>1r3nF (F:) observed residues (from ATOM records)
gtlnlpaaaplsiasgrlnqtiletgsqfggvarwgqeshefgmrrlagtaldgamrdwf
tneceslgckvkvdkignmfavypgknggkptatgshldtqpeagkydgilgvlaglevl
rtfkdnnyvpnydvcvvvwfneegarfarsctgssvwshdlsleeayglmsvgedkpesv
ydslknigyigdtpasykeneidahfelhieqgpiledenkaigivtgvqaynwqkvtvh
gvgahagttpwrlrkdallmsskmivaaseiaqrhnglftcgiidakpysvniipgevsf
tldfrhpsddvlatmlkeaaaefdrlikindggalsyesetlqvspavnfhevciecvsr
safaqfkkdqvrqiwsgaghdscqtaphvptsmifipskdglshnyyeysspeeiengfk
vllqaiinydnyrvirgh