Dictionary > Mannose

Mannose

Definition
noun
A hexoaldose monosaccharide with a chemical formula of C6H12O6, and an isomer of glucose from manna, the ash Fraxinus ornus, and related plants
Supplement
Monosaccharides are the simplest form of carbohydrates. They may be classified based on the number of constituent carbon atoms. For instance, hexose is a monosaccharide with six carbon atoms. They may also be classified based on the functional group present: aldose and ketose. Mannose is a hexose monosaccharide that belongs to the group of aldoses. As an aldose, mannose has an aldehyde as a functional group.
Mannose is a stereoisomer of glucose. In particular, it is a C-2 epimer of glucose. It occurs in two ring forms: the pyranose form (i.e. a six-membered ring that consists of five carbon atoms and one oxygen atom) and the furanose form (i.e. a five-membered ring consisting of four carbon atoms and one oxygen atom).
In human metabolism, mannose is involved in the glycosylation of certain proteins.
Glucose can be turned into mannose through the Lobry-de Bruyn-van Ekenstein transformation. Another way to produce mannose is by the oxidation of mannitol.
Mannose from the digestion of polysaccharides and glycoproteins is phosphorylated by the enzyme hexokinase. The resulting mannose-6-phosphate can enter the glycolysis when it is converted to fructose-6-phosphate by the enzyme phosphomannose isomerase.
Chemical formula:

  • C6H12O6

Synonym(s):

  • carubinose
  • seminose
  • See also:

    Related term(s):

  • Dolichyl-phosphate-mannose – protein mannosyltrans
  • Mannose-1-phosphate guanylyltransferase
  • Mannose-6-phosphate


  • You will also like...

    A sperm cell fertilizing an ovum
    Human Reproduction and Fertilization

    For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    primitive arthropods
    Arthropods

    The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

    Oligodendrocyte and Schwann cell
    The Central Nervous System

    Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

    An artist's depiction of the origin of amphibians
    Amphibians & Early Reptiles

    Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

    New Zealand - Biodiversity fauna
    New Zealand’s Biodiversity

    Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..

    Related Articles...

    No related articles found

    See all Related Topics