>1xx7B (B:) observed residues (from ATOM records)
sidlillagklkriprmgwlikgvpnpesvadhsyrvafitlllaeelkkkgveidveka
lkiaiihdlgeaiitdlplsaqkylnkeeaeakalkdvlpeytelfeeyskaltlegqlv
kiadkldmiiqayeyelsgaknlsefwnaledlekleisrylreiieevrrl