Chains and heterogens:
PDB Chain Sequences:
>1bk5A (A:) lpqmtqqlnsddmqeqlsatvkfrqilsrehrppidvviqagvvprlvefmrenqpemlq leaawaltniasgtsaqtkvvvdadavplfiqllytgsvevkeqaiwalgnvagdstdyr dyvlqcnamepilglfnsnkpslirtatwtlsnlcrgkkpqpdwsvvsqalptlakliys mdtetlvdacwaisylsdgpqeaiqavidvripkrlvellshestlvqtpalravgnivt gndlqtqvvinagvlpalrlllsspkenikkeacwtisnitagnteqiqavidanlippl vkllevaeyktkkeacwaisnassgglqrpdiirylvsqgcikplcdlleiadnriievt ldalenilkmgeadkearglninenadfiekaggmekifncqqnendkiyekaykiiety fg
>1bk5B (B:) lpqmtqqlnsddmqeqlsatvkfrqilsrehrppidvviqagvvprlvefmrenqpemlq leaawaltniasgtsaqtkvvvdadavplfiqllytgsvevkeqaiwalgnvagdstdyr dyvlqcnamepilglfnsnkpslirtatwtlsnlcrgkkpqpdwsvvsqalptlakliys mdtetlvdacwaisylsdgpqeaiqavidvripkrlvellshestlvqtpalravgnivt gndlqtqvvinagvlpalrlllsspkenikkeacwtisnitagnteqiqavidanlippl vkllevaeyktkkeacwaisnassgglqrpdiirylvsqgcikplcdlleiadnriievt ldalenilkmgeadkearglninenadfiekaggmekifncqqnendkiyekaykiiety fg