H-Ras is a protein that plays a crucial role in cell signaling, which helps regulate various cellular processes such as growth, differentiation, and survival. It is part of the Ras family of proteins and is encoded by the HRAS gene. When activated, H-Ras transmits signals from outside the cell to the inside, influencing how cells respond to growth factors. Mutations in the HRAS gene can lead to uncontrolled cell growth and are associated with certain types of cancer, including bladder cancer and thyroid cancer. Understanding H-Ras and its functions is important for developing targeted therapies in cancer treatment.