KLF4 also known as GKLF is a protein that belongs to the Kruppel family of transcription factors. a group of transcription factors characterized by zinc finger domains, which are critical for binding DNA. The zinc finger structure consists of repeated motifs that interact specifically with DNA sequences, allowing KLF4 to regulate gene expression involved in cellular processes such as proliferation, differentiation, and stress response. This structural feature maintains epithelial integrity and regulates cell cycle arrest, particularly in tissues like the gastrointestinal tract and skin. KLF4′s ability to modulate gene expression through zinc finger domains makes KLF4 a key player in development and cellular homeostasis.