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Found Affinity 4 times.

Displaying results 1 to 10.

1. 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.

2. Affinity adsorbent
A support matrix coated with an affinity ligand that is able to selectively absorb substances such as enzyme s, protein s, and antibodies.

3. Affinity chromatography
A technique of analytical chemistry used to separate and purify a biological molecule from a mixture, based on the attraction of the molecule of interest to a particular ligand which has been previously attached to a solid, inert substance. The mixture is passed through a column containing the ligand attached to the stationary substance, so that the molecule of interest stays within the column while the rest of the mixture continues through to the end. Then, a different chemical is flushed through the column to detach the molecule from the ligand and bring it out separately from the rest of the mixture.

4. Affinity labeling
A method for tagging molecules, such as enzyme s, so that they can be more easily detected and studied. The method works by substituting a synthetic substance which is similar to the substance that the enzyme normally bonds with.

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