HEADER RECOMBINATION 23-MAY-07 2V1C TITLE CRYSTAL STRUCTURE AND MUTATIONAL STUDY OF RECOR PROVIDE INSIGHT INTO TITLE 2 ITS ROLE IN DNA REPAIR COMPND MOL_ID: 1; COMPND 2 MOLECULE: RECOMBINATION PROTEIN RECR; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 3.80 ANGSTORMS DBREF 2V1C A 1 220 UNP Q9ZNA2 RECR_DEIRA 1 220 SEQRES 1 A 23 LEU HIS VAL CYS PRO ILE CYS PHE ASN ILE THR ASP ALA SEQRES 2 A 23 GLU LYS CYS ASP VAL CYS ALA ASP PRO SER ATOM 1 N LEU A 54 -13.615 -8.081 5.769 1.00 96.00 ATOM 2 CA LEU A 54 -14.432 -6.879 5.757 1.00 96.00 ATOM 3 C LEU A 54 -15.618 -6.871 4.822 1.00 96.00 ATOM 4 O LEU A 54 -15.484 -7.047 3.610 1.00 96.00 ATOM 5 CB LEU A 54 -13.571 -5.649 5.455 1.00 96.00 ATOM 6 CG LEU A 54 -13.212 -4.788 6.661 1.00 96.00 ATOM 7 CD1 LEU A 54 -12.569 -5.634 7.717 1.00 96.00 ATOM 8 CD2 LEU A 54 -12.288 -3.681 6.224 1.00 96.00 ATOM 9 N HIS A 55 -16.662 -6.820 4.537 1.00 96.00 ATOM 10 CA HIS A 55 -17.902 -6.740 3.799 1.00 96.00 ATOM 11 C HIS A 55 -18.801 -5.712 4.458 1.00 96.00 ATOM 12 O HIS A 55 -18.547 -5.256 5.575 1.00 96.00 ATOM 13 CB HIS A 55 -18.593 -8.110 3.761 1.00 96.00 ATOM 14 CG HIS A 55 -18.886 -8.676 5.112 1.00 96.00 ATOM 15 ND1 HIS A 55 -19.864 -8.167 5.934 1.00 96.00 ATOM 16 CD2 HIS A 55 -18.317 -9.701 5.792 1.00 96.00 ATOM 17 CE1 HIS A 55 -19.887 -8.850 7.063 1.00 96.00 ATOM 18 NE2 HIS A 55 -18.957 -9.786 7.003 1.00 96.00 ATOM 19 N VAL A 56 -19.858 -5.349 3.753 1.00 96.00 ATOM 20 CA VAL A 56 -20.801 -4.372 4.255 1.00 96.00 ATOM 21 C VAL A 56 -21.829 -5.037 5.167 1.00 96.00 ATOM 22 O VAL A 56 -22.254 -6.153 4.907 1.00 96.00 ATOM 23 CB VAL A 56 -21.504 -3.663 3.065 1.00 96.00 ATOM 24 CG1 VAL A 56 -22.518 -4.578 2.418 1.00 96.00 ATOM 25 CG2 VAL A 56 -22.131 -2.393 3.528 1.00 96.00 ATOM 26 N CYS A 57 -22.209 -4.358 6.246 1.00 96.00 ATOM 27 CA CYS A 57 -23.207 -4.890 7.185 1.00 96.00 ATOM 28 C CYS A 57 -24.556 -4.972 6.476 1.00 96.00 ATOM 29 O CYS A 57 -24.934 -4.068 5.733 1.00 96.00 ATOM 30 CB CYS A 57 -23.322 -3.986 8.429 1.00 96.00 ATOM 31 SG CYS A 57 -24.655 -4.397 9.612 1.00 96.00 ATOM 32 N PRO A 58 -25.301 -6.058 6.693 1.00 96.00 ATOM 33 CA PRO A 58 -26.607 -6.224 6.052 1.00 96.00 ATOM 34 C PRO A 58 -27.688 -5.259 6.559 1.00 96.00 ATOM 35 O PRO A 58 -28.548 -4.828 5.789 1.00 96.00 ATOM 36 CB PRO A 58 -26.942 -7.676 6.354 1.00 96.00 ATOM 37 CG PRO A 58 -26.362 -7.853 7.732 1.00 96.00 ATOM 38 CD