Overview
G2 phase is a key stage of the cell cycle in eukaryotic cells. It is the period of the cell cycle between DNA synthesis (S-phase) and mitosis (M-phase) and is characterized by increased metabolic activity, cell growth and preparation for cell division. During G2, cells make molecules and organelles in order to create specialized structures used in the process of mitosis. G2 is therefore essential for the growth and division of cells, allowing them to replicate and sustain life. G2 phase is highly regulated and controlled as it influences key steps of the cell cycle, such as mitosis, and is essential for the maintenance and survival of the organism. It is tightly regulated by various proteins and checkpoint pathways that ensure accuracy. As a result, the role of G2 phase is widely studied in cancer research, as cancer cells often display mutations that disrupt the cell cycle and impact G2 phase, leading to uncontrolled cell division.