Chains and heterogens:
PDB Chain Sequences:
>1xig_ (-) yqptpedrftfglwtvgwqgrdpfgdatrraldpvesvqrlaelgahgvtfhdddlipfg ssdsereehvkrfrqalddtgmkvpmattnlfthpvfkdggftandrdvrryalrktirn idlavelgaetyvawggregaesggakdvrdaldrmkeafdllgeyvtsqgydirfaiep kpneprgdillptvghalafierlerpelygvnpevgheqmaglnfphgiaqalwagklf hidlngqngikydqdlrfgagdlraafwlvdllesagysgprhfdfkpprtedfdgvwas aagcmrnylilkeraaafradpevqealrasrldelarptaadglqallddrsafeefdv daaaargmaferldqlamdhllgar