HEADER TOXIN 10-FEB-05 2BK1 TITLE The pore structure of pneumolysin, obtained by fitting the alpha TITLE 2 carbon trace of perfringolysin O into a cryo-EM map COMPND MOL_ID: 1; COMPND 2 MOLECULE: PERFRINGOLYSIN O; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: RESIDUES ; COMPND 5 ENGINEERED: YES; EXPDTA ELECTRON MICROSCOPY DBREF 2BK1 A 53 500 UNP P19995 TACY_CLOPE 53 500 SEQRES 1 A 110 THR GLU TYR SER LYS GLY LYS ILE ASN LEU ASP HIS SER SEQRES 2 A 110 GLY ALA TYR VAL ALA GLN PHE GLU VAL ALA TRP ASP GLU SEQRES 3 A 110 VAL SER TYR ASP LYS GLU GLY ASN GLU VAL LEU THR HIS SEQRES 4 A 110 LYS THR TRP ASP GLY ASN TYR GLN ASP LYS THR ALA HIS SEQRES 5 A 110 TYR SER THR VAL ILE PRO LEU GLU ALA ASN ALA ARG ASN SEQRES 6 A 110 ILE ARG ILE LYS ALA ARG GLU CYS THR GLY LEU ALA TRP SEQRES 7 A 110 GLU TRP TRP ARG ASP VAL ILE SER GLU TYR ASP VAL PRO SEQRES 8 A 110 LEU THR ASN ASN ILE ASN VAL SER ILE TRP GLY THR THR SEQRES 9 A 110 LEU TYR PRO GLY SER SER ATOM 1 CA THR A 387 37.755 158.694 21.749 1.00 40.46 ATOM 2 CA GLU A 388 36.541 155.802 23.859 1.00 35.79 ATOM 3 CA TYR A 389 36.490 152.185 22.690 1.00 36.96 ATOM 4 CA SER A 390 34.966 149.289 24.545 1.00 42.67 ATOM 5 CA LYS A 391 51.793 153.656 19.796 1.00 39.74 ATOM 6 CA GLY A 392 48.784 152.749 17.673 1.00 36.06 ATOM 7 CA LYS A 393 47.817 151.235 14.334 1.00 39.02 ATOM 8 CA ILE A 394 45.329 151.993 11.559 1.00 31.80 ATOM 9 CA ASN A 395 43.365 148.978 10.313 1.00 37.10 ATOM 10 CA LEU A 396 41.890 149.219 6.818 1.00 34.47 ATOM 11 CA ASP A 397 39.224 146.793 5.565 1.00 38.00 ATOM 12 CA HIS A 398 37.781 147.084 2.084 1.00 38.37 ATOM 13 CA SER A 399 34.853 144.760 1.412 1.00 39.17 ATOM 14 CA GLY A 400 33.065 147.065 -1.006 1.00 36.17 ATOM 15 CA ALA A 401 31.875 146.041 -4.455 1.00 33.72 ATOM 16 CA TYR A 402 34.121 148.603 -6.153 1.00 31.59 ATOM 17 CA VAL A 403 37.705 149.728 -6.704 1.00 31.83 ATOM 18 CA ALA A 404 38.936 152.224 -4.130 1.00 29.84 ATOM 19 CA GLN A 405 42.035 154.232 -3.334 1.00 25.58 ATOM 20 CA PHE A 406 43.262 155.498 -0.003 1.00 26.27 ATOM 21 CA GLU A 407 45.091 158.476 1.277 1.00 27.26 ATOM 22 CA VAL A 408 46.556 158.119 4.739 1.00 26.76 ATOM 23 CA ALA A 409 48.826 160.851 6.074 1.00 25.38 ATOM 24 CA TRP A 410 50.050 162.155 9.411 1.00 26.91 ATOM 25 CA ASP A 411 52.825 164.108 11.098 1.00 34.42 ATOM 26 CA GLU A 412 55.425 162.975 13.618 1.00 37.51 ATOM 27 CA VAL A 413 56.146 165.601 16.272 1.00 38.86 ATOM 28 CA SER A 414 59.429 166.425 17.996 1.00 38.79 ATOM 29 CA TYR A 415 60.785 169.501 19.781 1.00 40.52 ATOM 30 CA ASP A 416 63.862 171.526 18.930 1.00 51.58 ATOM 31 CA LYS A 417 66.338 172.745 21.572 1.00 61.35 ATOM 32 CA GLU A 418 64.017 175.746 22.023 1.00 64.27 ATOM 33 CA GLY A 419 61.166 173.430 23.005 1.00 56.27 ATOM 34 CA ASN A 420 59.432 174.311 19.741 1.00 54.47 ATOM 35 CA GLU A 421 57.416 171.794 17.748 1.00 48.01 ATOM 36 CA VAL A 422 58.739 170.236 14.566 1.00 43.15 ATOM 37 CA LEU A 423 56.394 168.286 12.329 1.00 40.65 ATOM 38 CA THR A 424 57.604 165.679 9.871 1.00 38.91 ATOM 39 CA HIS A 425 55.010 164.607 7.306 1.00 39.95 ATOM 40 CA LYS A 426 54.474 160.893 6.630 1.00 33.96 ATOM 41 CA THR A 427 52.212 158.982 4.246 1.00 34.00 ATOM 42 CA TRP A 428 51.189 155.377 3.650 1.00 32.59 ATOM 43 CA ASP A 429 53.116 153.921 0.685 1.00 36.57 ATOM 44 CA GLY A 430 49.878 152.363 -0.473 1.00 29.69 ATOM 45 CA ASN A 431 48.254 155.749 -1.121 1.00 31.75 ATOM 46 CA TYR A 432 46.533 156.334 -4.476 1.00 33.47 ATOM 47 CA GLN A 