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Encyclopedia > Secondary metabolism
Streptomycin, an important antibiotic drug produced by Streptomyces bacteria

Secondary metabolism (also called special metabolism) is a term for pathways and products of metabolism that are not absolutely required for the survival of the organism. Examples of the products include antibiotics and pigments. To distinguish non-secondary ("ordinary") metabolism, the term basic metabolism is sometimes used. Secondary metabolites are produced by microbes, plants and animals, but not by all of them. Image File history File links Streptomycin. ... Image File history File links Streptomycin. ... Streptomycin is an antibiotic drug, the first of a class of drugs called aminoglycosides to be discovered, and was the first antibiotic remedy for tuberculosis. ... Staphylococcus aureus - Antibiotics test plate. ... Streptomyces is a genus of Actinobacteria. ... A few of the metabolic pathways in a cell. ... This article or section does not cite any references or sources. ... An antibiotic is a drug that kills or slows the growth of bacteria. ... Natural Ultramarine pigment in powdered form. ... A microorganism or microbe is an organism that is so small that it is microscopic (invisible to the naked eye). ...

Contents

Induction of secondary metabolism

The induction of secondary metabolism is linked to particular environmental conditions or developmental stages. For example, when grown in a nutrient-rich medium, most bacteria employ almost solely basic metabolism in order to grow and reproduce. However, when nutrients are depleted, they start producing an array of secondary metabolites in order to promote survival.


Plants produce secondary metabolites as a response to adverse environmental conditions or in particular developmental stages. For example, exposure to UV radiation induces the biosynthesis of UV-absorbing compounds.


Important secondary metabolites

Staphylococcus aureus - Antibiotics test plate. ... Streptomycin is an antibiotic drug, the first of a class of drugs called aminoglycosides to be discovered, and was the first antibiotic remedy for tuberculosis. ... Penicillin nucleus Penicillin refers to a group of β-lactam antibiotics used in the treatment of bacterial infections caused by susceptible, usually Gram-positive, organisms. ... Natural Ultramarine pigment in powdered form. ... Delphinidin Delphinidin is an anthocyanin, and a primary plant pigment. ...

See also

Secondary metabolites are those chemical compounds in organisms that are not directly involved in the normal growth, development or reproduction of organisms. ... A few of the metabolic pathways in a cell. ...

External links

  • Secondary metabolism in plants

References


  Results from FactBites:
 
Secondary metabolism (571 words)
Secondary metabolites are molecules that are not necessary for the growth and reproduction of a plant, but may serve some role in herbivore deterrence due to astringency or they may act as phytoalexins, killing bacteria that the plant recognizes as a threat.
Secondary compounds are often involved in key interactions between plants and their abiotic and biotic environments that influence them (Facchini et al., 2000).
The first stage in forming a secondary metabolite involves the formation of a branch-point enzyme, which directs a certain amount of the primary metabolism into secondary metabolism (Edwards and Gatehouse, 1999).
Chem4Kids.com: Biochemistry: Metabolism (278 words)
Metabolism is such a big word to explain a simple idea.
Metabolism is the total of all of the chemical reactions an organism needs to survive.
It's metabolism and the process of glycolysis that takes that energy out of the sugar related molecules.
  More results at FactBites »


 

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