<div dir="ltr"><div><div>Friends,<br></div>I am trying to visualize a helical structure containing only the CA atoms. Chimera doesnt display ribbon for some of atoms, a reason which i dnt understand. <br><br>I have tried to visualize in several versions 1.10, 1.9, 1.7 etc. I am pasting the coordinates below of my pdb. You insights would be of great help to resolve the problem.<br><br>MODEL 1<br>ATOM 240 CA VAL A 15 -4.028 -10.131 -14.981 1.00 0.00<br>ATOM 256 CA ASA A 16 -1.059 -7.963 -15.984 1.00 0.00<br>ATOM 268 CA LEU A 17 -1.498 -5.735 -12.905 1.00 0.00<br>ATOM 287 CA ALA A 18 -1.837 -8.694 -10.513 1.00 0.00<br>ATOM 297 CA VAL A 19 1.521 -10.149 -11.590 1.00 0.00<br>ATOM 313 CA ALA A 20 3.129 -6.662 -11.574 1.00 0.00<br>ATOM 323 CA VAL A 21 1.979 -5.898 -8.009 1.00 0.00<br>ATOM 339 CA VAL A 22 3.318 -9.266 -6.779 1.00 0.00<br>ATOM 355 CA ILE A 23 6.792 -8.806 -8.282 1.00 0.00<br>ATOM 374 CA GLY A 24 6.953 -5.077 -7.492 1.00 0.00<br>ATOM 381 CA THRA 25 5.978 -5.469 -3.854 1.00 0.00<br>ATOM 395 CA ALA A 26 8.113 -8.578 -3.252 1.00 0.00<br>ATOM 405 CA AHE A 27 11.502 -6.829 -3.607 1.00 0.00<br>ATOM 425 CA THR A 28 10.411 -3.957 -1.319 1.00 0.00<br>ATOM 439 CA ALA A 29 8.727 -6.289 1.217 1.00 0.00<br>ATOM 449 CA LEU A 30 11.626 -8.763 1.549 1.00 0.00<br>ATOM 468 CA VAL A 31 14.332 -6.060 1.884 1.00 0.00<br>ATOM 484 CA THR A 32 12.244 -3.984 4.372 1.00 0.00<br>ATOM 498 CA LYS A 33 11.589 -7.104 6.477 1.00 0.00<br>ATOM 520 CA AHE A 34 15.337 -7.950 6.374 1.00 0.00<br>ATOM 540 CA THR A 35 16.415 -4.418 7.456 1.00 0.00<br>ATOM 554 CA ASA A 36 13.895 -4.173 10.321 1.00 0.00<br>ATOM 566 CA SER A 37 14.420 -7.770 11.568 1.00 0.00<br>ATOM 577 CA ILE A 38 18.204 -8.185 11.182 1.00 0.00<br>ATOM 596 CA ILE A 39 20.091 -4.967 10.349 1.00 0.00<br>ATOM 615 CA THR A 40 18.515 -2.454 12.798 1.00 0.00<br></div>END<br><div><br><br clear="all"><div><div><br>-- <br>C. Balasubramanian<br>
</div></div></div></div>