>1k4vB (B:) observed residues (from ATOM records)
klklsdwfnpfkrpevvtmtkwkapvvwegtynravldnyyakqkitvgltvfavgryie
hyleefltsankhfmvghpvifyimvddvsrmplielgplrsfkvfkikpekrwqdismm
rmktigehivahiqhevdflfcmdvdqvfqdkfgvetlgesvaqlqawwykadpndftye
rrkesaayipfgegdfyyhaaifggtptqvlnitqecfkgilkdkkndieaqwhdeshln
kyfllnkptkilspeycwdyhiglpadiklvkmswqtkeynvvrnnv