Chains and heterogens:
PDB Chain Sequences:
>6irkA (A:) mnyqptpedrftfglwtvgwqgrdpfgdatrraldpvesvrrlaelgahgvtfhdddlip fgssdsereehvkrfrqalddtgmkvpmattnlfthpvfkdggftandrdvrryalrkti rnidlavelgaetyvawggregaesggakdvrdaldrmkeafdllgeyvtsqgydirfai epkpneprgdillptvghalafierlerpelygvnpevgheqmaglnfphgiaqalwagk lfhidlngqngikydqdlrfgagdlraafwlvdllesagysgprhfdfkpprtedfdgvw asaagcmrnylilkeraaafradpevqealrasrldelarptaadglqallddrsafeef dvdaaaargmaferldqlamdhllgarg
>6irkA (A:) yqptpedrftfglwtvgwqgrdpfgdatrraldpvesvrrlaelgahgvtfhdddlipfg ssdsereehvkrfrqalddtgmkvpmattnlfthpvfkdggftandrdvrryalrktirn idlavelgaetyvawggregaesggakdvrdaldrmkeafdllgeyvtsqgydirfaiep kpneprgdillptvghalafierlerpelygvnpevgheqmaglnfphgiaqalwagklf hidlngqngikydqdlrfgagdlraafwlvdllesagysgprhfdfkpprtedfdgvwas aagcmrnylilkeraaafradpevqealrasrldelarptaadglqallddrsafeefdv daaaargmaferldqlamdhllgarg