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  2. Biological membrane - Wikipedia

    en.wikipedia.org/wiki/Biological_membrane

    Cross-sectional view of the structures that can be formed by phospholipids in an aqueous solution. A biological membrane, biomembrane or cell membrane is a selectively permeable membrane that separates the interior of a cell from the external environment or creates intracellular compartments by serving as a boundary between one part of the cell and another.

  3. Membrane protein - Wikipedia

    en.wikipedia.org/wiki/Membrane_protein

    Peripheral membrane proteins are temporarily attached either to the lipid bilayer or to integral proteins by a combination of hydrophobic, electrostatic, and other non-covalent interactions. Peripheral proteins dissociate following treatment with a polar reagent, such as a solution with an elevated pH or high salt concentrations. [citation needed]

  4. Wikipedia:Featured picture candidates/Cell membrane ...

    en.wikipedia.org/wiki/Wikipedia:Featured_picture...

    Response to technical concerns. Cholesterol can bind to proteins covalently (e.g. hedgehog protein). Each leaflet can have a different glycolipid composition, as well as phospholipid composition (see Flippase). A large fraction of membrane proteins are glycoproteins, globular or no. Agree re the helix looking clunky, but overall it looks ...

  5. Peripheral membrane protein - Wikipedia

    en.wikipedia.org/wiki/Peripheral_membrane_protein

    The regulatory protein subunits of many ion channels and transmembrane receptors, for example, may be defined as peripheral membrane proteins. In contrast to integral membrane proteins, peripheral membrane proteins tend to collect in the water-soluble component, or fraction, of all the proteins extracted during a protein purification procedure.

  6. Lipid-anchored protein - Wikipedia

    en.wikipedia.org/wiki/Lipid-anchored_protein

    Lipid-anchored proteins (also known as lipid-linked proteins) are proteins located on the surface of the cell membrane [of what?] that are covalently attached to lipids embedded within the cell membrane. These proteins insert and assume a place in the bilayer structure of the membrane alongside the similar fatty acid tails. The lipid-anchored ...

  7. Threading (protein sequence) - Wikipedia

    en.wikipedia.org/wiki/Threading_(protein_sequence)

    After the best-fit template is selected, the structural model of the sequence is built based on the alignment with the chosen template. Protein threading is based on two basic observations: that the number of different folds in nature is fairly small (approximately 1300); and that 90% of the new structures submitted to the PDB in the past three ...

  8. Cell adhesion molecule - Wikipedia

    en.wikipedia.org/wiki/Cell_adhesion_molecule

    Cell adhesion molecules (CAMs) are a subset of cell surface proteins [1] that are involved in the binding of cells with other cells or with the extracellular matrix (ECM), in a process called cell adhesion. [2] In essence, CAMs help cells stick to each other and to their surroundings.

  9. Ion channel - Wikipedia

    en.wikipedia.org/wiki/Ion_channel

    Ion channels are integral membrane proteins, typically formed as assemblies of several individual proteins. Such "multi-subunit" assemblies usually involve a circular arrangement of identical or homologous proteins closely packed around a water-filled pore through the plane of the membrane or lipid bilayer.

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