>5a5kU (U:) observed residues (from ATOM records)
gikvfghpasiatrrvlialheknldfelvhvelkdgehkkepflsrnpfgqvpafedgd
lklfesraitqyiahryenqgtnllqtdsknisqyaimaigmqvedhqfdpvasklafeq
ifksiyglttdeavvaeeeaklakvldvyearlkefkylagetftltdlhhipaiqyllg
tptkklfterprvnewvaeitkrpasekvq