HEADER TRANSFERASE 31-DEC-69 6RL5 TITLE The first crystal structure of the DABA aminotransferase EctB in the TITLE 2 ectoine biosynthesis pathway of the model organism Chromohalobacter TITLE 3 salexigens DSM 3034 COMPND MOL_ID: 1; COMPND 2 MOLECULE: Diaminobutyrate--2-oxoglutarate transaminase; COMPND 3 CHAIN: A, B, C, D, E, F, G, H; COMPND 4 EC: 2.6.1.76; COMPND 5 ENGINEERED: YES; COMPND 6 Synthetic construct containing a 6xHIS C-terminal purification tag; COMPND 7 MOL_ID: 1; COMPND 8 Diaminobutyrate--2-oxoglutarate transaminase; COMPND 9 CHAIN: A, B, C, D, E, F, G, H; COMPND 10 EC: 2.6.1.76; COMPND 11 ENGINEERED: YES; COMPND 12 Synthetic construct containing a 6xHIS C-terminal purification tag; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.45 ANGSTORMS DBREF 6RL5 C 1 423 UNP Q9ZEU7 ECTB_CHRSD 1 423 DBREF 6RL5 D 1 423 UNP Q9ZEU7 ECTB_CHRSD 1 423 SEQRES 1 C 302 THR GLN ILE LEU GLU ARG MET GLU SER GLU VAL ARG THR SEQRES 2 C 302 TYR SER ARG SER PHE PRO THR VAL PHE THR GLU ALA LYS SEQRES 3 C 302 GLY ALA ARG LEU HIS ALA GLU ASP GLY ASN GLN TYR ILE SEQRES 4 C 302 ASP PHE LEU ALA GLY ALA GLY THR LEU ASN TYR GLY HIS SEQRES 5 C 302 ASN HIS PRO LYS LEU LYS GLN ALA LEU ALA ASP TYR ILE SEQRES 6 C 302 ALA SER ASP GLY ILE VAL HIS GLY LEU ASP MET TRP SER SEQRES 7 C 302 ALA ALA LYS ARG ASP TYR LEU GLU THR LEU GLU GLU VAL SEQRES 8 C 302 ILE LEU LYS PRO ARG GLY LEU ASP TYR LYS VAL HIS LEU SEQRES 9 C 302 PRO GLY PRO THR GLY THR ASN ALA VAL GLU ALA ALA ILE SEQRES 10 C 302 ARG LEU ALA ARG ASN ALA LYS GLY ARG HIS ASN ILE VAL SEQRES 11 C 302 THR PHE THR ASN GLY PHE HIS GLY VAL THR MET GLY ALA SEQRES 12 C 302 LEU ALA THR THR GLY ASN ARG LYS PHE ARG GLU ALA THR SEQRES 13 C 302 GLY GLY ILE PRO THR GLN GLY ALA SER PHE MET PRO PHE SEQRES 14 C 302 ASP GLY TYR MET GLY GLU GLY VAL ASP THR LEU SER TYR SEQRES 15 C 302 PHE GLU LYS LEU LEU GLY ASP ASN SER GLY GLY LEU ASP SEQRES 16 C 302 VAL PRO ALA ALA VAL ILE ILE GLU THR VAL GLN GLY GLU SEQRES 17 C 302 GLY GLY ILE ASN PRO ALA GLY ILE PRO TRP LEU GLN ARG SEQRES 18 C 302 LEU GLU LYS ILE CYS ARG ASP HIS ASP MET LEU LEU ILE SEQRES 19 C 302 VAL ASP ASP ILE GLN ALA GLY CYS GLY ARG THR GLY LYS SEQRES 20 C 302 PHE PHE SER PHE GLU HIS ALA GLY ILE THR PRO ASP ILE SEQRES 21 C 302 VAL THR ASN SER LYS SER LEU SER GLY PHE GLY LEU PRO SEQRES 22 C 302 PHE ALA HIS VAL LEU MET ARG PRO GLU LEU ASP ILE TRP SEQRES 23 C 302 LYS PRO GLY GLN TYR ASN GLY THR PHE ARG GLY PHE ASN SEQRES 24 C 302 LEU ALA PHE SEQRES 1 C 14 ARG LYS GLY ARG VAL VAL GLU ASP ARG PHE GLN LYS LEU SEQRES 2 C 14 ALA ATOM 1 N ARG C 326 -75.682 -41.479 -4.286 1.00 70.67 ATOM 2 CA ARG C 326 -75.975 -42.894 -4.467 1.00 68.52 ATOM 3 C ARG C 326 -75.319 -43.432 -5.739 1.00 69.65 ATOM 4 O ARG C 326 -74.634 -44.466 -5.713 1.00 64.58 ATOM 5 CB ARG C 326 -77.493 -43.098 -4.494 1.00 68.44 ATOM 6 CG ARG C 326 -77.957 -44.532 -4.501 1.00 54.63 ATOM 7 CD ARG C 326 -79.413 -44.627 -4.917 1.00 68.59 ATOM 8 NE ARG C 326 -79.565 -44.894 -6.348 1.00 76.70 ATOM 9 CZ ARG C 326 -80.301 -44.143 -7.157 1.00 78.76 ATOM 10 NH1 ARG C 326 -80.954 -43.108 -6.650 1.00 81.56 ATOM 11 NH2 ARG C 326 -80.407 -44.430 -8.448 1.00 74.40 ATOM 12 N LYS C 327 -75.507 -42.737 -6.872 1.00 67.10 ATOM 13 CA LYS C 327 -74.939 -43.241 -8.124 1.00 64.79 ATOM 14 C LYS C 327 -73.411 -43.183 -8.121 1.00 58.80 ATOM 15 O LYS C 327 -72.763 -44.020 -8.751 1.00 58.39 ATOM 16 CB LYS C 327 -75.501 -42.478 -9.318 1.00 64.14 ATOM 17 CG LYS C 327 -76.980 -42.638 -9.562 1.00 62.59 ATOM 18 CD LYS C 327 -77.437 -41.563 -10.524 1.00 61.87 ATOM 19 CE LYS C 327 -78.864 -41.092 -10.253 1.00 66.94 ATOM 20 NZ LYS C 327 -79.321 -40.055 -11.239 1.00 60.50 ATOM 21 N GLY C 328 -72.818 -42.226 -7.410 1.00 57.68 ATOM 22 CA GLY C 328 -71.380 -42.254 -7.204 1.00 62.45 ATOM 23 C GLY C 328 -70.863 -43.560 -6.615 1.00 69.41 ATOM 24 O GLY C 328 -69.739 -43.986 -6.916 1.00 62.22 ATOM 25 N ARG C 329 -71.658 -44.215 -5.767 1.00 67.26 ATOM 26 CA ARG C 329 -71.173 -45.448 -5.168 1.00 66.47 ATOM 27 C ARG C 329 -71.316 -46.634 -6.110 1.00 66.43 ATOM 28 O ARG C 329 -70.471 -47.540 -6.086 1.00 67.11 ATOM 29 CB ARG C 329 -71.899 -45.720 -3.858 1.00 69.19 ATOM 30 CG ARG C 329 -71.595 -44.718 -2.780 1.00 71.31 ATOM 31 CD ARG C 329 -72.077 -45.287 -1.468 1.00 78.64 ATOM 32 NE ARG C 329 -73.531 -45.479 -1.505 1.00 75.66 ATOM 33 CZ ARG C 329 -74.395 -44.607 -0.989 1.00 81.00 ATOM 34 NH1 ARG C 329 -73.928 -43.512 -0.401 1.00 74.55 ATOM 35 NH2 ARG C 329 -75.713 -44.828 -1.048 1.00 74.43 ATOM 36 N VAL C 330 -72.363 -46.663 -6.943 1.00 68.41 ATOM 37 CA VAL C 330 -72.450 -47.745 -7.920 1.00 65.87 ATOM 38 C VAL C 330 -71.364 -47.583 -8.980 1.00 66.83 ATOM 39 O VAL C 330 -70.740 -48.568 -9.407 1.00 68.35 ATOM 40 CB VAL C 330 -73.867 -47.846 -8.525 1.00 56.18 ATOM 41 CG1 VAL C 330 -74.363 -46.541 -8.981 1.00 59.88 ATOM 42 CG2 VAL C 330 -73.874 -48.805 -9.698 1.00 67.10 ATOM 43 N VAL C 331 -71.073 -46.341 -9.382 1.00 63.43 ATOM 44 CA VAL C 331 -69.899 -46.121 -10.225 1.00 64.33 ATOM 45 C VAL C 331 -68.633 -46.517 -9.475 1.00 62.74 ATOM 46 O VAL C 331 -67.795 -47.266 -9.994 1.00 63.23 ATOM 47 CB VAL C 331 -69.824 -44.662 -10.713 1.00 63.52 ATOM 48 CG1 VAL C 331 -68.603 -44.486 -11.624 1.00 58.00 ATOM 49 CG2 VAL C 331 -71.100 -44.261 -11.431 1.00 59.27 ATOM 50 N GLU C 332 -68.471 -46.010 -8.244 1.00 60.77 ATOM 51 CA GLU C 332 -67.286 -46.328 -7.455 1.00 62.13 ATOM 52 C GLU C 332 -67.084 -47.828 -7.355 1.00 66.56 ATOM 53 O GLU C 332 -65.976 -48.335 -7.567 1.00 61.86 ATOM 54 CB GLU C 332 -67.398 -45.733 -6.055 1.00 67.89 ATOM 55 CG GLU C 332 -66.289 -46.206 -5.124 1.00 65.95 ATOM 56 CD GLU C 332 -66.462 -45.694 -3.718 1.00 71.83 ATOM 57 OE1 GLU C 332 -67.575 -45.200 -3.398 1.00 70.90 ATOM 58 OE2 GLU C 332 -65.486 -45.796 -2.941 1.00 75.97 ATOM 59 N ASP C 333 -68.163 -48.552 -7.056 1.00 67.12 ATOM 60 CA ASP C 333 -68.086 -49.994 -6.882 1.00 66.82 ATOM 61 C ASP C 333 -67.539 -50.672 -8.132 1.00 63.07 ATOM 62 O ASP C 333 -66.536 -51.388 -8.070 1.00 65.99 ATOM 63 CB ASP C 333 -69.466 -50.541 -6.521 1.00 73.43 ATOM 64 CG ASP C 333 -69.410 -51.971 -6.014 1.00 81.92 ATOM 65 OD1 ASP C 333 -69.034 -52.165 -4.833 1.00 90.12 ATOM 66 OD2 ASP C 333 -69.742 -52.898 -6.797 1.00 83.61 ATOM 67 N ARG C 334 -68.186 -50.458 -9.284 1.00 61.88 ATOM 68 CA ARG C 334 -67.763 -51.174 -10.485 1.00 59.96 ATOM 69 C ARG C 334 -66.355 -50.786 -10.916 1.00 63.96 ATOM 70 O ARG C 334 -65.623 -51.618 -11.471 1.00 62.18 ATOM 71 CB ARG C 334 -68.735 -50.939 -11.633 1.00 61.40 ATOM 72 CG ARG C 334 -68.506 -51.927 -12.791 1.00 67.81 ATOM 73 CD ARG C 334 -69.345 -53.173 -12.610 1.00 62.66 ATOM 74 NE ARG C 334 -70.755 -52.817 -12.637 1.00 64.54 ATOM 75 CZ ARG C 334 -71.520 -52.907 -13.717 1.00 65.28 ATOM 76 NH1 ARG C 334 -71.017 -53.376 -14.846 1.00 67.39 ATOM 77 NH2 ARG C 334 -72.792 -52.545 -13.661 1.00 70.41 ATOM 78 N PHE C 335 -65.951 -49.541 -10.666 1.00 59.96 ATOM 79 CA PHE C 335 -64.588 -49.157 -11.000 1.00 61.94 ATOM 80 C PHE C 335 -63.575 -49.949 -10.176 1.00 60.98 ATOM 81 O PHE C 335 -62.552 -50.394 -10.715 1.00 70.08 ATOM 82 CB PHE C 335 -64.394 -47.653 -10.814 1.00 59.71 ATOM 83 CG PHE C 335 -64.790 -46.829 -12.013 1.00 50.63 ATOM 84 CD1 PHE C 335 -65.568 -47.368 -13.015 1.00 48.97 ATOM 85 CD2 PHE C 335 -64.384 -45.504 -12.124 1.00 55.75 ATOM 86 CE1 PHE C 335 -65.952 -46.612 -14.111 1.00 49.82 ATOM 87 CE2 PHE C 335 -64.753 -44.738 -13.215 1.00 56.98 ATOM 88 CZ PHE C 335 -65.550 -45.299 -14.212 1.00 58.92 ATOM 89 N GLN C 336 -63.835 -50.142 -8.871 1.00 58.17 ATOM 90 CA GLN C 336 -62.929 -50.966 -8.060 1.00 60.30 ATOM 91 C GLN C 336 -62.936 -52.411 -8.522 1.00 65.30 ATOM 92 O GLN C 336 -61.897 -53.083 -8.475 1.00 73.21 ATOM 93 CB GLN C 336 -63.271 -50.900 -6.561 1.00 61.18 ATOM 94 CG GLN C 336 -63.784 -49.533 -6.085 1.00 72.28 ATOM 95 CD GLN C 336 -64.332 -49.498 -4.647 1.00 75.19 ATOM 96 OE1 GLN C 336 -65.175 -50.320 -4.275 1.00 76.30 ATOM 97 NE2 GLN C 336 -63.928 -48.478 -3.872 1.00 68.39 ATOM 98 N LYS C 337 -64.090 -52.903 -8.967 1.00 57.79 ATOM 99 CA LYS C 337 -64.156 -54.225 -9.569 1.00 61.67 ATOM 100 C LYS C 337 -63.287 -54.298 -10.820 1.00 