>1xx5B (B:) observed residues (from ATOM records)
sestrrkkkqkeivdlhnslrrrvsptasnmlkmewypeaasnaerwantcslnhspdnl
rvlegiqcgesiymssnartwteiihlwhdeyknfvygvganppgsvtghytqivwyqty
ragcavsycpssawsyfyvcqycpsgnfqgktatpyklgppcgdcpsacdnglctnpcti
ynkltncdsllkqsscqddwiksncpascfcrnkii