HEADER TRANSFERASE 25-OCT-07 3B5B TITLE Crystal structure of the thymidylate synthase k48q COMPND MOL_ID: 1; COMPND 2 MOLECULE: Thymidylate synthase; COMPND 3 CHAIN: A, B; COMPND 4 MUTATION: YES; COMPND 5 EC: 2.1.1.45; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 1; COMPND 8 Thymidylate synthase; COMPND 9 CHAIN: A, B; COMPND 10 MUTATION: YES; COMPND 11 EC: 2.1.1.45; COMPND 12 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 2.70 ANGSTORMS DBREF 3B5B A 1 264 UNP P0A884 TYSY_ECOLI 1 264 DBREF 3B5B B 1 264 UNP P0A884 TYSY_ECOLI 1 264 SEQRES 1 A 264 MET LYS GLN TYR LEU GLU LEU MET GLN LYS VAL LEU ASP SEQRES 2 A 264 GLU GLY THR GLN LYS ASN ASP ARG THR GLY THR GLY THR SEQRES 3 A 264 LEU SER ILE PHE GLY HIS GLN MET ARG PHE ASN LEU GLN SEQRES 4 A 264 ASP GLY PHE PRO LEU VAL THR THR GLN ARG CYS HIS LEU SEQRES 5 A 264 ARG SER ILE ILE HIS GLU LEU LEU TRP PHE LEU GLN GLY SEQRES 6 A 264 ASP THR ASN ILE ALA TYR LEU HIS GLU ASN ASN VAL THR SEQRES 7 A 264 ILE TRP ASP GLU TRP ALA ASP GLU ASN GLY ASP LEU GLY SEQRES 8 A 264 PRO VAL TYR GLY LYS GLN TRP ARG ALA TRP PRO THR PRO SEQRES 9 A 264 ASP GLY ARG HIS ILE ASP GLN ILE THR THR VAL LEU ASN SEQRES 10 A 264 GLN LEU LYS ASN ASP PRO ASP SER ARG ARG ILE ILE VAL SEQRES 11 A 264 SER ALA TRP ASN VAL GLY GLU LEU ASP LYS MET ALA LEU SEQRES 12 A 264 ALA PRO CYS HIS ALA PHE PHE GLN PHE TYR VAL ALA ASP SEQRES 13 A 264 GLY LYS LEU SER CYS GLN LEU TYR GLN ARG SER CYS ASP SEQRES 14 A 264 VAL PHE LEU GLY LEU PRO PHE ASN ILE ALA SER TYR ALA SEQRES 15 A 264 LEU LEU VAL HIS MET MET ALA GLN GLN CYS ASP LEU GLU SEQRES 16 A 264 VAL GLY ASP PHE VAL TRP THR GLY GLY ASP THR HIS LEU SEQRES 17 A 264 TYR SER ASN HIS MET ASP GLN THR HIS LEU GLN LEU SER SEQRES 18 A 264 ARG GLU PRO ARG PRO LEU PRO LYS LEU ILE ILE LYS ARG SEQRES 19 A 264 LYS PRO GLU SER ILE PHE ASP TYR ARG PHE GLU ASP PHE SEQRES 20 A 264 GLU ILE GLU GLY TYR ASP PRO HIS PRO GLY ILE LYS ALA SEQRES 21 A 264 PRO VAL ALA ILE ATOM 1 P NDU A 15.255 24.184 26.579 1.00 26.18 ATOM 2 OP1 NDU A 14.042 24.972 26.194 1.00 27.28 ATOM 3 OP2 NDU A 16.218 24.931 27.477 1.00 27.47 ATOM 4 OP3 NDU A 15.880 23.583 25.376 1.00 26.73 ATOM 5 O5' NDU A 14.702 22.958 27.441 1.00 24.54 ATOM 6 C5' NDU A 15.316 21.999 28.236 1.00 23.58 ATOM 7 C4' NDU A 14.901 22.128 29.661 1.00 23.55 ATOM 8 C3' NDU A 15.276 23.312 30.541 1.00 24.45 ATOM 9 O3' NDU A 14.301 23.556 31.549 1.00 22.87 ATOM 10 C2' NDU A 16.637 22.919 31.141 1.00 22.28 ATOM 11 C1' NDU A 16.371 21.403 31.357 1.00 24.28 ATOM 12 O4' NDU A 15.403 21.026 30.377 1.00 23.33 ATOM 13 N1 NDU A 17.636 20.633 31.527 1.00 25.12 ATOM 14 C2 NDU A 18.369 20.421 32.719 1.00 25.66 ATOM 15 O2 NDU A 18.192 21.029 33.705 1.00 27.61 ATOM 16 N3 NDU A 19.332 19.442 32.738 1.00 26.88 ATOM 17 C4 NDU A 19.528 18.427 31.790 1.00 26.89 ATOM 18 O4 NDU A 20.356 17.576 31.911 1.00 27.05 ATOM 19 C5 NDU A 18.610 18.457 30.517 1.00 25.88 ATOM 20 C6 NDU A 17.860 19.786 30.203 1.00 24.31 ATOM 21 N5 NDU A 18.497 17.498 29.607 1.00 29.36 ATOM 22 O51 NDU A 18.929 16.346 29.841 1.00 29.51 ATOM 23 O52 NDU A 17.973 17.636 28.483 1.00 30.37 TER ATOM 1 P NDN B 46.433 28.257 24.564 1.00 28.24 ATOM 2 OP1 NDN B 47.700 27.548 24.968 1.00 27.85 ATOM 3 OP2 NDN B 45.494 28.422 25.721 1.00 27.77 ATOM 4 OP3 NDN B 45.849 27.841 23.248 1.00 28.12 ATOM 5 OR5 NDN B 46.936 29.734 24.272 1.00 29.76 ATOM 6 CR5 NDN B 46.361 30.943 23.895 1.00 30.87 ATOM 7 CR4 NDN B 46.859 32.042 24.811 1.00 30.40 ATOM 8 CR3 NDN B 46.554 32.079 26.296 1.00 29.72 ATOM 9 OR3 NDN B 47.488 32.815 27.038 1.00 29.83 ATOM 10 CR2 NDN B 45.163 32.742 26.356 1.00 28.94 ATOM 11 CR1 NDN B 45.360 33.822 25.239 1.00 28.54 ATOM 12 OR1 NDN B 46.374 33.303 24.361 1.00 29.92 ATOM 13 N1 NDN B 44.024 34.350 24.714 1.00 28.53 ATOM 14 C2 NDN B 43.216 35.326 25.294 1.00 27.34 ATOM 15 O2 NDN B 43.416 35.695 26.380 1.00 29.68 ATOM 16 N3 NDN B 42.162 35.840 24.534 1.00 27.13 ATOM 17 C4 NDN B 42.097 35.908 23.145 1.00 28.12 ATOM 18 O4 NDN B 41.389 36.685 22.533 1.00 27.44 ATOM 19 C5 NDN B 43.004 34.921 22.371 1.00 28.69 ATOM 20 C6 NDN B 44.138 34.276 23.195 1.00 28.45 ATOM 21 N5 NDN B 43.089 34.783 21.069 1.00 31.19 ATOM 22 O51 NDN B 42.206 35.225 20.299 1.00 33.50 ATOM 23 O52 NDN B 44.027 34.233 20.465 1.00 31.79 TER