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 B 1 220 UNP Q9ZNA2 RECR_DEIRA 1 220 SEQRES 1 B 23 LEU HIS VAL CYS PRO ILE CYS PHE ASN ILE THR ASP ALA SEQRES 2 B 23 GLU LYS CYS ASP VAL CYS ALA ASP PRO SER ATOM 1 N LEU B 54 -12.017 58.726 7.348 1.00 96.00 ATOM 2 CA LEU B 54 -12.440 57.582 8.140 1.00 96.00 ATOM 3 C LEU B 54 -12.365 57.731 9.642 1.00 96.00 ATOM 4 O LEU B 54 -11.306 58.000 10.210 1.00 96.00 ATOM 5 CB LEU B 54 -11.654 56.332 7.737 1.00 96.00 ATOM 6 CG LEU B 54 -12.399 55.349 6.841 1.00 96.00 ATOM 7 CD1 LEU B 54 -12.916 56.060 5.627 1.00 96.00 ATOM 8 CD2 LEU B 54 -11.472 54.228 6.453 1.00 96.00 ATOM 9 N HIS B 55 -13.508 57.513 10.276 1.00 96.00 ATOM 10 CA HIS B 55 -13.622 57.576 11.716 1.00 96.00 ATOM 11 C HIS B 55 -14.646 56.554 12.172 1.00 96.00 ATOM 12 O HIS B 55 -15.393 55.988 11.371 1.00 96.00 ATOM 13 CB HIS B 55 -14.038 58.985 12.161 1.00 96.00 ATOM 14 CG HIS B 55 -15.327 59.451 11.567 1.00 96.00 ATOM 15 ND1 HIS B 55 -16.547 58.936 11.941 1.00 96.00 ATOM 16 CD2 HIS B 55 -15.585 60.375 10.611 1.00 96.00 ATOM 17 CE1 HIS B 55 -17.502 59.520 11.243 1.00 96.00 ATOM 18 NE2 HIS B 55 -16.946 60.397 10.427 1.00 96.00 ATOM 19 N VAL B 56 -14.672 56.320 13.473 1.00 96.00 ATOM 20 CA VAL B 56 -15.594 55.365 14.051 1.00 96.00 ATOM 21 C VAL B 56 -16.954 56.013 14.295 1.00 96.00 ATOM 22 O VAL B 56 -17.025 57.172 14.677 1.00 96.00 ATOM 23 CB VAL B 56 -15.007 54.807 15.377 1.00 96.00 ATOM 24 CG1 VAL B 56 -15.099 55.836 16.479 1.00 96.00 ATOM 25 CG2 VAL B 56 -15.705 53.543 15.748 1.00 96.00 ATOM 26 N CYS B 57 -18.031 55.270 14.055 1.00 96.00 ATOM 27 CA CYS B 57 -19.391 55.782 14.274 1.00 96.00 ATOM 28 C CYS B 57 -19.598 56.008 15.768 1.00 96.00 ATOM 29 O CYS B 57 -19.181 55.197 16.593 1.00 96.00 ATOM 30 CB CYS B 57 -20.440 54.783 13.744 1.00 96.00 ATOM 31 SG CYS B 57 -22.190 55.174 14.107 1.00 96.00 ATOM 32 N PRO B 58 -20.243 57.117 16.139 1.00 96.00 ATOM 33 CA PRO B 58 -20.481 57.420 17.552 1.00 96.00 ATOM 34 C PRO B 58 -21.488 56.484 18.237 1.00 96.00 ATOM 35 O PRO B 58 -21.345 56.178 19.421 1.00 96.00 ATOM 36 CB PRO B 58 -20.970 58.858 17.504 1.00 96.00 ATOM 37 CG PRO B 58 -21.762 58.880 16.224 1.00 96.00 ATOM 38 CD PRO B 58 -20.845 58.144 15.269 1.00 96.00 ATOM 39 N ILE B 59 -22.500 56.043 17.489 1.00 96.00 ATOM 40 CA ILE B 59 -23.542 55.151 18.013 1.00 96.00 