Toxin

A toxin (from Ancient Greek: τοξικόν toxikon) is a poisonous substance produced within living cells or organisms; man-made substances created by artificial processes are thus excluded. The term was first used by organic chemist Ludwig Brieger (1849–1919).

For a toxic substance not produced within living organisms, "toxicant" and "toxics" are also sometimes used..

Toxins can be small molecules, peptides, or proteins that are capable of causing disease on contact with or absorption by body tissues interacting with biological macromolecules such as enzymes or cellular receptors. Toxins vary greatly in their severity, ranging from usually minor and acute (as in a bee sting) to almost immediately deadly (as in botulinum toxin).

Read more about Toxin:  Terminology, Biotoxins, Environmental Toxins, Non-technical Usage

Other articles related to "toxin":

Staphylococcus Aureus Delta Toxin
... Staphylococcus aureus delta toxin is a toxin produced by Staphylococcus aureus ... It has a wide spectrum of cytolytic activity ...
Toxin - Non-technical Usage
... When used non-technically, the term "toxin" is often applied to any toxic substance ... Toxic substances not directly of biological origin are also termed poisons and many non-technical and lifestyle journalists follow this usage to refer to toxic substances in general ...
Staphylococcus Aureus Alpha Toxin
... Alpha-toxin, also known as alpha-hemolysin (Hla), is the major cytotoxic agent released by bacterium Staphylococcus aureus and the first identified member of the pore forming beta-ba ... This toxin consists mostly of beta-sheets (68%) with only about 10% alpha-helices ... This structure allows the toxin to perform its major function, development of pores in the cellular membrane, eventually causing cell death ...
Stichodactyla Toxin
... Stichodactyla toxin (ShK) is a peptide toxin that blocks the voltage-gated potassium channels Kv1.1, Kv1.3, Kv1.6, Kv3.2 and KCa3.1 ...
Staphylococcus Aureus Beta Toxin
... Staphylococcus aureus beta toxin is a toxin produced by Staphylococcus aureus ... The beta toxin exhibits maximum activity at 10°C, at 37°C (normal body temperature) seems to be inactive ...