AB toxin

AB toxin
Multi-subunit toxin in which there are two major components, an active (A) portion and a portion that is involved in binding (B) to the target cell. The A portion can be effective in the absence of the B subunit(s) if introduced directly into the cytoplasm. In the well-known examples, the A subunit has ADP-ribosylating activity. See cholera toxin, diphtheria toxin, pertussis toxin.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

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  • Toxin (disambiguation) — Toxin can have several meanings that relate to toxin, or poison: * Toxin (novel) is a 1998 novel by Robin Cook * Toxin (comics), a fictional character by Marvel Comics universe, grandson of Venom and ally of Spider Man.Distinguish from* Tocsin …   Wikipedia

  • toxin- — ⇒TOXIN(I) , TOXIN(O) , (TOXIN , TOXINI , TOXINO )élém. formants Élém. tiré du subst. toxine, entrant dans la constr. de termes sav. en méd. et biol.; le 2e élém. est gén. un élém. non autonome désignant l orig. de la formation ou le type d action …   Encyclopédie Universelle

  • toxin-antitoxin — n a mixture of toxin and antitoxin used esp. formerly in immunizing against a disease (as diphtheria) for which they are specific * * * (TA) tox·in an·ti·tox·in (TA) (tok″sin anґtĭ tok″sin) a nearly neutral mixture of diphtheria… …   Medical dictionary

  • toxin-antitoxin — [täk΄sin an′ti täk΄sin] n. a mixture of toxin and antitoxin formerly used for producing active immunity against a specific disease, esp. diphtheria: now superseded by toxoids …   English World dictionary

  • Toxin — Tox in, Toxine Tox ine, n. [Gr. toxiko n. See {Toxic}. ] A poisonous product formed by an organism, such as a pathogenic bacterium, a plant or an animal, usually having a high molecular weight, often a protein or a polysaccharide, but… …   The Collaborative International Dictionary of English

  • toxin — toxin. См. токсин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Toxin — Toxin,das:⇨Gift(1) …   Das Wörterbuch der Synonyme

  • toxin — organic poison, especially one produced by bacteria in an animal body, 1886, from TOXIC (Cf. toxic) + IN (Cf. in) (2) …   Etymology dictionary

  • toxin — *poison, venom, virus, bane …   New Dictionary of Synonyms

  • toxin — [n] poison blight, cancer, contagion, contamination, germ, infection, noxious substance, poisonous substance, toxicant, toxoid, venom, virus; concepts 307,475,674,675 …   New thesaurus

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