Lamin A is a type of protein that plays a crucial role in maintaining the structure and stability of the cell nucleus. It is part of a group of proteins known as lamins, which form a mesh-like layer called the nuclear lamina just beneath the inner membrane of the nucleus. This structure helps organize the genetic material and supports various cellular functions. Mutations in the LMNA gene, which encodes Lamin A, can lead to several genetic disorders, including progeria and muscular dystrophy. These conditions often result in premature aging or muscle weakness, highlighting the importance of Lamin A in cellular health and development.