Chains and heterogens:
PDB Chain Sequences:
>1a50A (A:) eryenlfaqlndrregafvpfvtlgdpgieqslkiidtlidagadalelgvpfsdpladg ptiqnanlrafaagvtpaqcfemlalirekhptipigllmyanlvfnngidafyarceqv gvdsvlvadvpveesapfrqaalrhniapificppnadddllrqvasygrgytyllsrsg vtgaenrgalplhhlieklkeyhaapalqgfgisspeqvsaavragaagaisgsaivkii eknlaspkqmlaelrsfvsamkaasr
>1a50A (A:) eryenlfaqlndrregafvpfvtlgdpgieqslkiidtlidagadalelgvpfsdpladg ptiqnanlrafaagvtpaqcfemlalirekhptipigllmyanlvfnngidafyarceqv gvdsvlvadvpveesapfrqaalrhniapificppnadddllrqvasygrgytyllsrsg vtgaenhhlieklkeyhaapalqgfgisspeqvsaavragaagaisgsaivkiieknlas pkqmlaelrsfvsamkaasr
>1a50B (B:) ttllnpyfgefggmyvpqilmpalnqleeafvraqkdpefqaqfadllknyagrptaltk cqnitagtrttlylkredllhggahktnqvlgqallakrmgkseiiaetgagqhgvasal asallglkcriymgakdverqspnvfrmrlmgaevipvhsgsatlkdacnealrdwsgsy etahymlgtaagphpyptivrefqrmigeetkaqildkegrlpdaviacvgggsnaigmf adfindtsvgligvepgghgietgehgaplkhgrvgiyfgmkapmmqtadgqieesysis agldfpsvgpqhaylnsigradyvsitddealeafktlcrhegiipalesshalahalkm mreqpekeqllvvnlsgrgdkdiftvhdil