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An antitoxin is an antibody with the ability to neutralize a specific toxin. Antitoxins are produced by certain animals , plants , and bacteria in response to toxin exposure. Although they are most effective in neutralizing toxins, they can also kill bacteria and other microorganisms.
Type II toxin-antitoxin systems are generally better-understood than type I. [39] In this system a labile proteic antitoxin tightly binds and inhibits the activity of a stable toxin. [10] The largest family of type II toxin-antitoxin systems is vapBC , [ 53 ] which has been found through bioinformatics searches to represent between 37 and 42% ...
The target of CcdB is the GyrA subunit of DNA gyrase, an essential type II topoisomerase in Escherichia coli. [3] Gyrase alters DNA topology by effecting a transient double-strand break in the DNA backbone, passing the double helix through the gate and resealing the gaps.
Diphtheria antitoxin (DAT) is a medication made up of antibodies used in the treatment of diphtheria. [1] [2] It is no longer recommended for prevention of diphtheria. [2] [3] It is administered through injection into a vein or muscle. [2] Side effects are common. [3] They include serum sickness and allergic reactions including anaphylaxis. [2]
Proteic addiction modules use proteins as toxins and antitoxins, as opposed to RNA or other methods. The known proteic addiction modules all have similar shared characteristics, including placement of the antitoxin gene relative to the toxin gene, method of toxin neutralization by the antitoxin, and autoregulation of the addiction module by the antitoxin or toxin:antitoxin complex.
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The parDE type II toxin-antitoxin system is one example of the bacterial toxin-antitoxin (TA) systems that encode two proteins, one a potent inhibitor of cell proliferation (toxin) and the other its specific antidote (antitoxin).
Jim Vintage 1895 vial of diphtheria antitoxin. On October 2, 1901, a former milk wagon horse named Jim showed signs that he had contracted tetanus and was euthanized. He was used to produce serum containing diphtheria antitoxin (antibodies against diphtheria toxin). Jim produced over 30 US quarts (7.5 US gallons; 28.5 litres) of diphtheria ...