Etymology: chêmeia (gr.) = chemistry, repellent (lat.) = inspiring aversion, resistant or impervious to something
Inorganic or organic substances possessing chemotaxis modulator, negative effect in motile cells. Effect of chemorepellent is elicited via described or hypothetic chemotaxis receptors, the chemorepellent moiety of a ligand is target cell specific and concentration dependent. Responses to chemorepellents result axial swimming and they are considered as a basic motile phenomena in bacteria. The most frequently investigated chemorepellents are inorganic salts, amino acids and some chemokines. Chemoattractants are substances expressing adverse migratory effect.
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