>2arkF (F:) observed residues (from ATOM records)
amgkvlviydtrtgntkkmaelvaegarslegtevrlkhvdeatkedvlwadglavgspt
nmglvswkmkrffddvlgdlwgeidgkiacafsssggwgggnevacmsiltmlmnfgflv
fgvtdyvgkkftlhygavvageprseeekeacrrlgrrlaewvaifvdgrkellekirkd
parfv