HIS 339 * PHE 340 * ASN 341 * ALA 342 * LEU 343 * GLY 344 * GLY 345 * TRP 346 * GLY 347 * GLU 348 * LEU 349 * GLN 350 * ASN 351 * LEU 453 * LYS 457 * PRO 458 * ASN 459 * TYR 460 * ASP 461 * MET 462 * THR 463 * LEU 464 * THR 465 * ASN 466 * ALA 467 * CYS 468 * ILE 469 * ALA 470 * SER 472 * GLN 473 * ASN 500 * GLU 501 * PHE 502 * ALA 504 * GLN 505 * THR 506 * GLN 508 * ARG 509 *