>1xi6A (A:) observed residues (from ATOM records)
klkfwrevaidiisdfettimpffgnpdggklvklvdklaedlilsritelgvnvvseev
gvidneseytvivdpldgsynfiagipffalslavfkkdkpiyaiiyepmterffegipg
egaflngkrikvrksisfysrgkgheivkhvkrtrtlgaialelaylamgaldgvvdvrk
yvrptdiaagtiiakeagalikdsagkdidisfnatdrldviavnseellktil