Chains and heterogens:
PDB Chain Sequences:
>1b8sA (A:) gyvpavvigtgygaavsalrlgeagvqtlmlemgqlwnqpgpdgnifcgmlnpdkrsswf knrteaplgsflwldvvnrnidpyagvldrvnydqmsvyvgrgvgggslvnggmavepkr syfeeilprvdssemydryfpransmlrvnhidtkwfedtewykfarvsreqagkaglgt vfvpnvydfgymqreaagevpksalateviygnnhgkqsldktylaaalgtgkvtiqtlh qvktirqtkdggyaltveqkdtdgkllatkeiscrylflgagslgstellvrardtgtlp nlnsevgagwgpngnimtaranhmwnptgahqssipalgidawdnsdssvfaqiapmpag letwvslylaitknpqrgtfvydaatdraklnwtrdqnapavnaakalfdrinkangtiy rydlfgtqlkafaddfcyhplggcvlgkatddygrvagyknlyvtdgslipgsvgvnpfv titalaernveriikqdv