HEADER RIBOSOME 13-JUN-03 1PNU TITLE Crystal Structure of a Streptomycin Dependent Ribosome from TITLE 2 Escherichia Coli, 50S Subunit of 70S Ribosome. THIS FILE, 1PNU, TITLE 3 CONTAINS ONLY MOLECULES OF THE 50S RIBOSOMAL SUBUNIT. THE 30S TITLE 4 SUBUNIT, MRNA, P-SITE TRNA, AND A-SITE TRNA ARE IN THE PDB FILE 1PNS. COMPND MOL_ID: 18; COMPND 2 MOLECULE: 50S ribosomal protein L21; COMPND 3 CHAIN: P; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 8.70 ANGSTORMS DBREF 1PNU P 1 100 PDB 1PNU 1PNU 1 100 SEQRES 1 P 100 MET PHE ALA ILE ILE GLN THR GLY GLY LYS GLN TYR ARG SEQRES 2 P 100 VAL SER GLU GLY ASP VAL ILE ARG VAL GLU SER LEU GLN SEQRES 3 P 100 GLY GLU ALA GLY ASP LYS VAL GLU LEU LYS ALA LEU PHE SEQRES 4 P 100 VAL GLY GLY GLU GLN THR VAL PHE GLY GLU ASP ALA GLY SEQRES 5 P 100 LYS TYR THR VAL GLN ALA GLU VAL VAL GLU HIS GLY ARG SEQRES 6 P 100 GLY LYS LYS ILE TYR ILE ARG LYS TYR LYS SER GLY VAL SEQRES 7 P 100 GLN TYR ARG ARG ARG THR GLY HIS ARG GLN ASN PHE THR SEQRES 8 P 100 ALA ILE LYS ILE LEU GLY ILE GLN GLY ATOM 1 CA MET P 1 234.688 88.071 54.816 1.00737.35 ATOM 2 CA PHE P 2 231.042 87.690 55.833 1.00737.35 ATOM 3 CA ALA P 3 228.891 86.942 52.787 1.00737.35 ATOM 4 CA ILE P 4 225.685 85.109 51.878 1.00737.35 ATOM 5 CA ILE P 5 226.498 81.542 50.849 1.00737.35 ATOM 6 CA GLN P 6 224.495 78.719 49.273 1.00737.35 ATOM 7 CA THR P 7 224.809 75.081 50.347 1.00737.35 ATOM 8 CA GLY P 8 222.099 72.432 50.127 1.00737.35 ATOM 9 CA GLY P 9 218.803 74.003 51.121 1.00737.35 ATOM 10 CA LYS P 10 219.191 77.648 52.112 1.00737.35 ATOM 11 CA GLN P 11 222.284 77.574 54.334 1.00737.35 ATOM 12 CA TYR P 12 223.414 81.190 54.033 1.00737.35 ATOM 13 CA ARG P 13 225.267 83.622 56.295 1.00737.35 ATOM 14 CA VAL P 14 228.754 82.104 56.423 1.00737.35 ATOM 15 CA SER P 15 231.681 84.166 57.692 1.00737.35 ATOM 16 CA GLU P 16 234.327 81.800 59.077 1.00737.35 ATOM 17 CA GLY P 17 232.488 79.480 61.440 1.00737.35 ATOM 18 CA ASP P 18 231.290 75.942 60.738 1.00737.35 ATOM 19 CA VAL P 19 228.182 75.759 58.548 1.00737.35 ATOM 20 CA ILE P 20 226.531 72.337 58.281 1.00737.35 ATOM 21 CA ARG P 21 224.471 71.782 55.131 1.00737.35 ATOM 22 CA VAL P 22 223.121 68.414 53.987 1.00737.35 ATOM 23 CA GLU P 23 225.484 65.458 53.602 1.00737.35 ATOM 24 CA SER P 24 228.385 65.859 51.174 1.00737.35 ATOM 25 CA LEU P 25 229.026 62.567 49.378 1.00737.35 ATOM 26 CA GLN P 26 230.630 63.700 46.120 1.00737.35 ATOM 27 CA GLY P 27 232.056 66.987 47.361 1.00737.35 ATOM 28 CA GLU P 28 233.368 66.921 50.923 1.00737.35 ATOM 29 CA ALA P 29 234.595 63.334 51.254 1.00737.35 ATOM 30 CA GLY P 30 237.548 63.713 53.607 1.00737.35 ATOM 31 CA ASP P 31 239.234 66.281 55.839 1.00737.35 ATOM 32 CA LYS P 32 240.131 69.358 53.781 1.00737.35 ATOM 33 CA VAL P 33 238.788 68.206 50.414 1.00737.35 ATOM 34 CA GLU P 34 238.014 71.739 49.225 1.00737.35 ATOM 35 CA LEU P 35 234.647 72.771 47.791 1.00737.35 ATOM 36 CA LYS P 36 233.013 75.498 45.712 1.00737.35 ATOM 37 CA ALA P 37 229.477 76.896 45.676 1.00737.35 ATOM 38 CA LEU P 38 227.841 79.730 43.742 1.00737.35 ATOM 39 CA PHE P 39 227.048 82.438 46.293 1.00737.35 ATOM 40 CA VAL P 40 223.690 84.202 45.995 1.00737.35 ATOM 41 CA GLY P 41 224.868 