>2f2fF (F:) observed residues (from ATOM records)
dpttypdvelsppprislrslltaqpikndhydshnylsthwelidykgkeyeklrdggt
lvqfkvvgaakcfafpgegttdckdidhtvfnliptntgaflikdallgfcmtshdfddl
rlepcgisvsgrtfslayqwgilppfgpskilrp