HEADER LIGASE 10-SEP-02 1IYW TITLE Preliminary Structure of Thermus thermophilus Ligand-Free Valyl-tRNA TITLE 2 Synthetase COMPND MOL_ID: 1; COMPND 2 MOLECULE: Valyl-tRNA Synthetase; COMPND 3 CHAIN: A, B; COMPND 4 EC: 6.1.1.9; COMPND 5 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 4.00 ANGSTORMS DBREF 1IYW A 1 862 UNP P96142 SYV_THETH 1 862 SEQRES 1 A 85 ARG ASP GLU GLU ALA GLU ARG ALA PHE GLU ALA LEU LYS SEQRES 2 A 85 GLN ALA VAL THR ALA VAL ARG ALA LEU LYS ALA GLU ALA SEQRES 3 A 85 GLY LEU PRO PRO ALA GLN GLU VAL ARG VAL TYR LEU GLU SEQRES 4 A 85 GLY GLU THR ALA PRO VAL GLU GLU ASN LEU GLU VAL PHE SEQRES 5 A 85 ARG PHE LEU SER ARG ALA ASP LEU LEU PRO GLU ARG PRO SEQRES 6 A 85 ALA LYS ALA LEU VAL LYS ALA MET PRO ARG VAL THR ALA SEQRES 7 A 85 ARG MET PRO LEU GLU GLY LEU ATOM 1 CA ARG A 711 8.264 -3.980 11.182 1.00 59.17 ATOM 2 CA ASP A 712 10.133 -6.205 13.650 1.00 60.30 ATOM 3 CA GLU A 713 10.096 -5.095 17.288 1.00 55.78 ATOM 4 CA GLU A 714 12.441 -7.939 18.302 1.00 57.20 ATOM 5 CA ALA A 715 14.827 -8.021 15.372 1.00 40.43 ATOM 6 CA GLU A 716 15.214 -4.299 15.888 1.00 42.18 ATOM 7 CA ARG A 717 15.235 -4.991 19.624 1.00 42.12 ATOM 8 CA ALA A 718 18.199 -7.254 18.914 1.00 30.45 ATOM 9 CA PHE A 719 20.459 -5.130 16.747 1.00 25.23 ATOM 10 CA GLU A 720 20.591 -2.205 19.150 1.00 44.24 ATOM 11 CA ALA A 721 21.965 -4.642 21.741 1.00 43.24 ATOM 12 CA LEU A 722 24.938 -4.600 19.404 1.00 25.29 ATOM 13 CA LYS A 723 24.970 -0.800 19.373 1.00 49.55 ATOM 14 CA GLN A 724 24.816 -0.424 23.148 1.00 50.96 ATOM 15 CA ALA A 725 27.733 -2.854 23.079 1.00 24.63 ATOM 16 CA VAL A 726 29.450 -1.339 20.079 1.00 12.26 ATOM 17 CA THR A 727 29.239 2.221 21.400 1.00 20.97 ATOM 18 CA ALA A 728 29.887 1.245 25.035 1.00 10.00 ATOM 19 CA VAL A 729 33.207 -0.129 23.844 1.00 17.62 ATOM 20 CA ARG A 730 34.028 2.869 21.617 1.00 32.47 ATOM 21 CA ALA A 731 33.091 4.914 24.620 1.00 33.95 ATOM 22 CA LEU A 732 35.348 3.175 27.137 1.00 40.15 ATOM 23 CA LYS A 733 38.121 3.945 24.650 1.00 46.69 ATOM 24 CA ALA A 734 37.757 7.749 24.551 1.00 49.90 ATOM 25 CA GLU A 735 37.894 7.583 28.379 1.00 59.53 ATOM 26 CA ALA A 736 41.099 5.592 28.194 1.00 33.74 ATOM 27 CA GLY A 737 42.859 7.614 25.531 1.00 28.93 ATOM 28 CA LEU A 738 43.289 4.570 23.276 1.00 41.96 ATOM 29 CA PRO A 739 43.680 4.994 19.501 1.00 35.27 ATOM 30 CA PRO A 740 40.641 4.419 17.195 1.00 38.16 ATOM 31 CA ALA A 741 41.504 1.471 14.922 1.00 42.24 ATOM 32 CA GLN A 742 43.118 -0.437 17.822 1.00 41.25 ATOM 33 CA GLU A 743 42.456 -4.016 18.945 1.00 21.95 ATOM 34 CA VAL A 744 40.914 -4.589 22.337 1.00 19.88 ATOM 35 CA ARG A 745 39.826 -7.601 24.422 1.00 19.18 ATOM 36 CA VAL A 746 