PRO A 58 -25.009 -7.187 7.595 1.00 96.00 ATOM 39 N ILE A 59 -27.638 -4.930 7.851 1.00 96.00 ATOM 40 CA ILE A 59 -28.612 -4.024 8.475 1.00 96.00 ATOM 41 C ILE A 59 -28.301 -2.596 8.045 1.00 96.00 ATOM 42 O ILE A 59 -28.971 -2.029 7.176 1.00 96.00 ATOM 43 CB ILE A 59 -28.528 -4.094 10.016 1.00 96.00 ATOM 44 CG1 ILE A 59 -28.627 -5.553 10.487 1.00 96.00 ATOM 45 CG2 ILE A 59 -29.610 -3.214 10.627 1.00 96.00 ATOM 46 CD1 ILE A 59 -29.794 -6.341 9.896 1.00 96.00 ATOM 47 N CYS A 60 -27.308 -2.009 8.705 1.00 96.00 ATOM 48 CA CYS A 60 -26.833 -0.683 8.349 1.00 96.00 ATOM 49 C CYS A 60 -25.735 -1.174 7.431 1.00 96.00 ATOM 50 O CYS A 60 -25.437 -2.364 7.446 1.00 96.00 ATOM 51 CB CYS A 60 -26.219 0.016 9.556 1.00 96.00 ATOM 52 SG CYS A 60 -24.876 -0.917 10.337 1.00 96.00 ATOM 53 N PHE A 61 -25.121 -0.317 6.635 1.00 96.00 ATOM 54 CA PHE A 61 -24.075 -0.838 5.776 1.00 96.00 ATOM 55 C PHE A 61 -22.685 -0.367 6.178 1.00 96.00 ATOM 56 O PHE A 61 -21.850 0.003 5.347 1.00 96.00 ATOM 57 CB PHE A 61 -24.417 -0.518 4.324 1.00 96.00 ATOM 58 CG PHE A 61 -25.603 -1.295 3.829 1.00 96.00 ATOM 59 CD1 PHE A 61 -26.869 -1.076 4.379 1.00 96.00 ATOM 60 CD2 PHE A 61 -25.446 -2.318 2.902 1.00 96.00 ATOM 61 CE1 PHE A 61 -27.951 -1.871 4.020 1.00 96.00 ATOM 62 CE2 PHE A 61 -26.526 -3.122 2.532 1.00 96.00 ATOM 63 CZ PHE A 61 -27.781 -2.900 3.094 1.00 96.00 ATOM 64 N ASN A 62 -22.456 -0.393 7.487 1.00 96.00 ATOM 65 CA ASN A 62 -21.180 -0.012 8.071 1.00 96.00 ATOM 66 C ASN A 62 -20.240 -1.197 7.862 1.00 96.00 ATOM 67 O ASN A 62 -20.669 -2.345 7.917 1.00 96.00 ATOM 68 CB ASN A 62 -21.367 0.277 9.560 1.00 96.00 ATOM 69 CG ASN A 62 -20.137 0.873 10.189 1.00 96.00 ATOM 70 OD1 ASN A 62 -19.530 1.793 9.638 1.00 96.00 ATOM 71 ND2 ASN A 62 -19.764 0.365 11.356 1.00 96.00 ATOM 72 N ILE A 63 -18.965 -0.934 7.616 1.00 96.00 ATOM 73 CA ILE A 63 -18.019 -2.014 7.366 1.00 96.00 ATOM 74 C ILE A 63 -17.701 -2.927 8.550 1.00 96.00 ATOM 75 O ILE A 63 -17.462 -2.457 9.669 1.00 96.00 ATOM 76 CB ILE A 63 -16.696 -1.441 6.783 1.00 96.00 ATOM 77 CG1 ILE A 63 -16.944 -0.952 5.354 1.00 96.00 ATOM 78 CG2 ILE A 63 -15.593 -2.498 6.780 1.00 96.00 ATOM 79 CD1 ILE A 63 -15.713 -0.416 4.667 1.00 96.00 ATOM 80 N THR A 64 -17.721 -4.239 8.297 1.00 96.00 ATOM 81 CA THR A 64 -17.383 -5.235 9.322 1.00 96.00 ATOM 82 C THR A 64 -16.944 -6.551 8.712 1.00 96.00 ATOM 83 O THR A 64 -16.774 -6.660 7.501 