| Streptococcus viridans | A name applied not to a distinct species but rather to the group of alpha-haemolytic streptococci as a whole; viridans streptococci have been isolated from the mouth and intestines of humans, the intestines of horses, the milk and faeces of cows, milk and milk products, and the sputum and lungs in cases of primary atypical pneumonia. (05 Mar 2000) |
|---|---|
| Streptococcus zooepidemicus | Former name for Streptococcus equi zooepidemicus. (05 Mar 2000) |
| animal toxin | <pharmacology> Any poisonous substance (including but not limited to venom) produced by an animal. (11 May 1997) |
| anthrax toxin | A culture filtrate of Bacillus anthracis containing an exotoxin with at least three different antigenically distinct components: oedema factor, lethal factor, and protective antigen. Synonym: Bacillus anthracis toxin. (05 Mar 2000) |
| Bacillus anthracis toxin | A culture filtrate of Bacillus anthracis containing an exotoxin with at least three different antigenically distinct components: oedema factor, lethal factor, and protective antigen. Synonym: Bacillus anthracis toxin. (05 Mar 2000) |
| bacterial toxin | Any intracellular or extracellular toxin formed in or elaborated by bacterial cells. (05 Mar 2000) |
| bee toxin | The toxin delivered by a bee sting; contains three active principles: biogenic amines, active peptides, and certain hydrolytic enzymes. (05 Mar 2000) |
| botulinum toxin | <protein> Neurotoxin (50 kD, 7 distinct serotypes) produced by certain strains of Clostridium botulinum. The bacterium produces the toxin as a complex with a haemagglutinin that prevents toxin inactivation in the gut. Proteolysis in the body results in cleavage into two fragments A and B. B binds to gangliosides and may stimulate the endocytosis of fragment A. See: synaptobrevin, tetanus toxin. (18 Nov 1997) |
| botulinum toxin type a | <chemical> A neurotoxin produced by clostridium botulinum. When consumed in contaminated food it can cause paralysis and death. In its purified form, it has been used in the treatment of blepharospasm and strabismus. Pharmacological action: neuromuscular agents. (12 Dec 1998) |
| botulinus toxin | A potent neurotoxin from Clostridium botulinum. Synonym: botulin, botulismotoxin. (05 Mar 2000) |
| botulism toxin | <protein> A toxic byproduct of Clostridium Botulinum that is responsible for the food-borne illness known as botulism. (27 Sep 1997) |
| gamma toxin | <microbiology> Complex toxin (33.4 kD) produced by Staphylococcus aureus. Rabbit erythrocytes are particularly sensitive to lysis by the toxin, but the mechanism is unknown. (18 Nov 1997) |
| paralytic shellfish poisoning toxin carbamoylase | <enzyme> Hydrolytic enzyme from shellfish converts saxitoxin, neosaxitoxin, gonyautoxins 1 - 4 to the corresponding decarbamoyl toxins Registry number: EC 3.1.1.- Synonym: pcp toxin carbamoylase, saxitoxin carbamoylase (26 Jun 1999) |
| pertussis toxin | <protein> Protein complex (ca 117 kD). An A B toxin, the active subunit is a single polypeptide 28 kD), the binding subunit a pentamer (two heterodimers, 23 + 11.7 kD, 11.7 + 22 kD and a monomer (9.3 kD) that binds the heterodimers). The active subunit ADP ribosylates the _ subunit of the inhibitory GTP-binding protein (Gi). Crucial to the pathogenicity of Bordetella pertussis, the causative agent of whooping cough. (18 Nov 1997) |
| cholera toxin | <protein> A multimeric protein toxin from Cholera vibrio. The toxic A subunit activates adenyl cyclase irreversibly by ADP ribosylation of a Gs protein. The B subunit facilitates passage of the A subunit across the cell membrane. (18 Nov 1997) |