433 46.597 152.696 -5.519 1.00 33.94 ATOM 48 CA ASP A 434 43.681 150.498 -6.556 1.00 37.22 ATOM 49 CA LYS A 435 42.426 148.083 -3.901 1.00 37.91 ATOM 50 CA THR A 436 39.725 145.555 -4.788 1.00 45.89 ATOM 51 CA ALA A 437 37.220 143.110 -3.253 1.00 52.93 ATOM 52 CA HIS A 438 38.667 142.432 0.186 1.00 50.13 ATOM 53 CA TYR A 439 41.938 144.068 0.971 1.00 38.33 ATOM 54 CA SER A 440 43.295 144.221 4.512 1.00 38.27 ATOM 55 CA THR A 441 46.256 146.150 5.856 1.00 38.52 ATOM 56 CA VAL A 442 47.715 147.726 8.962 1.00 32.22 ATOM 57 CA ILE A 443 49.507 151.050 9.066 1.00 32.01 ATOM 58 CA PRO A 444 51.506 151.262 12.299 1.00 35.49 ATOM 59 CA LEU A 445 51.908 154.729 13.834 1.00 36.22 ATOM 60 CA GLU A 446 54.569 156.055 16.182 1.00 36.18 ATOM 61 CA ALA A 447 53.503 157.269 19.648 1.00 35.41 ATOM 62 CA ASN A 448 54.291 160.803 18.454 1.00 32.86 ATOM 63 CA ALA A 449 51.910 160.646 15.489 1.00 31.09 ATOM 64 CA ARG A 450 49.739 163.741 14.995 1.00 31.81 ATOM 65 CA ASN A 451 47.370 165.368 12.501 1.00 30.86 ATOM 66 CA ILE A 452 46.226 161.909 11.359 1.00 27.49 ATOM 67 CA ARG A 453 43.905 161.819 8.333 1.00 30.37 ATOM 68 CA ILE A 454 42.328 158.790 6.649 1.00 27.84 ATOM 69 CA LYS A 455 40.539 159.049 3.308 1.00 26.69 ATOM 70 CA ALA A 456 39.077 156.537 0.884 1.00 30.28 ATOM 71 CA ARG A 457 37.595 157.271 -2.533 1.00 29.83 ATOM 72 CA GLU A 458 35.602 155.036 -4.890 1.00 29.61 ATOM 73 CA CYS A 459 36.946 154.939 -8.421 1.00 38.86 ATOM 74 CA THR A 460 34.059 156.068 -10.622 1.00 39.59 ATOM 75 CA GLY A 461 35.065 159.183 -12.544 1.00 38.13 ATOM 76 CA LEU A 462 38.062 160.480 -14.453 1.00 33.90 ATOM 77 CA ALA A 463 40.726 160.660 -11.737 1.00 30.15 ATOM 78 CA TRP A 464 41.442 160.891 -7.986 1.00 32.98 ATOM 79 CA GLU A 465 40.468 164.582 -7.872 1.00 38.03 ATOM 80 CA TRP A 466 36.959 163.848 -9.162 1.00 32.97 ATOM 81 CA TRP A 467 36.257 160.603 -7.314 1.00 31.84 ATOM 82 CA ARG A 468 33.624 160.136 -4.629 1.00 31.47 ATOM 83 CA ASP A 469 34.646 160.117 -0.944 1.00 28.43 ATOM 84 CA VAL A 470 33.743 156.853 0.848 1.00 23.54 ATOM 85 CA ILE A 471 35.405 158.001 4.091 1.00 25.16 ATOM 86 CA SER A 472 37.104 161.299 4.888 1.00 24.75 ATOM 87 CA GLU A 473 38.492 161.923 8.357 1.00 25.16 ATOM 88 CA TYR A 474 40.782 164.614 9.709 1.00 26.80 ATOM 89 CA ASP A 475 42.555 164.868 13.030 1.00 34.35 ATOM 90 CA VAL A 476 41.725 161.253 13.881 1.00 35.41 ATOM 91 CA PRO A 477 42.693 160.834 17.558 1.00 40.41 ATOM 92 CA LEU A 478 45.627 158.413 17.935 1.00 40.50 ATOM 93 CA THR A 479 44.699 155.353 19.999 1.00 45.33 ATOM 94 CA ASN A 480 45.661 151.652 20.121 1.00 44.74 ATOM 95 CA ASN A 481 43.530 150.692 17.141 1.00 36.66 ATOM 96 CA ILE A 482 41.887 152.866 14.493 1.00 31.44 ATOM 97 CA ASN A 483 39.532 150.612 12.558 1.00 32.39 ATOM 98 CA VAL A 484 38.431 151.911 9.179 1.00 30.74 ATOM 99 CA SER A 485 36.099 149.771 7.090 1.00 31.12 ATOM 100 CA ILE A 486 34.514 150.446 3.706 1.00 33.70 ATOM 101 CA TRP A 487 31.829 148.404 1.967 1.00 37.46 ATOM 102 CA GLY A 488 28.699 148.836 -0.119 1.00 36.89 ATOM 103 CA THR A 489 28.067 149.418 -3.790 1.00 40.45 ATOM 104 CA THR A 490 29.350 151.893 -6.343 1.00 42.17 ATOM 105 CA LEU A 491 26.090 153.833 -6.089 1.00 42.91 ATOM 106 CA TYR A 492 25.845 153.547 -2.325 1.00 39.54 ATOM 107 CA PRO A 493 29.136 152.891 -0.565 1.00 35.87 ATOM 108 CA GLY A 494 29.256 152.671 3.232 1.00 31.47 ATOM 109 CA SER A 495 31.964 153.172 5.864 1.00 35.02 ATOM 110 CA SER A 496 32.800 153.440 9.549 1.00 36.33 TER