Chains and heterogens:
PDB Chain Sequences:
>4kvnA (A:) agstatlclghhavpngtivktitndqievtnatelvqssstgeicdsphqildgknctl idallgdpqcdgfqnkkwdlfverskaysncypydvpdyaslrslvassgtlefnnesfn wtgvtqngtssacirrsknsffsrlnwlthlnfkypalnvtmpnneqfdklyiwgvhhpg tdkdqiflyaqasgritvstkrsqqtvspnigsrprvrnipsrisiywtivkpgdillin stgnliaprgyfkirsgkssimrsdapigkcnsecitpngsipndkpfqnvnritygacp ryvkqntlklatgmrnvpekqtrgifgaiagfiengwegmvdgwygfrhqnsegrgqaad lkstqaaidqingklnrligktnekfhqiekefsevegriqdlekyvedtkidlwsynae llvalenqhtidltdsemnklfektkkqlrenaedmgngcfkiyhkcdnacigsirngty dhdvyrdealnnrfqikgsgrlvpr
>4kvnA (A:) atlclghhavpngtivktitndqievtnatelvqssstgeicdsphqildgknctlidal lgdpqcdgfqnkkwdlfverskaysncypydvpdyaslrslvassgtlefnnesfnwtgv tqngtssacirrsknsffsrlnwlthlnfkypalnvtmpnneqfdklyiwgvhhpgtdkd qiflyaqasgritvstkrsqqtvspnigsrprvrnipsrisiywtivkpgdillinstgn liaprgyfkirsgkssimrsdapigkcnsecitpngsipndkpfqnvnritygacpryvk qntlklatgmrnvpekqiengwegmvdgwygfrhqnsegrgqaadlkstqaaidqingkl nrligktnekfhqiekefekyvedtkidlwsynaellvalenqhtidltdsemnklfekt kkqlrenaedmgngcfkiyhkcdnacigsirngtydhdvyrdealnnrfq
>4kvnL (L:) ivltqspatlsvspgeratlscrasqvishnlawyqqkpgqaprlliygastrasgipar fsgsgsgtdytltitslqpedfavyycqhysnwpprltfgggtkveikrtvaapsvfifp psdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstl tlskadyekhkvyacevthqglsspvtksfnrgec
>4kvnL (L:) ivltqspatlsvspgeratlscrasqvishnlawyqqkpgqaprlliygastrasgipar fsgsgsgtdytltitslqpedfavyycqhysnwpprltfgggtkveikrtvaapsvfifp psdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstl tlskadyekhkvyacevthqglsspvtksfnrg