>5a4uF (F:) observed residues (from ATOM records)
gikvfghpasiatrrvlialheknldfelvhvelkdgehkkepflsrnpfgqvpafedgd
lklfesraitqyiahryenqgtnllqtdsknisqyaimaigmqvedhqfdpvasklafeq
ifksiyglavvaeeeaklakvldvyearlkefkylagetftltdlhhipaiqyllgtptk
klfterprvnewvaeitkrpasekvq