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  2. Nuclear envelope - Wikipedia

    en.wikipedia.org/wiki/Nuclear_envelope

    The nuclear envelope, also known as the nuclear membrane, [1][a] is made up of two lipid bilayer membranes that in eukaryotic cells surround the nucleus, which encloses the genetic material. The nuclear envelope consists of two lipid bilayer membranes: an inner nuclear membrane and an outer nuclear membrane. [4]

  3. Cell nucleus - Wikipedia

    en.wikipedia.org/wiki/Cell_nucleus

    Centrosome. Cell membrane. The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others including osteoclasts have many.

  4. Nucleoplasm - Wikipedia

    en.wikipedia.org/wiki/Nucleoplasm

    The nucleoplasm, also known as karyoplasm, [1] is the type of protoplasm that makes up the cell nucleus, the most prominent organelle of the eukaryotic cell. It is enclosed by the nuclear envelope, also known as the nuclear membrane. [2] The nucleoplasm resembles the cytoplasm of a eukaryotic cell in that it is a gel-like substance found within ...

  5. Endomembrane system - Wikipedia

    en.wikipedia.org/wiki/Endomembrane_system

    The endomembrane system is composed of the different membranes (endomembranes) that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments, or organelles. In eukaryotes the organelles of the endomembrane system include: the nuclear membrane, the endoplasmic reticulum ...

  6. Intermembrane space - Wikipedia

    en.wikipedia.org/wiki/Intermembrane_space

    The intermembrane space (IMS) is the space occurring between or involving two or more membranes. [1] In cell biology, it is most commonly described as the region between the inner membrane and the outer membrane of a mitochondrion or a chloroplast. It also refers to the space between the inner and outer nuclear membranes of the nuclear envelope ...

  7. Nesprin - Wikipedia

    en.wikipedia.org/wiki/Nesprin

    Nesprin. InterPro. IPR030265. Membranome. 123. Nesprins (nuclear envelope spectrin repeat proteins) [1] are a family of proteins that are found primarily in the outer nuclear membrane, as well as other subcellular compartments. [2] They contain a C-terminal KASH transmembrane domain and are part of the LINC complex (Linker of Nucleoskeleton and ...

  8. Nuclear pore - Wikipedia

    en.wikipedia.org/wiki/Nuclear_pore

    The human nuclear pore complex (hNPC) is a substantial structure, with a molecular weight of 120 megadaltons (MDa). [11] Each NPC comprises eight protein subunits encircling the actual pore, forming the outer ring. Additionally, these subunits project a spoke-shaped protein over the pore channel.

  9. Nucleoporin - Wikipedia

    en.wikipedia.org/wiki/Nucleoporin

    Nucleoporins are a family of proteins which are the constituent building blocks of the nuclear pore complex (NPC). [1] The nuclear pore complex is a massive structure embedded in the nuclear envelope at sites where the inner and outer nuclear membranes fuse, forming a gateway that regulates the flow of macromolecules between the cell nucleus ...