Chains and heterogens:
PDB Chain Sequences:
>1smhA (A:) gnaaaakkgseqesvkeflakakedflkkwenpaqntahldqferiktlgtgsfgrvmlv khmetgnhyamkildkqkvvklkeiehtlnekrilqavnfpflvklefsfkdnsnlymvm eyapggemfshlrrigrfsepharfyaaqivltfeylhsldliyrdlkpenlmidqqgyi qvtdfglakrvkgrtwtlcgtpeylapeiilskgynkavdwwalgvliyemaagyppffa dqpiqiyekivsgkvrfpshfssdlkdllrnllqvdltkrfgnlkngvndiknhkwfatt dwiaiyqrkveapfipkfkgpgdtsnfddyeeeeirvsinekcgkefsef