nucleoporin

Nucleoporins are proteins that form the nuclear pore complex, a crucial structure within the nuclear envelope of eukaryotic cells. The nuclear envelope separates the nucleus, which contains the cell's DNA, from the cytoplasm.12

Nucleoporins play a vital role in regulating the transport of molecules between the nucleus and the cytoplasm. They act as a selective barrier, allowing small molecules to pass freely but controlling the movement of larger molecules, such as RNA and proteins. This regulated transport is essential for processes like gene expression and protein synthesis.21

A nucleoprotein is a molecule composed of a protein linked to either DNA or RNA. Examples include chromosomes, where histone proteins are attached to DNA, and ribosomes, which consist of ribosomal proteins bound to ribosomal RNA.3