87.376 47.709 1.00737.35 ATOM 42 CA GLY P 42 228.036 89.148 48.780 1.00737.35 ATOM 43 CA GLU P 43 228.440 91.412 51.799 1.00737.35 ATOM 44 CA GLN P 44 232.249 91.333 51.787 1.00737.35 ATOM 45 CA THR P 45 233.480 94.758 52.887 1.00737.35 ATOM 46 CA VAL P 46 229.951 96.085 52.361 1.00737.35 ATOM 47 CA PHE P 47 229.327 95.349 48.682 1.00737.35 ATOM 48 CA GLY P 48 225.747 94.209 48.199 1.00737.35 ATOM 49 CA GLU P 49 226.389 92.676 44.787 1.00737.35 ATOM 50 CA ASP P 50 223.498 90.927 43.043 1.00737.35 ATOM 51 CA ALA P 51 223.422 87.198 42.307 1.00737.35 ATOM 52 CA GLY P 52 224.600 88.060 38.807 1.00737.35 ATOM 53 CA LYS P 53 227.552 90.065 40.093 1.00737.35 ATOM 54 CA TYR P 54 228.819 87.391 42.488 1.00737.35 ATOM 55 CA THR P 55 228.097 84.342 40.332 1.00737.35 ATOM 56 CA VAL P 56 231.630 84.399 38.923 1.00737.35 ATOM 57 CA GLN P 57 233.156 84.964 42.360 1.00737.35 ATOM 58 CA ALA P 58 232.948 81.518 43.954 1.00737.35 ATOM 59 CA GLU P 59 233.434 81.417 47.727 1.00737.35 ATOM 60 CA VAL P 60 236.126 78.958 48.807 1.00737.35 ATOM 61 CA VAL P 61 235.061 76.469 51.475 1.00737.35 ATOM 62 CA GLU P 62 236.936 73.606 53.132 1.00737.35 ATOM 63 CA HIS P 63 235.440 70.198 53.920 1.00737.35 ATOM 64 CA GLY P 64 235.488 70.566 57.691 1.00737.35 ATOM 65 CA ARG P 65 234.658 67.790 60.146 1.00737.35 ATOM 66 CA GLY P 66 231.777 65.403 59.538 1.00737.35 ATOM 67 CA LYS P 67 229.066 65.730 62.173 1.00737.35 ATOM 68 CA LYS P 68 227.197 62.804 63.715 1.00737.35 ATOM 69 CA ILE P 69 223.445 63.265 64.121 1.00737.35 ATOM 70 CA TYR P 70 220.947 65.427 66.001 1.00737.35 ATOM 71 CA ILE P 71 219.274 64.040 69.118 1.00737.35 ATOM 72 CA ARG P 72 215.572 64.467 68.384 1.00737.35 ATOM 73 CA LYS P 73 213.270 61.469 68.790 1.00737.35 ATOM 74 CA TYR P 74 209.951 62.351 67.143 1.00737.35 ATOM 75 CA LYS P 75 206.644 60.650 67.946 1.00737.35 ATOM 76 CA SER P 76 202.951 60.590 67.042 1.00737.35 ATOM 77 CA GLY P 77 199.710 59.542 68.712 1.00737.35 ATOM 78 CA VAL P 78 196.031 59.146 67.849 1.00737.35 ATOM 79 CA GLN P 79 192.618 58.405 69.347 1.00737.35 ATOM 80 CA TYR P 80 192.374 55.114 67.446 1.00737.35 ATOM 81 CA ARG P 81 194.717 53.175 69.734 1.00737.35 ATOM 82 CA ARG P 82 197.566 54.254 67.459 1.00737.35 ATOM 83 CA ARG P 83 201.121 54.906 68.654 1.00737.35 ATOM 84 CA THR P 84 204.253 55.831 66.702 1.00737.35 ATOM 85 CA GLY P 85 207.837 56.827 67.411 1.00737.35 ATOM 86 CA HIS P 86 210.832 57.111 65.090 1.00737.35 ATOM 87 CA ARG P 87 214.283 58.621 65.604 1.00737.35 ATOM 88 CA GLN P 88 215.938 61.268 63.433 1.00737.35 ATOM 89 CA ASN P 89 219.241 60.455 61.732 1.00737.35 ATOM 90 CA PHE P 90 220.321 63.698 60.062 1.00737.35 ATOM 91 CA THR P 91 223.872 62.545 59.324 1.00737.35 ATOM 92 CA ALA P 92 224.830 66.089 58.346 1.00737.35 ATOM 93 CA ILE P 93 228.381 67.252 57.624 1.00737.35 ATOM 94 CA LYS P 94 229.908 70.527 58.809 1.00737.35 ATOM 95 CA ILE P 95 232.259 72.692 56.750 1.00737.35 ATOM 96 CA LEU P 96 234.246 75.932 56.776 1.00737.35 ATOM 97 CA GLY P 97 233.654 79.117 54.814 1.00737.35 ATOM 98 CA ILE P 98 235.725 81.877 53.229 1.00737.35 ATOM 99 CA GLN P 99 235.670 84.514 50.482 1.00737.35 ATOM 100 CA GLY P 100 237.385 84.595 47.095 1.00737.35 TER