36.375 -6.907 25.809 1.00 24.44 ATOM 37 CA TYR A 747 33.709 -8.252 28.135 1.00 35.92 ATOM 38 CA LEU A 748 30.009 -7.852 27.539 1.00 42.32 ATOM 39 CA GLU A 749 27.105 -8.485 29.907 1.00 44.43 ATOM 40 CA GLY A 750 23.326 -8.726 29.503 1.00 47.39 ATOM 41 CA GLU A 751 21.498 -9.026 26.209 1.00 50.07 ATOM 42 CA THR A 752 24.898 -9.820 24.696 1.00 44.80 ATOM 43 CA ALA A 753 23.475 -12.526 22.421 1.00 44.03 ATOM 44 CA PRO A 754 23.396 -10.335 19.259 1.00 31.53 ATOM 45 CA VAL A 755 27.066 -9.537 19.792 1.00 19.57 ATOM 46 CA GLU A 756 27.712 -13.303 19.803 1.00 28.13 ATOM 47 CA GLU A 757 25.744 -14.534 16.810 1.00 23.98 ATOM 48 CA ASN A 758 27.387 -11.650 14.956 1.00 10.00 ATOM 49 CA LEU A 759 30.952 -11.683 16.263 1.00 10.00 ATOM 50 CA GLU A 760 32.387 -11.027 12.808 1.00 14.67 ATOM 51 CA VAL A 761 31.060 -7.500 12.691 1.00 16.48 ATOM 52 CA PHE A 762 31.015 -6.830 16.420 1.00 10.00 ATOM 53 CA ARG A 763 34.741 -6.971 15.897 1.00 29.38 ATOM 54 CA PHE A 764 34.641 -4.975 12.664 1.00 22.56 ATOM 55 CA LEU A 765 32.855 -2.085 14.190 1.00 13.79 ATOM 56 CA SER A 766 34.276 -1.935 17.721 1.00 12.23 ATOM 57 CA ARG A 767 37.630 -3.035 16.302 1.00 10.00 ATOM 58 CA ALA A 768 37.607 -5.162 19.461 1.00 35.56 ATOM 59 CA ASP A 769 37.319 -8.918 20.016 1.00 47.72 ATOM 60 CA LEU A 770 35.754 -10.715 22.961 1.00 33.62 ATOM 61 CA LEU A 771 37.141 -12.466 26.057 1.00 56.66 ATOM 62 CA PRO A 772 35.597 -15.747 27.348 1.00 67.61 ATOM 63 CA GLU A 773 35.660 -15.130 31.080 1.00 66.44 ATOM 64 CA ARG A 774 34.794 -11.932 32.939 1.00 63.42 ATOM 65 CA PRO A 775 37.807 -9.982 34.113 1.00 62.66 ATOM 66 CA ALA A 776 37.322 -8.728 37.675 1.00 68.26 ATOM 67 CA LYS A 777 39.819 -5.986 36.860 1.00 61.17 ATOM 68 CA ALA A 778 38.779 -3.605 34.027 1.00 63.37 ATOM 69 CA LEU A 779 37.146 -0.238 33.200 1.00 48.37 ATOM 70 CA VAL A 780 33.376 0.239 33.301 1.00 40.44 ATOM 71 CA LYS A 781 30.731 1.610 30.916 1.00 34.04 ATOM 72 CA ALA A 782 27.370 -0.031 31.478 1.00 20.94 ATOM 73 CA MET A 783 24.419 0.839 29.240 1.00 19.26 ATOM 74 CA PRO A 784 20.660 0.708 29.775 1.00 21.14 ATOM 75 CA ARG A 785 20.612 -2.872 28.499 1.00 34.22 ATOM 76 CA VAL A 786 24.287 -3.862 28.408 1.00 34.67 ATOM 77 CA THR A 787 27.755 -3.189 29.865 1.00 39.19 ATOM 78 CA ALA A 788 31.318 -3.713 28.692 1.00 42.20 ATOM 79 CA ARG A 789 34.115 -4.216 31.162 1.00 40.19 ATOM 80 CA MET A 790 37.334 -3.652 29.187 1.00 34.73 ATOM 81 CA PRO A 791 40.509 -5.177 30.707 1.00 43.13 ATOM 82 CA LEU A 792 43.402 -2.862 31.564 1.00 45.49 ATOM 83 CA GLU A 793 45.394 -5.012 29.098 1.00 60.98 ATOM 84 CA GLY A 794 49.590 -4.940 23.621 1.00 75.81 ATOM 85 CA LEU A 795 51.389 -2.977 26.379 1.00 75.77 TER