>1xx5A (A:) observed residues (from ATOM records)
sestrrkkkqkeivdlhnslrrrvsptasnmlkmewypeaasnaerwantcslnhspdnl
rvlegiqcgesiymssnartwteiihlwhdeyknfvygvganppgsvtghytqivwyqty
ragcavsycpssawsyfyvcqycpsgnfqgktatpyklgppcgdcpsacdnglctnpcti
ynkltncdsllkqsscqddwiksncpascfcrnkii