FEN1 (Flap Endonuclease 1)

FEN1 (Flap Endonuclease 1) is an enzyme involved in DNA replication and repair. During DNA copying, sometimes extra strands, called flaps, form and need to be removed to ensure a correct, continuous DNA sequence. FEN1 recognizes these flaps and cuts them away precisely. This process helps maintain genetic stability by preventing mutations. It's essential for proper cell division and genome maintenance, acting like a quality control enzyme that cleans up the DNA to keep it accurate for every new cell.