ATOM 41 C ILE B 59 -22.965 53.749 18.152 1.00 96.00 ATOM 42 O ILE B 59 -22.626 53.301 19.253 1.00 96.00 ATOM 43 CB ILE B 59 -24.752 55.083 17.055 1.00 96.00 ATOM 44 CG1 ILE B 59 -25.241 56.499 16.717 1.00 96.00 ATOM 45 CG2 ILE B 59 -25.847 54.224 17.672 1.00 96.00 ATOM 46 CD1 ILE B 59 -25.462 57.408 17.925 1.00 96.00 ATOM 47 N CYS B 60 -22.908 53.045 17.026 1.00 96.00 ATOM 48 CA CYS B 60 -22.299 51.728 16.978 1.00 96.00 ATOM 49 C CYS B 60 -20.932 52.225 16.562 1.00 96.00 ATOM 50 O CYS B 60 -20.811 53.389 16.191 1.00 96.00 ATOM 51 CB CYS B 60 -22.902 50.890 15.857 1.00 96.00 ATOM 52 SG CYS B 60 -22.792 51.666 14.223 1.00 96.00 ATOM 53 N PHE B 61 -19.899 51.403 16.607 1.00 96.00 ATOM 54 CA PHE B 61 -18.610 51.928 16.196 1.00 96.00 ATOM 55 C PHE B 61 -18.117 51.337 14.883 1.00 96.00 ATOM 56 O PHE B 61 -16.945 50.988 14.720 1.00 96.00 ATOM 57 CB PHE B 61 -17.615 51.756 17.340 1.00 96.00 ATOM 58 CG PHE B 61 -17.924 52.646 18.510 1.00 96.00 ATOM 59 CD1 PHE B 61 -19.099 52.461 19.245 1.00 96.00 ATOM 60 CD2 PHE B 61 -17.113 53.734 18.811 1.00 96.00 ATOM 61 CE1 PHE B 61 -19.458 53.350 20.251 1.00 96.00 ATOM 62 CE2 PHE B 61 -17.463 54.632 19.819 1.00 96.00 ATOM 63 CZ PHE B 61 -18.641 54.443 20.539 1.00 96.00 ATOM 64 N ASN B 62 -19.052 51.236 13.944 1.00 96.00 ATOM 65 CA ASN B 62 -18.776 50.727 12.611 1.00 96.00 ATOM 66 C ASN B 62 -18.100 51.864 11.847 1.00 96.00 ATOM 67 O ASN B 62 -18.432 53.028 12.047 1.00 96.00 ATOM 68 CB ASN B 62 -20.087 50.324 11.937 1.00 96.00 ATOM 69 CG ASN B 62 -19.869 49.599 10.637 1.00 96.00 ATOM 70 OD1 ASN B 62 -19.037 48.694 10.553 1.00 96.00 ATOM 71 ND2 ASN B 62 -20.620 49.981 9.613 1.00 96.00 ATOM 72 N ILE B 63 -17.154 51.543 10.978 1.00 96.00 ATOM 73 CA ILE B 63 -16.438 52.578 10.243 1.00 96.00 ATOM 74 C ILE B 63 -17.249 53.364 9.212 1.00 96.00 ATOM 75 O ILE B 63 -18.006 52.786 8.424 1.00 96.00 ATOM 76 CB ILE B 63 -15.178 51.974 9.559 1.00 96.00 ATOM 77 CG1 ILE B 63 -14.141 51.627 10.629 1.00 96.00 ATOM 78 CG2 ILE B 63 -14.572 52.956 8.558 1.00 96.00 ATOM 79 CD1 ILE B 63 -12.851 51.075 10.078 1.00 96.00 ATOM 80 N THR B 64 -17.098 54.691 9.241 1.00 96.00 ATOM 81 CA THR B 64 -17.771 55.573 8.278 1.00 96.00 ATOM 82 C THR B 64 -17.063 56.905 8.138 1.00 96.00 ATOM 83 O THR B 64 -15.983 57.108 8.684 1.00 96.00 ATOM 84 CB THR B 64 -19.254 55.899 8.636 