>1xx7A (A:) observed residues (from ATOM records)
sidlillagklkriprmgwlikgvpnpesvadhsyrvafitlllaeelkkkgveidveka
lkiaiihdlgeaiitdlplsaqkylnkeeaeakalkdvlpeytelfeeyskaltlegqlv
kiadkldmiiqayeyelsgaknlsefwnaledlekleisrylreiieevrrl