25.39 ATOM 171 CB LEU B 138 -27.120 134.885 21.455 1.00 27.80 ATOM 172 CG LEU B 138 -26.057 133.834 21.088 1.00 28.45 ATOM 173 CD1 LEU B 138 -25.355 134.239 19.808 1.00 27.25 ATOM 174 CD2 LEU B 138 -25.046 133.690 22.222 1.00 25.42 ATOM 175 N LEU B 139 -29.792 136.013 22.421 1.00 24.24 ATOM 176 CA LEU B 139 -30.670 137.116 22.765 1.00 23.80 ATOM 177 C LEU B 139 -31.460 136.877 24.053 1.00 22.95 ATOM 178 O LEU B 139 -31.655 137.816 24.830 1.00 22.12 ATOM 179 CB LEU B 139 -31.612 137.418 21.603 1.00 24.29 ATOM 180 CG LEU B 139 -30.860 138.010 20.417 1.00 25.69 ATOM 181 CD1 LEU B 139 -31.787 138.188 19.240 1.00 25.37 ATOM 182 CD2 LEU B 139 -30.240 139.340 20.839 1.00 27.66 ATOM 183 N ARG B 140 -31.906 135.641 24.293 1.00 20.60 ATOM 184 CA ARG B 140 -32.656 135.363 25.514 1.00 20.74 ATOM 185 C ARG B 140 -31.773 135.773 26.677 1.00 22.11 ATOM 186 O ARG B 140 -32.168 136.527 27.560 1.00 21.89 ATOM 187 CB ARG B 140 -32.995 133.882 25.654 1.00 18.01 ATOM 188 CG ARG B 140 -33.960 133.662 26.795 1.00 20.69 ATOM 189 CD ARG B 140 -33.984 132.247 27.328 1.00 24.62 ATOM 190 NE ARG B 140 -34.408 132.252 28.736 1.00 28.59 ATOM 191 CZ ARG B 140 -34.607 131.166 29.486 1.00 30.58 ATOM 192 NH1 ARG B 140 -34.433 129.947 28.978 1.00 31.30 ATOM 193 NH2 ARG B 140 -34.968 131.299 30.761 1.00 29.74 ATOM 194 N GLU B 141 -30.557 135.255 26.637 1.00 24.35 ATOM 195 CA GLU B 141 -29.524 135.508 27.612 1.00 24.60 ATOM 196 C GLU B 141 -29.324 137.000 27.885 1.00 25.66 ATOM 197 O GLU B 141 -29.410 137.444 29.025 1.00 25.16 ATOM 198 CB GLU B 141 -28.240 134.907 27.080 1.00 25.78 ATOM 199 CG GLU B 141 -27.028 135.160 27.902 1.00 28.60 ATOM 200 CD GLU B 141 -25.787 134.751 27.162 1.00 32.30 ATOM 201 OE1 GLU B 141 -25.793 133.656 26.539 1.00 31.28 ATOM 202 OE2 GLU B 141 -24.809 135.527 27.205 1.00 36.09 ATOM 203 N LYS B 142 -29.035 137.772 26.842 1.00 26.91 ATOM 204 CA LYS B 142 -28.819 139.209 27.014 1.00 27.83 ATOM 205 C LYS B 142 -30.012 139.856 27.720 1.00 27.74 ATOM 206 O LYS B 142 -29.856 140.627 28.668 1.00 28.58 ATOM 207 CB LYS B 142 -28.612 139.897 25.659 1.00 28.39 ATOM 208 CG LYS B 142 -27.305 139.593 24.963 1.00 32.42 ATOM 209 CD LYS B 142 -26.168 140.365 25.596 1.00 36.38 ATOM 210 CE LYS B 142 -24.831 140.075 24.925 1.00 37.94 ATOM 211 NZ LYS B 142 -23.687 140.511 25.790 1.00 37.08 ATOM 212 N LEU B 143 -31.210 139.539 27.252 1.00 26.74 ATOM 213 CA LEU B 143 -32.406 140.118 27.826 1.00 25.00 ATOM 214 C LEU B 143 -32.642 139.674 29.257 1.00 24.75 ATOM 215 O LEU B 143 -33.121 140.454 30.077 1.00 24.30 ATOM 216 CB LEU B 143 -33.602 139.771 26.955 1.00 25.60 ATOM 217 CG LEU B 143 -33.367 140.118 25.483 1.00 26.74 ATOM 218 CD1 LEU B 143 -34.625 139.794 24.707 1.00 27.92 ATOM 219 CD2 LEU B 143 -32.984 141.584 25.316 1.00 24.52 ATOM 220 N GLU B 144 -32.306 138.424 29.561 1.00 23.76 ATOM 221 CA GLU B 144 -32.484 137.902 30.912 1.00 22.94 ATOM 222 C GLU B 144 -31.680 138.705 31.936 1.00 22.93 ATOM 223 O GLU B 144 -32.154 138.974 33.038 1.00 22.94 ATOM 224 CB GLU B 144 -32.068 136.434 30.979 1.00 20.80 ATOM 225 CG GLU B 144 -33.090 135.462 30.428 1.00 21.19 ATOM 226 CD GLU B 144 -34.327 135.325 31.309 1.00 21.53 ATOM 227 OE1 GLU B 144 -35.133 134.402 31.049 1.00 19.58 ATOM 228 OE2 GLU B 144 -34.496 136.133 32.253 1.00 20.79 ATOM 229 N SER B 145 -30.466 139.088 31.567 1.00 23.16 ATOM 230 CA SER B 145 -29.609 139.852 32.464 1.00 23.97 ATOM 231 C SER B 145 -29.985 141.322 32.470 1.00 25.21 ATOM 232 O SER B 145 -29.757 142.019 33.449 1.00 25.57 ATOM 233 CB SER B 145 -28.136 139.715 32.058 1.00 23.20 ATOM 234 OG SER B 145 -27.829 140.526 30.938 1.00 19.69 ATOM 235 N LEU B 146 -30.562 141.803 31.381 1.00 25.76 ATOM 236 CA LEU B 146 -30.916 143.202 31.343 1.00 27.37 ATOM 237 C LEU B 146 -32.154 143.524 32.151 1.00 28.25 ATOM 238 O LEU B 146 -32.263 144.614 32.724 1.00 29.99 ATOM 239 CB LEU B 146 -31.100 143.673 29.904 1.00 27.58 ATOM 240 CG LEU B 146 -29.808 143.737 29.084 1.00 29.59 ATOM 241 CD1 LEU B 146 -30.055 144.571 27.840 1.00 30.36 ATOM 242 CD2 LEU B 146 -28.683 144.368 29.895 1.00 30.13 ATOM 243 N LEU B 147 -33.081 142.578 32.216 1.00 27.52 ATOM 244 CA LEU B 147 -34.322 142.808 32.939 1.00 26.92 ATOM 245 C LEU B 147 -34.236 142.331 34.357 1.00 27.02 ATOM 246 O LEU B 147 -34.136 141.136 34.605 1.00 30.51 ATOM 247 CB LEU B 147 -35.492 142.122 32.218 1.00 24.72 ATOM 248 CG LEU B 147 -36.141 142.874 31.038 1.00 22.80 ATOM 249 CD1 LEU B 147 -35.138 143.762 30.315 1.00 20.52 ATOM 250 CD2 LEU B 147 -36.736 141.856 30.087 1.00 23.63 ATOM 251 P PO4 B 503 -34.097 128.851 25.642 1.00 56.13 ATOM 252 O1 PO4 B 503 -34.645 129.850 24.691 1.00 52.71 ATOM 253 O2 PO4 B 503 -32.822 129.378 26.133 1.00 55.18 ATOM 254 O3 PO4 B 503 -33.814 127.555 24.973 1.00 55.56 ATOM 255 O4 PO4 B 503 -34.920 128.643 26.860 1.00 54.01 TER