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 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.

1. ↑ "Nuclear membrane". Biology Dictionary. Biology Online. Retrieved 7 December 2012.
2. ↑ "nuclear membrane". Merriam Webster. Retrieved 7 December 2012.
3. ↑ ^{3.0 3.1} "The inner nuclear membrane: simple, or very complex?". The EMBO Journal. April 19, 2001. Retrieved 7 December 2012.
4. ↑ ^{4.0 4.1} Hetzer, Mertin (2010). "The nuclear envelope". National Center for Biotechnology Information. 2 (3): a000539. doi:10.1101/cshperspect.a000539. PMC 2829960. PMID 20300205.