Nuclear membrane

The nuclear membrane (or nuclear envelope) is the membrane inside a cell around the nucleus. It has the genetic material (chromosomes and DNA) and the nucleolus inside it.^[1][2][3] The membrane forms a double layer.^[4] It is connected to another group of membranes in the cell, the endoplasmic reticulum.

The nuclear envelope is a double layer of membrane, with pores that are protein complexes.

Detail of the nuclear envelope structure

The membranes or envelope is a double lipid bilayer membrane which surrounds the chromosomes and nucleolus in eukaryotic cells.^[3]

The nuclear membrane has thousands of nuclear pores. They are large hollow proteins about 100 nm across, with an inner channel about 40 nm wide.^[4] They link the inner and outer nuclear membranes.

During cell division, the nuclear membrane breaks down to allow mitosis to take place.