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  2. List of proteins - Wikipedia

    en.wikipedia.org/wiki/List_of_proteins

    The human genome, categorized by function of each gene product, given both as number of genes and as percentage of all genes. [7] Proteins may also be classified based on their cellular function. A widely used classification is PANTHER (protein analysis through evolutionary relationships) classification system. [7]

  3. Protein - Wikipedia

    en.wikipedia.org/wiki/Protein

    Proteinprotein interactions also regulate enzymatic activity, control progression through the cell cycle, and allow the assembly of large protein complexes that carry out many closely related reactions with a common biological function. Proteins can also bind to, or even be integrated into, cell membranes.

  4. Protein structure - Wikipedia

    en.wikipedia.org/wiki/Protein_structure

    Protein dynamics and conformational changes allow proteins to function as nanoscale biological machines within cells, often in the form of multi-protein complexes. [14] Examples include motor proteins, such as myosin, which is responsible for muscle contraction, kinesin, which moves cargo inside cells away from the nucleus along microtubules ...

  5. Membrane protein - Wikipedia

    en.wikipedia.org/wiki/Membrane_protein

    [13] [16] Detergents can be used to render membrane proteins water-soluble, but these can also alter protein structure and function. [13] Making membrane proteins water-soluble can also be achieved through engineering the protein sequence, replacing selected hydrophobic amino acids with hydrophilic ones, taking great care to maintain secondary ...

  6. Major intrinsic proteins - Wikipedia

    en.wikipedia.org/wiki/Major_intrinsic_proteins

    These channel proteins function in transporting water, small carbohydrates (e.g., glycerol), urea, NH 3, CO 2, H 2 O 2 and ions by energy-independent mechanisms. For example, the glycerol channel, FPS1p of Saccharomyces cerevisiae mediates uptake of arsenite and antimonite. [6]

  7. Plasma protein - Wikipedia

    en.wikipedia.org/wiki/Plasma_protein

    Plasma proteins, sometimes referred to as blood proteins, are proteins present in blood plasma. They serve many different functions, including transport of lipids, hormones, vitamins and minerals in activity and functioning of the immune system. Other blood proteins act as enzymes, complement components, protease inhibitors or kinin precursors.

  8. Protein (nutrient) - Wikipedia

    en.wikipedia.org/wiki/Protein_(nutrient)

    Proteins are essential nutrients for the human body. [1] They are one of the building blocks of body tissue and can also serve as a fuel source. As a fuel, proteins provide as much energy density as carbohydrates: 17 kJ (4 kcal) per gram; in contrast, lipids provide 37 kJ (9 kcal) per gram.

  9. Hemoprotein - Wikipedia

    en.wikipedia.org/wiki/Hemoprotein

    Hemoglobin and myoglobin are examples of hemeproteins that respectively transport and store of oxygen in mammals and in some fish. [9] Hemoglobin is a quaternary protein that occurs in the red blood cell, whereas, myoglobin is a tertiary protein found in the muscle cells of mammals.