Chains and heterogens:
PDB Chain Sequences:
>2a1uA (A:) mfraaapgqlrraasllrfqstlviaehandslapitlntitaatrlggevsclvagtkc dkvaqdlckvagiakvlvaqhdvykgllpeeltplilatqkqfnythicagasafgknll prvaaklevapisdiiaikspdtfvrtiyagnalctvkcdekvkvfsvrgtsfdaaatsg gsassekasstspveisewldqkltksdrpeltgakvvvsggrglksgenfkllydladq lhaavgasraavdagfvpndmqvgqtgkivapelyiavgisgaiqhlagmkdsktivain kdpeapifqvadygivadlfkvvpemteilkkk
>2a1uA (A:) fqstlviaehandslapitlntitaatrlggevsclvagtkcdkvaqdlckvagiakvlv aqhdvykgllpeeltplilatqkqfnythicagasafgknllprvaaklevapisdiiai kspdtfvrtiyagnalctvkcdekvkvfsvrgtsfdaaatsggsassekasstspveise wldqkltksdrpeltgakvvvsggrglksgenfkllydladqlhaavgasraavdagfvp ndmqvgqtgkivapelyiavgisgaiqhlagmkdsktivainkdpeapifqvadygivad lfkvvpemteilkkk
>2a1uB (B:) maelrvlvavkrvidyavkirvkpdrtgvvtdgvkhsmnpfceiaveeavrlkekklvke viavscgpaqcqetirtalamgadrgihvevppaeaerlgplqvarvlaklaekekvdlv llgkqaidddcnqtgqmtagfldwpqgtfasqvtlegdklkveraidggletlrlklpav vtadlrlnepryatlpnimkakkkkievikpgdlgvdltsklsvisvedppqrtagvkve ttedlvaklkeigri
>2a1uB (B:) lrvlvavkrvidyavkirvkpdrtgvvtdgvkhsmnpfceiaveeavrlkekklvkevia vscgpaqcqetirtalamgadrgihvevppaeaerlgplqvarvlaklaekekvdlvllg kqaidddcnqtgqmtagfldwpqgtfasqvtlegdklkveraidggletlrlklpavvta dlrlnepryatlpnimkakkkkievikpgdlgvdltsklsvisvedppqrtagvkvette dlvaklkeigri