Chains and heterogens:
PDB Chain Sequences:
>1a9s_ (-) mqngytyedyqdtakwllshteqrpqvavicgsglgglvnkltqaqtfdyseipnfpest vpghagrlvfgilngracvmmqgrfhmyegypfwkvtfpvrvfrllgvetlvvtnaaggl npnfevgdimlirdhinlpgfsgenplrgpneerfgvrfpamsdaydrdmrqkahstwkq mgeqrelqegtyvmlggpnfetvaecrllrnlgadavgmstvpevivarhcglrvfgfsl itnkvimdtesqgkanheevleagkqaaqkleqfvsllmasipvsghtg
>1a9s_ (-) mqngytyedyqdtakwllshteqrpqvavicgsglgglvnkltqaqtfdyseipnfpest vpghagrlvfgilngracvmmqgrfhmyegypfwkvtfpvrvfrllgvetlvvtnaaggl npnfevgdimlirdhinlpgfsgenplrgpneerfgvrfpamsdaydrdmrqkahstwkq mgeqrelqegtyvmlggpnfetvaecrllrnlgadavgmstvpevivarhcglrvfgfsl itnkvimdtesqgkanheevleagkqaaqkleqfvsllmasi