Nuclear lamins are a type of protein that form a dense network inside the nucleus of eukaryotic cells. They provide structural support and help maintain the shape of the nuclear envelope, which surrounds the nucleus. Lamins are essential for various cellular processes, including DNA replication and cell division. There are two main types of nuclear lamins: lamin A and lamin B. These proteins are part of the intermediate filament family and play a crucial role in organizing chromatin and anchoring nuclear pores. Mutations in lamin genes can lead to various diseases, including muscular dystrophy and progeria.