1.00 96.00 ATOM 84 CB THR A 64 -18.553 -5.573 10.296 1.00 96.00 ATOM 85 OG1 THR A 64 -19.731 -5.880 9.547 1.00 96.00 ATOM 86 CG2 THR A 64 -18.809 -4.423 11.260 1.00 96.00 ATOM 87 N ASP A 65 -16.780 -7.543 9.581 1.00 96.00 ATOM 88 CA ASP A 65 -16.359 -8.884 9.197 1.00 96.00 ATOM 89 C ASP A 65 -17.283 -9.942 9.825 1.00 96.00 ATOM 90 O ASP A 65 -16.963 -11.135 9.818 1.00 96.00 ATOM 91 CB ASP A 65 -14.919 -9.112 9.671 1.00 96.00 ATOM 92 CG ASP A 65 -14.771 -8.945 11.180 1.00 96.00 ATOM 93 OD1 ASP A 65 -13.636 -9.035 11.690 1.00 96.00 ATOM 94 OD2 ASP A 65 -15.796 -8.728 11.860 1.00 96.00 ATOM 95 N ALA A 66 -18.424 -9.504 10.360 1.00 96.00 ATOM 96 CA ALA A 66 -19.373 -10.415 11.008 1.00 96.00 ATOM 97 C ALA A 66 -20.756 -10.488 10.360 1.00 96.00 ATOM 98 O ALA A 66 -20.925 -10.163 9.188 1.00 96.00 ATOM 99 CB ALA A 66 -19.519 -10.040 12.481 1.00 96.00 ATOM 100 N GLU A 67 -21.739 -10.944 11.133 1.00 96.00 ATOM 101 CA GLU A 67 -23.114 -11.057 10.657 1.00 96.00 ATOM 102 C GLU A 67 -23.714 -9.660 10.739 1.00 96.00 ATOM 103 O GLU A 67 -24.394 -9.212 9.815 1.00 96.00 ATOM 104 CB GLU A 67 -23.920 -12.034 11.530 1.00 96.00 ATOM 105 CG GLU A 67 -23.420 -13.488 11.505 1.00 96.00 ATOM 106 CD GLU A 67 -24.300 -14.456 12.311 1.00 96.00 ATOM 107 OE1 GLU A 67 -25.480 -14.651 11.942 1.00 96.00 ATOM 108 OE2 GLU A 67 -23.808 -15.026 13.314 1.00 96.00 ATOM 109 N LYS A 68 -23.456 -8.981 11.857 1.00 96.00 ATOM 110 CA LYS A 68 -23.935 -7.621 12.062 1.00 96.00 ATOM 111 C LYS A 68 -22.725 -6.778 12.456 1.00 96.00 ATOM 112 O LYS A 68 -21.763 -7.304 13.021 1.00 96.00 ATOM 113 CB LYS A 68 -24.968 -7.546 13.191 1.00 96.00 ATOM 114 CG LYS A 68 -25.975 -8.681 13.244 1.00 96.00 ATOM 115 CD LYS A 68 -25.381 -9.899 13.940 1.00 96.00 ATOM 116 CE LYS A 68 -26.415 -10.985 14.171 1.00 96.00 ATOM 117 NZ LYS A 68 -25.804 -12.150 14.859 1.00 96.00 ATOM 118 N CYS A 69 -22.771 -5.480 12.162 1.00 96.00 ATOM 119 CA CYS A 69 -21.670 -4.594 12.519 1.00 96.00 ATOM 120 C CYS A 69 -21.580 -4.506 14.048 1.00 96.00 ATOM 121 O CYS A 69 -22.560 -4.770 14.743 1.00 96.00 ATOM 122 CB CYS A 69 -21.906 -3.201 11.930 1.00 96.00 ATOM 123 SG CYS A 69 -23.221 -2.263 12.741 1.00 96.00 ATOM 124 N ASP A 70 -20.415 -4.137 14.576 1.00 96.00 ATOM 125 CA ASP A 70 -20.252 -4.014 16.030 1.00 96.00 ATOM 126 C ASP A 70 -21.261 -3.039 16.636 1.00 96.00 ATOM 127 O ASP A 70 -21.642 -3.166 17.798 1.00 96.00 