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Found Substrate 71 times.

Displaying results 1 to 10.

1. Active site (binding site)
A specific region of an enzyme where a substrate binds and catalysis takes place.

2. Adsorption fermentation (extractive fermentation)
A fermentation technique in which products of the fermentation are removed from the broth by adsorption onto materials such as carbon or polymers. Generally, the preferred method of doing this is to circulate the fermenting broth through the adsorbent substrate , because the fermentation products are often toxic to the microbes.

3. Affinity
Attraction between particles or substances to other particles or substances. In biological and biochemical fields, this term generally is a measure of the attraction of one biological molecule toward another molecule (which can be organic or inorganic), either to alter it, destroy it, or form a compound with it. Examples are enzyme s and their substrate s, or antibodies and their antigen s.

4. Allosteric
Used to describe some protein , especially an enzyme , in which a compound combines with a site on the protein other than the active site . This may result in a conformational change at the active site so that the normal substrate cannot bind to it. The allosteric property is useful in the regulation of enzyme activity.

5. Amphibolic
A metabolic pathway that can both create and destroy metabolite s (that is, it is both anabolic and catabolic ). Such an intermediate pathway allows using the breakdown products from one pathway as the substrate s, or ingredients, for a compound in another pathway.

6. Anchorage dependence
The phenomena that many mammalian cells won't culture properly unless they're grown in single layers of cells anchored to glass or plastic substrate s. This makes it difficult to culture such cells on a large scale. Only transformed cell s, hybridoma s and hematopoietic cells are easily grown in suspension cultures, which are preferred because they're easier to maintain.

7. Animal cell culture
Mammalian cells are fragile and harder to grow than other cell types, but their large-scale culturing is an economic boon because it allows for the production of protein s that are otherwise difficult/expensive/unethical to extract from living organisms. There are two basic ways of culturing animal cells: * The cells are immobilized on a substrate and then perfused with culture medium ; * The cells are in a free suspension which is very gently mixed and aerated.

8. Aufwuchs
Complex assemblage of plants and animals living on the surface of a submerged mineral or organic substrate. It includes diatoms, blue-green algae , protozoa , rotifers and nematodes.

9. Avidity
The strength of a bond between an antibody and its antigen . Similar to affinity among enzyme s and their substrate s.

10. Bathyphyll
A leaf at the base of a stem with the function of attachment to a substrate.

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