c-Myc is a protein that plays a crucial role in cell growth, division, and metabolism. It is a transcription factor, meaning it helps regulate the expression of specific genes. By binding to DNA, c-Myc can activate or repress genes that are important for cell proliferation and differentiation. Abnormal levels of c-Myc are often associated with various cancers, as its overexpression can lead to uncontrolled cell growth. Researchers study c-Myc to understand its role in tumorigenesis and to develop potential therapies targeting its activity in cancer cells.