ATOM 128 CB ASP A 70 -18.838 -3.544 16.386 1.00 96.00 ATOM 129 CG ASP A 70 -18.614 -3.461 17.895 1.00 96.00 ATOM 130 OD1 ASP A 70 -18.749 -4.500 18.584 1.00 96.00 ATOM 131 OD2 ASP A 70 -18.305 -2.354 18.391 1.00 96.00 ATOM 132 N VAL A 71 -21.681 -2.053 15.852 1.00 96.00 ATOM 133 CA VAL A 71 -22.649 -1.076 16.320 1.00 96.00 ATOM 134 C VAL A 71 -24.009 -1.738 16.451 1.00 96.00 ATOM 135 O VAL A 71 -24.700 -1.569 17.454 1.00 96.00 ATOM 136 CB VAL A 71 -22.772 0.093 15.337 1.00 96.00 ATOM 137 CG1 VAL A 71 -23.941 0.982 15.730 1.00 96.00 ATOM 138 CG2 VAL A 71 -21.471 0.871 15.310 1.00 96.00 ATOM 139 N CYS A 72 -24.391 -2.489 15.423 1.00 96.00 ATOM 140 CA CYS A 72 -25.669 -3.181 15.424 1.00 96.00 ATOM 141 C CYS A 72 -25.696 -4.180 16.586 1.00 96.00 ATOM 142 O CYS A 72 -26.662 -4.229 17.349 1.00 96.00 ATOM 143 CB CYS A 72 -25.899 -3.896 14.073 1.00 96.00 ATOM 144 SG CYS A 72 -26.287 -2.810 12.624 1.00 96.00 ATOM 145 N ALA A 73 -24.625 -4.951 16.737 1.00 96.00 ATOM 146 CA ALA A 73 -24.538 -5.944 17.804 1.00 96.00 ATOM 147 C ALA A 73 -24.632 -5.323 19.192 1.00 96.00 ATOM 148 O ALA A 73 -25.553 -5.621 19.954 1.00 96.00 ATOM 149 CB ALA A 73 -23.238 -6.726 17.683 1.00 96.00 ATOM 150 N ASP A 74 -23.660 -4.474 19.515 1.00 96.00 ATOM 151 CA ASP A 74 -23.599 -3.793 20.803 1.00 96.00 ATOM 152 C ASP A 74 -25.001 -3.468 21.342 1.00 96.00 ATOM 153 O ASP A 74 -25.791 -2.768 20.695 1.00 96.00 ATOM 154 CB ASP A 74 -22.790 -2.510 20.658 1.00 96.00 ATOM 155 CG ASP A 74 -22.319 -1.970 21.983 1.00 96.00 ATOM 156 OD1 ASP A 74 -23.110 -1.981 22.952 1.00 96.00 ATOM 157 OD2 ASP A 74 -21.156 -1.525 22.049 1.00 96.00 ATOM 158 N PRO A 75 -25.320 -3.985 22.542 1.00 96.00 ATOM 159 CA PRO A 75 -26.601 -3.808 23.237 1.00 96.00 ATOM 160 C PRO A 75 -26.720 -2.541 24.084 1.00 96.00 ATOM 161 O PRO A 75 -27.831 -2.132 24.439 1.00 96.00 ATOM 162 CB PRO A 75 -26.687 -5.061 24.088 1.00 96.00 ATOM 163 CG PRO A 75 -25.256 -5.209 24.536 1.00 96.00 ATOM 164 CD PRO A 75 -24.475 -4.962 23.256 1.00 96.00 ATOM 165 N SER A 76 -25.586 -1.930 24.418 1.00 96.00 ATOM 166 CA SER A 76 -25.593 -0.713 25.227 1.00 96.00 ATOM 167 C SER A 76 -25.827 0.527 24.358 1.00 96.00 ATOM 168 O SER A 76 -25.961 1.640 24.874 1.00 96.00 ATOM 169 CB SER A 76 -24.269 -0.566 25.990 1.00 96.00 ATOM 170 OG SER A 76 -23.175 -0.340 25.116 1.00 96.00 ATOM 171 ZN ZN A 230 -24.608 -2.555 11.288 1.00 96.00 TER