>5a4uE (E:) observed residues (from ATOM records)
agikvfghpasiatrrvlialheknldfelvhvelkdgehkkepflsrnpfgqvpafedg
dlklfesraitqyiahryenqgtnllqtdsknisqyaimaigmqvedhqfdpvasklafe
qifksiyglttdeavvaeeeaklakvldvyearlkefkylagetftltdlhhipaiqyll
gtptkklfterprvnewvaeitkrpasekvq