>4xiyA (A:) observed residues (from ATOM records)
mkvyydkdcdlsiiqskkvaiigygsqghahacnlkdsgvdvyvglragsasvakaeahg
ltvksvkdavaaadvvmiltpdefqgrlykdeiepnlkkgatlafahgfsihynqvvpra
dldvimiapkapghtvrsefvrgggipdliavyqdasgnaknlalsyacgvgggrtgiie
ttfkdetetdlfgeqavlcggcvelvkagfetlveagyapemayfeclhelklivdlmfe
ggianmnysisnnaeygeyvtgpevineqsrqamrnalkriqdgeyakmfitegaanyps
mtayrrnnaahqievvgeklrtmmpwia