>sp|C6A1U9|FEN_THESM Flap endonuclease 1 OS=Thermococcus sibiricus GN=fen MGVPIGELLPKKELELENLNGRKVAIDAFNAIYQFLSTIRQKDGTPLMDSKGRITSHLSG LFYRTINLMEAGIKPAYVFDGKPPEFKKKELEKRAETREEALEKWEIALARGELEEAKKY AQRASKINEILIEDAKKLLELMGIPWVQAPSEGEAQAAYMASKGDVWASASQDYDSLLFG TPKLVRNLTITGKRKLPGKDVYIEVKPELILLEDVLKELKLTREKLIELAILVGTDYNPG GIKGLGPKKALEIVKYSKDPLSKYQKTSEVDLYAIKEFFLNPPTTNDYKLEWKLPDEESI IKFLCDEHDFSEERVKNGLERLKKVTKTGKQFTLDTWFKK