This maintains the shape of the nucleus, spaces the nuclear pore complexes and organizes heterochromatin, the condensed region of DNA of nucleus. The nuclear skeletal network (karyoskeleton) that results serves as an anchor for chromatin. These first form dimers, and subsequently orientate in a head-to-tail fashion to produce filaments. The fibrillar nature of the lamina arises from the building blocks of the lamina the laminin proteins. It is highly proteinaceous and is fibrillar in appearance. The Nuclear Lamina is a structure that is located near the inner nuclear membrane. These subcompartments together form the nucleoskeleton, and include the following:Ĭell and Nucleus, Image Copyright: sanjayart / Shutterstock Nuclear Membrane (nuclear envelope)

These facilitate the various nuclear processes, particularly gene expression. The mechanical support and functional organization of the nucleus is contributed by several nuclear subcompartments, or nuclear bodies. Additionally, the nucleus dynamically interacts with the surrounding cytoskeleton. The nucleus is mechanically stable, possessing the ability to resist deformation. The nucleus contains approximately 2m of DNA which is enmeshed by the nuclear envelope, a crosslinked network of proteins and membranes.

The effect of these processes extends to affecting cellular metabolism and growth. These processes include transcription, replication, splicing and ribosome biogenesis. The cell nucleus is the site of many important biological functions of the eukaryotic cell.

Nucleo funcion