1.00 96.00 ATOM 85 OG1 THR B 64 -19.336 56.343 9.992 1.00 96.00 ATOM 86 CG2 THR B 64 -20.148 54.689 8.407 1.00 96.00 ATOM 87 N ASP B 65 -17.710 57.807 7.406 1.00 96.00 ATOM 88 CA ASP B 65 -17.198 59.146 7.148 1.00 96.00 ATOM 89 C ASP B 65 -18.280 60.204 7.432 1.00 96.00 ATOM 90 O ASP B 65 -18.130 61.371 7.056 1.00 96.00 ATOM 91 CB ASP B 65 -16.758 59.242 5.684 1.00 96.00 ATOM 92 CG ASP B 65 -17.896 58.938 4.714 1.00 96.00 ATOM 93 OD1 ASP B 65 -17.657 58.911 3.489 1.00 96.00 ATOM 94 OD2 ASP B 65 -19.037 58.728 5.179 1.00 96.00 ATOM 95 N ALA B 66 -19.362 59.794 8.097 1.00 96.00 ATOM 96 CA ALA B 66 -20.470 60.705 8.404 1.00 96.00 ATOM 97 C ALA B 66 -20.745 60.920 9.894 1.00 96.00 ATOM 98 O ALA B 66 -19.877 60.708 10.736 1.00 96.00 ATOM 99 CB ALA B 66 -21.742 60.215 7.716 1.00 96.00 ATOM 100 N GLU B 67 -21.960 61.369 10.202 1.00 96.00 ATOM 101 CA GLU B 67 -22.370 61.609 11.582 1.00 96.00 ATOM 102 C GLU B 67 -22.739 60.253 12.164 1.00 96.00 ATOM 103 O GLU B 67 -22.365 59.928 13.292 1.00 96.00 ATOM 104 CB GLU B 67 -23.583 62.556 11.638 1.00 96.00 ATOM 105 CG GLU B 67 -23.321 63.973 11.099 1.00 96.00 ATOM 106 CD GLU B 67 -24.519 64.922 11.253 1.00 96.00 ATOM 107 OE1 GLU B 67 -24.909 65.223 12.405 1.00 96.00 ATOM 108 OE2 GLU B 67 -25.071 65.372 10.221 1.00 96.00 ATOM 109 N LYS B 68 -23.478 59.465 11.382 1.00 96.00 ATOM 110 CA LYS B 68 -23.876 58.124 11.791 1.00 96.00 ATOM 111 C LYS B 68 -23.469 57.177 10.666 1.00 96.00 ATOM 112 O LYS B 68 -23.389 57.589 9.507 1.00 96.00 ATOM 113 CB LYS B 68 -25.392 58.019 11.989 1.00 96.00 ATOM 114 CG LYS B 68 -26.056 59.206 12.664 1.00 96.00 ATOM 115 CD LYS B 68 -26.320 60.319 11.658 1.00 96.00 ATOM 116 CE LYS B 68 -27.142 61.446 12.257 1.00 96.00 ATOM 117 NZ LYS B 68 -27.389 62.507 11.247 1.00 96.00 ATOM 118 N CYS B 69 -23.213 55.914 11.004 1.00 96.00 ATOM 119 CA CYS B 69 -22.836 54.934 9.994 1.00 96.00 ATOM 120 C CYS B 69 -24.027 54.708 9.053 1.00 96.00 ATOM 121 O CYS B 69 -25.169 54.973 9.424 1.00 96.00 ATOM 122 CB CYS B 69 -22.446 53.613 10.663 1.00 96.00 ATOM 123 SG CYS B 69 -23.837 52.693 11.363 1.00 96.00 ATOM 124 N ASP B 70 -23.770 54.222 7.840 1.00 96.00 ATOM 125 CA ASP B 70 -24.855 53.965 6.886 1.00 96.00 ATOM 126 C ASP B 70 -25.901 53.007 7.457 1.00 96.00 ATOM 127 O ASP B 70 -27.073 53.058 7.087 1.00 96.00 ATOM 128 CB ASP B 70 -24.312 53.378 5.580 1.00 96.00 ATOM 129 CG ASP B 70 -25.408 53.152 4.541 1.00 96.00 ATOM 130 OD1 ASP B 70 -26.082 54.134 4.148 1.00 96.00 ATOM 131 OD2 ASP B 70 -25.596 51.989 4.117 1.00 96.00 ATOM 132 N VAL B 71 -25.473 52.121 8.346 1.00 96.00 ATOM 133 CA VAL B 71 -26.382 51.171 8.965 1.00 96.00 ATOM 134 C VAL B 71 -27.299 51.903 9.929 1.00 96.00 ATOM 135 O VAL B 71 -28.509 51.693 9.931 1.00 96.00 ATOM 136 CB VAL B 71 -25.613 50.100 9.747 1.00 96.00 ATOM 137 CG1 VAL B 71 -26.580 49.256 10.562 1.00 96.00 ATOM 138 CG2 VAL B 71 -24.812 49.247 8.784 1.00 96.00 ATOM 139 N CYS B 72 -26.707 52.763 10.752 1.00 96.00 ATOM 140 CA CYS B 72 -27.471 53.531 11.720 1.00 96.00 ATOM 141 C CYS B 72 -28.467 54.427 10.976 1.00 96.00 ATOM 142 O CYS B 72 -29.649 54.471 11.318 1.00 96.00 ATOM 143 CB CYS B 72 -26.527 54.372 12.610 1.00 96.00 ATOM 144 SG CYS B 72 -25.535 53.441 13.866 1.00 96.00 ATOM 145 N ALA B 73 -27.995 55.112 9.940 1.00 96.00 ATOM 146 CA ALA B 73 -28.847 56.003 9.156 1.00 96.00 ATOM 147 C ALA B 73 -30.012 55.272 8.499 1.00 96.00 ATOM 148 O ALA B 73 -31.176 55.562 8.780 1.00 96.00 ATOM 149 CB ALA B 73 -28.023 56.708 8.091 1.00 96.00 ATOM 150 N ASP B 74 -29.684 54.339 7.611 1.00 96.00 ATOM 151 CA ASP B 74 -30.674 53.547 6.890 1.00 96.00 ATOM 152 C ASP B 74 -31.915 53.268 7.754 1.00 96.00 ATOM 153 O ASP B 74 -31.822 52.676 8.838 1.00 96.00 ATOM 154 CB ASP B 74 -30.046 52.233 6.446 1.00 96.00 ATOM 155 CG ASP B 74 -30.833 51.553 5.357 1.00 96.00 ATOM 156 OD1 ASP B 74 -32.081 51.532 5.444 1.00 96.00 ATOM 157 OD2 ASP B 74 -30.199 51.031 4.420 1.00 96.00 ATOM 158 N PRO B 75 -33.094 53.698 7.272 1.00 96.00 ATOM 159 CA PRO B 75 -34.395 53.544 7.933 1.00 96.00 ATOM 160 C PRO B 75 -35.112 52.218 7.673 1.00 96.00 ATOM 161 O PRO B 75 -36.032 51.852 8.413 1.00 96.00 ATOM 162 CB PRO B 75 -35.180 54.722 7.388 1.00 96.00 ATOM 163 CG PRO B 75 -34.724 54.740 5.953 1.00 96.00 ATOM 164 CD PRO B 75 -33.219 54.555 6.078 1.00 96.00 ATOM 165 N SER B 76 -34.708 51.510 6.620 1.00 96.00 ATOM 166 CA SER B 76 -35.330 50.231 6.285 1.00 96.00 ATOM 167 C SER B 76 -34.716 49.088 7.099 1.00 96.00 ATOM 168 O SER B 76 -35.177 47.946 7.026 1.00 96.00 ATOM 169 CB SER B 76 -35.181 49.936 4.786 1.00 96.00 ATOM 170 OG SER B 76 -33.826 49.717 4.422 1.00 96.00 ATOM 171 ZN ZN B 230 -23.467 53.196 13.294 1.00 96.00 TER