>4iz7A (A:) observed residues (from ATOM records)
pemvrgqvfdvgprytnlsyigegaygmvcsaydnvnkvrvaikkispfehqtycqrtlr
eikillrfrheniigindiiraptieqmkdvyivqdlmetdlykllktqhlsndhicyfl
yqilrglkyihsanvlhrdlkpsnlllnttcdlkicdfglarvadpdhteyvatrwyrap
eimlnskgytksidiwsvgcilaemlsnrpifpgkhyldqlnhilgilgspsqedlncii
nlkarnyllslphknkvpwnrlfpnadskaldlldkmltfnphkrieveqalahpyleqy
ydpsdepiaeapfkfdmelddlpkeklkelifeetarfqpgyrs