Chains and heterogens:
PDB Chain Sequences:
>1xihA (A:) mnyqptpedrftfglwtvgwqgrdpfgdatrraldpvesvqrlaelgahgvtfhdddlip fgssdsereehvkrfrqalddtgmkvpmattnlfthpvfkdggftandrdvrryalrkti rnidlavelgaetyvawggregaesggakdvrdaldrmkeafdllgeyvtsqgydirfai epkpneprgdillptvghalafierlerpelygvnpevgheqmaglnfphgiaqalwagk lfhidlngqngikydqdlrfgagdlraafwlvdllesagysgprhfdfkpprtedfdgvw asaagcmrnylilkeraaafradpevqealrasrldelarptaadglqallddrsafeef dvdaaaargmaferldqlamdhllgarg
>1xihA (A:) yqptpedrftfglwtvgwqgrdpfgdatrraldpvesvqrlaelgahgvtfhdddlipfg ssdsereehvkrfrqalddtgmkvpmattnlfthpvfkdggftandrdvrryalrktirn idlavelgaetyvawggregaesggakdvrdaldrmkeafdllgeyvtsqgydirfaiep kpneprgdillptvghalafierlerpelygvnpevgheqmaglnfphgiaqalwagklf hidlngqngikydqdlrfgagdlraafwlvdllesagysgprhfdfkpprtedfdgvwas aagcmrnylilkeraaafradpevqealrasrldelarptaadglqallddrsafeefdv daaaargmaferldqlamdhllgar