Chains and heterogens:
PDB Chain Sequences:
>2f61A (A:) arpcipksfgyssvvcvcnatycdsfdpptfpalgtfsryestrsgrrmelsmgpiqanh tgtgllltlqpeqkfqkvkgfggamtdaaalnilalsppaqnlllksyfseegigyniir vpmascdfsirtytyadtpddfqlhnfslpeedtklkiplihralqlaqrpvsllaspwt sptwlktngavngkgslkgqpgdiyhqtwaryfvkfldayaehklqfwavtaenepsagl lsgypfqclgftpehqrdfiardlgptlansthhnvrllmlddqrlllphwakvvltdpe aakyvhgiavhwyldflapakatlgethrlfpntmlfaseacvgskfweqsvrlgswdrg mqyshsiitnllyhvvgwtdwnlalnpeggpnwvrnfvdspiivditkdtfykqpmfyhl ghfskfipegsqrvglvasqkndldavalmhpdgsavvvvlnrsskdvpltikdpavgfl etispgysihtylwhrq
>2f61B (B:) arpcipksfgyssvvcvcnatycdsfdpptfpalgtfsryestrsgrrmelsmgpiqanh tgtgllltlqpeqkfqkvkgfggamtdaaalnilalsppaqnlllksyfseegigyniir vpmascdfsirtytyadtpddfqlhnfslpeedtklkiplihralqlaqrpvsllaspwt sptwlktngavngkgslkgqpgdiyhqtwaryfvkfldayaehklqfwavtaenepsagl lsgypfqclgftpehqrdfiardlgptlansthhnvrllmlddqrlllphwakvvltdpe aakyvhgiavhwyldflapakatlgethrlfpntmlfaseacvgskfweqsvrlgswdrg mqyshsiitnllyhvvgwtdwnlalnpeggpnwvrnfvdspiivditkdtfykqpmfyhl ghfskfipegsqrvglvasqkndldavalmhpdgsavvvvlnrsskdvpltikdpavgfl etispgysihtylwhrq