67.83 ATOM 101 O LYS C 337 -62.482 -55.226 -10.980 1.00 65.08 ATOM 102 CB LYS C 337 -65.609 -54.565 -9.890 1.00 61.68 ATOM 103 CG LYS C 337 -65.814 -55.961 -10.445 1.00 72.98 ATOM 104 CD LYS C 337 -65.955 -55.981 -11.976 1.00 76.23 ATOM 105 CE LYS C 337 -67.035 -56.987 -12.429 1.00 79.55 ATOM 106 NZ LYS C 337 -66.970 -58.316 -11.730 1.00 87.38 ATOM 107 N LEU C 338 -63.439 -53.325 -11.725 1.00 65.75 ATOM 108 CA LEU C 338 -62.625 -53.334 -12.933 1.00 61.53 ATOM 109 C LEU C 338 -61.152 -53.175 -12.587 1.00 67.72 ATOM 110 O LEU C 338 -60.288 -53.822 -13.198 1.00 70.42 ATOM 111 CB LEU C 338 -63.080 -52.236 -13.888 1.00 62.47 ATOM 112 CG LEU C 338 -64.476 -52.243 -14.526 1.00 60.96 ATOM 113 CD1 LEU C 338 -64.435 -51.423 -15.797 1.00 57.32 ATOM 114 CD2 LEU C 338 -64.988 -53.635 -14.827 1.00 63.65 ATOM 115 N ALA C 339 -60.848 -52.336 -11.586 1.00 67.13 ATOM 116 CA ALA C 339 -59.459 -52.118 -11.183 1.00 67.50 ATOM 117 C ALA C 339 -58.855 -53.367 -10.543 1.00 69.18 ATOM 118 O ALA C 339 -57.697 -53.705 -10.800 1.00 68.45 ATOM 119 CB ALA C 339 -59.368 -50.926 -10.229 1.00 61.18 ATOM 120 N1 PLP C -60.724 -24.296 -14.999 1.00 69.30 ATOM 121 C2 PLP C -61.090 -25.608 -14.709 1.00 75.97 ATOM 122 C2A PLP C -60.968 -26.188 -13.328 1.00 72.15 ATOM 123 C3 PLP C -61.599 -26.451 -15.699 1.00 79.17 ATOM 124 O3 PLP C -61.950 -27.743 -15.371 1.00 74.57 ATOM 125 C4 PLP C -61.746 -25.982 -17.002 1.00 80.26 ATOM 126 C4A PLP C -62.617 -26.771 -17.951 1.00 77.81 ATOM 127 C5 PLP C -61.382 -24.654 -17.296 1.00 79.10 ATOM 128 C6 PLP C -60.868 -23.812 -16.290 1.00 68.28 ATOM 129 C5A PLP C -61.524 -24.162 -18.731 1.00 80.64 ATOM 130 O4P PLP C -62.594 -23.262 -18.910 1.00 84.07 ATOM 131 P PLP C -63.276 -23.077 -20.362 1.00 95.73 ATOM 132 O1P PLP C -62.690 -24.131 -21.282 1.00 86.08 ATOM 133 O2P PLP C -64.790 -23.226 -20.185 1.00 83.87 ATOM 134 O3P PLP C -62.922 -21.703 -20.917 1.00 86.57 ATOM 135 N1 PLP C -61.824 -7.128 -30.453 1.00 68.03 ATOM 136 C2 PLP C -62.538 -6.000 -30.808 1.00 65.17 ATOM 137 C2A PLP C -62.174 -5.292 -32.073 1.00 62.75 ATOM 138 C3 PLP C -63.576 -5.532 -29.989 1.00 74.31 ATOM 139 O3 PLP C -64.304 -4.406 -30.340 1.00 73.33 ATOM 140 C4 PLP C -63.899 -6.226 -28.814 1.00 69.87 ATOM 141 C4A PLP C -65.331 -6.097 -28.377 1.00 73.14 ATOM 142 C5 PLP C -63.161 -7.381 -28.465 1.00 70.81 ATOM 143 C6 PLP C -62.128 -7.817 -29.292 1.00 68.42 ATOM 144 C5A PLP C -63.427 -8.185 -27.201 1.00 73.26 ATOM 145 O4P PLP C -64.254 -9.319 -27.423 1.00 81.54 ATOM 146 P PLP C -65.058 -9.989 -26.179 1.00 87.79 ATOM 147 O1P PLP C -66.190 -10.889 -26.662 1.00 77.09 ATOM 148 O2P PLP C -64.136 -10.766 -25.259 1.00 81.41 ATOM 149 O3P PLP C -65.583 -8.819 -25.380 1.00 86.01 TER