>1k4vA (A:) observed residues (from ATOM records)
klklsdwfnpfkrpevvtmtkwkapvvwegtynravldnyyakqkitvgltvfavgryie
hyleefltsankhfmvghpvifyimvddvsrmplielgplrsfkvfkikpekrwqdismm
rmktigehivahiqhevdflfcmdvdqvfqdkfgvetlgesvaqlqawwykadpndftye
rrkesaayipfgegdfyyhaaifggtptqvlnitqecfkgilkdkkndieaqwhdeshln
kyfllnkptkilspeycwdyhiglpadiklvkmswqtkeynvvrnnv