Hect Domains are specific regions within proteins that play a crucial role in various biological processes. These domains are named after the Hect (Homologous to the E6-AP Carboxyl Terminus) protein, which is involved in tagging proteins for degradation. Hect Domains are known for their ability to transfer ubiquitin, a small protein that marks other proteins for destruction, thus regulating protein levels in cells. These domains are found in a variety of organisms, from yeast to humans, and are essential for maintaining cellular functions. By controlling the degradation of proteins, Hect Domains help manage processes like cell cycle regulation, DNA repair, and responses to stress, making them vital for overall cellular health.