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Tityustoxin-1, TsTX-I is the most toxic protein among the neurotoxins in this venom, with an intravenous and intracisternal LD 50 (mouse) of 76 ± 9 and 1.1 ± 0.3 μg/kg, respectively. The identification of TsTX-I as a potent component of T. serrulatus venom characterized it as the major and main neurotoxin from this venom. [1]
The deathstalker is one of the most dangerous species of scorpions. [10] [11] Its venom is a powerful mixture of neurotoxins, with a low lethal dose. [12]While a sting from this scorpion is extraordinarily painful, it normally would not kill a healthy adult human.
It was the second purified toxin obtained from the genus Centruroides after neurotoxin II [8] and the first short peptide from scorpion venom to be reported in the literature. [9] The name for noxiustoxin was first proposed in 1982, [ 2 ] before which it was known as toxin II-11 [ 9 ]
In another context, the scorpion portrays human sexuality. [10] Scorpions are used in folk medicine in South Asia, especially in antidotes for scorpion stings. [10] One of the earliest occurrences of the scorpion in culture is its inclusion, as Scorpio, in the 12 signs of the Zodiac by Babylonian astronomers during the Chaldean period. [12]
Scorpion toxins are proteins found in the venom of scorpions.Their toxic effect may be mammal- or insect-specific and acts by binding with varying degrees of specificity to members of the Voltage-gated ion channel superfamily; specifically, voltage-gated sodium channels, voltage-gated potassium channels, [3] and Transient Receptor Potential (TRP) channels.
The venom from Leiurus abdullahbayrami can be very toxic. The venom of this species is one of the most potent venoms of the Turkish scorpions, and it provokes severe symptoms in the victims. Proteins make up half of the dry weight of the crude venom. The venom in this species stimulates voltage-gated sodium and potassium channels. [11]
Parabuthus transvaalicus is a dangerous, medically significant scorpion, which can both sting and spray its kurtoxin venom. [2] The first droplet of venom differs from the rest, and is referred to as "pre-venom". [4] A further potassium channel inhibitor, parabutoxin, has been isolated from the venom of P. transvaalicus. [5]
LmKTT-1a (SdPI-2, δ-KTx2.1) is a bifunctional Kunitz-type toxin belonging to the ẟ-KTx subfamily, which can be found in the venom of Lychas mucronatus (the Chinese swimming scorpion). As a bifunctional toxin, it both inhibits trypsin activity and blocks Kv1 channels with a weak selectivity towards Kv1.3 channels.