Cullin proteins

Cullin proteins are essential components of a cellular machinery called E3 ubiquitin ligases, which help regulate protein levels within cells. They act as scaffolds, organizing other proteins to identify and tag unwanted or damaged proteins with a small molecule called ubiquitin. This tagging signals the cell to break down and recycle these proteins, maintaining cellular health and balance. Different types of cullins help control various processes like cell growth, DNA repair, and immune responses, playing a vital role in keeping cells functioning properly.