Dictionary > Chitobiose

Chitobiose

Definition
noun
A dimer comprised of two molecules of glucosamine units joined by β-1,4 bonds, and produced by organisms with chitin in their outer covering such as spiders and insects
Supplement
Chitobiose is a dimer comprised of glucosamine units linked by β-1,4 bonds. It is the repeating unit in chitin. Chitin is a polysaccharide. In particular, it is a polymer of nitrogen-containing polysaccharide (C8H13O5N)n. Animals that produce chitin used it as a tough, protective outer covering. Examples of animals with chitin are the arthropods in their exoskeletons, some arachnids in their hard outer covering, mollusks in their radula, and cephalopods in their beaks. Some fungi species have chitin in their cell walls. The process in which chitin is hydrolyzed into chitobiose with the help of an enzyme is referred to as chitinolysis. Chitinases are the hydrolytic enzymes that break down the glycosidic bonds in chitin.
Chitobiose is a disaccharide amino sugar. Its structure is similar to cellobiose. The difference is the presence of N-acetylamino group on C-2 of chitobiose instead of a hydroxyl group on cellobiose.1
Chitobiose should not be confused with chitobiase, which is the enzyme that hydrolyzes chitobiose.
See also:

Reference(s):

1 Chitobiose. (n.d.) Farlex Partner Medical Dictionary. (2012). Retrieved from https://medical-dictionary.thefreedictionary.com/chitobiose


You will also like...

Peppered moth ("Biston betularia") melanic and light form
Examples of Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

Schematic diagram of DNA replication
DNA Structure & DNA Replication

DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

Lake Wakatipu, New Zealand
New Zealand’s Unique Geographical History

Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..

DNA molecule
Genetic Control – On and Off Genes

Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

Carbohydrates, fats and proteins - dietary sources
A Balanced Diet – Carbohydrates and Fat

Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

complete-dominance
Dominance

This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..

Related Articles...

No related articles found

See all Related Topics