ILE 309 * VAL 310 * LEU 326 * LEU 334 * LEU 335 * CYS 336 * GLY 337 * ALA 338 * THR 348 * ALA 349 * ALA 350 * HIS 351 * CYS 352 * LEU 353 * LEU 354 * TYR 355 * TRP 358 * LYS 360 * PHE 362 * TYR 398 * LEU 404 * ASP 407 * VAL 446 * TRP 449 * GLY 450 * ASN 451 * LYS 453 * GLU 454 * ASP 499 * ALA 500 * CYS 501 * GLU 502 * GLY 503 * ASP 504 * SER 505 * GLY 506 * GLY 507 * ILE 524 * VAL 525 * SER 526 * TRP 527 * GLY 528 * GLU 529 * GLY 530 * CYS 531 * ASP 532 * TYR 537 * GLY 538 * PHE 539 * TYR 540 *