Chains and heterogens:
PDB Chain Sequences:
>6iygA (A:) dqagkspagvryhggdeiilqgfhwnvvreapndwynilrqqastiaadgfsaiwmpvpw rdfsswtdggksgggegyfwhdfnkngrygsdaqlrqaagalggagvkvlydvvpnhmnr gypdkeinlpagqgfwrndcadpgnypndcddgdrfiggesdlntghpqiygmfrdelan lrsgygaggfrfdfvrgyapervdswmsdsadssfcvgelwkgpseypswdwrntaswqq iikdwsdrakcpvfdfalkermqngsvadwkhglngnpdprwrevavtfvdnhdtgyspg qnggqhhwalqdglirqayayiltspgtpvvywshmydwgygdfirqliqvrrtagvrad saisfhsgysglvatvsgsqqtlvvalnsdlanpgqvasgsfseavnasngqvrvwrsgs gdgggndggegglvnvnfrcdngvtqmgdsvyavgnvsqlgnwspasavrltdtssyptw kgsialpdgqnvewkclirneadatlvrqwqsggnnqvqaaagastsgsfhhhhhh
>6iygA (A:) dqagkspagvryhggdeiilqgfhwnvvreapndwynilrqqastiaadgfsaiwmpvpw rdfsswtksgggegyfwhdfnkngrygsdaqlrqaagalggagvkvlydvvpnhmnrgyp dkeinlpagqgfwrndcadpgnypndcddgdrfiggesdlntghpqiygmfrdelanlrs gygaggfrfdfvrgyapervdswmsdsadssfcvgelwkgpseypswdwrntaswqqiik dwsdrakcpvfdfalkermqngsvadwkhglngnpdprwrevavtfvdnhdtgyspgqng gqhhwalqdglirqayayiltspgtpvvywshmydwgygdfirqliqvrrtagvradsai sfhsgysglvatvsgsqqtlvvalnsdlanpgqvasgsfseavnasngqvrvwrs