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  2. Ether lipid - Wikipedia

    en.wikipedia.org/wiki/Ether_lipid

    The cell membrane of archaea consist mostly of ether phospholipids. These lipids have a flipped chirality compared to bacterial and eukaryotic membranes, a conundrum known as the " lipid divide ". The "tail" groups are also not simply n-alkyl groups, but highly methylated chains made up of saturated isoprenoid units (e.g. phytanyl ).

  3. Phospholipid - Wikipedia

    en.wikipedia.org/wiki/Phospholipid

    These specific properties allow phospholipids to play an important role in the cell membrane. Their movement can be described by the fluid mosaic model , which describes the membrane as a mosaic of lipid molecules that act as a solvent for all the substances and proteins within it, so proteins and lipid molecules are then free to diffuse ...

  4. Glycerophospholipid - Wikipedia

    en.wikipedia.org/wiki/Glycerophospholipid

    By contrast, the exoplasmic side (the side on the exterior of the cell) consists mainly of phosphatidylcholine and sphingomyelin, a type of sphingolipid. Each glycerophospholipid molecule consists of a small polar head group and two long hydrophobic chains. In the cell membrane, the two layers of phospholipids are arranged as follows:

  5. Membrane lipid - Wikipedia

    en.wikipedia.org/wiki/Membrane_lipid

    Membrane lipids are a group of compounds (structurally similar to fats and oils) which form the lipid bilayer of the cell membrane. The three major classes of membrane lipids are phospholipids, glycolipids, and cholesterol. Lipids are amphiphilic: they have one end that is soluble in water ('polar') and an ending that is soluble in fat ...

  6. Lipid - Wikipedia

    en.wikipedia.org/wiki/Lipid

    Eukaryotic cells feature the compartmentalized membrane-bound organelles that carry out different biological functions. The glycerophospholipids are the main structural component of biological membranes , as the cellular plasma membrane and the intracellular membranes of organelles; in animal cells, the plasma membrane physically separates the ...

  7. Phosphatidylethanolamine - Wikipedia

    en.wikipedia.org/wiki/Phosphatidylethanolamine

    In human physiology, they are found particularly in nervous tissue such as the white matter of brain, nerves, neural tissue, and in spinal cord, where they make up 45% of all phospholipids. [2] Phosphatidylethanolamines play a role in membrane fusion and in disassembly of the contractile ring during cytokinesis in cell division. [3]

  8. Phosphatidylserine - Wikipedia

    en.wikipedia.org/wiki/Phosphatidylserine

    Phosphatidylserine (PS) is the major acidic phospholipid class that accounts for 13–15% of the phospholipids in the human cerebral cortex. [7] In the plasma membrane, PS is localized exclusively in the cytoplasmic leaflet where it forms part of protein docking sites necessary for the activation of several key signaling pathways.

  9. Lipid bilayer - Wikipedia

    en.wikipedia.org/wiki/Lipid_bilayer

    Prokaryotes have only one lipid bilayer - the cell membrane (also known as the plasma membrane). Many prokaryotes also have a cell wall, but the cell wall is composed of proteins or long chain carbohydrates, not lipids. In contrast, eukaryotes have a range of organelles including the nucleus, mitochondria, lysosomes and endoplasmic reticulum