Chains and heterogens:
PDB Chain Sequences:
>1q61A (A:) gnaaaakkgseqesvkeflakakedflkkwenpaqntahldqferiktlgtgsfgrvmlv khmetgnhyamkildkqkvvklkqiehtlnekrilqavnfpflvklefsfkdnsnlymvm eyapggemfshlrrigrfsepharfyaaqivltfeylhsldliyrdlkpenlmidqqgyi kvtdfgfakrvkgrtwtlcgtpeylapeiilskgynkavdwwalgvliyemaagyppffa dqpiqiyekivsgkvrfpshfssdlkdllrnllqvdltkrfgnlkngvndiknhkwfatt dwiaiyqrkveapfipkfkgpgdtsnfddyeeeeirvsinekcgkefsef
>1q61A (A:) svkeflakakedflkkwenpaqntahldqferiktlgtgsfgrvmlvkhmetgnhyamki ldkqkvvklkqiehtlnekrilqavnfpflvklefsfkdnsnlymvmeyapggemfshlr rigrfsepharfyaaqivltfeylhsldliyrdlkpenlmidqqgyikvtdfgfakrvkg rtwtlcgtpeylapeiilskgynkavdwwalgvliyemaagyppffadqpiqiyekivsg kvrfpshfssdlkdllrnllqvdltkrfgnlkngvndiknhkwfattdwiaiyqrkveap fipkfkgpgdtsnfddyeeeeirvsinekcgkefsef