Rb protein

The Rb protein, also known as retinoblastoma protein, plays a crucial role in regulating the cell cycle, which is the process cells go through to grow and divide. It acts as a tumor suppressor, meaning it helps prevent cells from dividing uncontrollably, which can lead to cancer. When Rb is functioning properly, it keeps cells in a resting state and stops them from progressing to division until they are ready. If Rb is malfunctioning or absent, it can result in unchecked cell growth, contributing to various types of cancer, including retinoblastoma, a rare eye cancer primarily found in children.