Article
Maurotoxin versus Pi1/HsTx1 scorpion toxins. Toward new insights in the understanding of their distinct disulfide bridge patterns.
The Journal of biological chemistry - 15 Dec 2000
Fajloun Z, Mosbah A, Carlier E, Mansuelle P, Sandoz G, Fathallah M, di Luccio E, Devaux C, Rochat H, Darbon H, De Waard M, Sabatier J M
Abstract excerpt
Maurotoxin (MTX) is a scorpion toxin acting on several K(+) channel subtypes. It is a 34-residue peptide cross-linked by four disulfide bridges that are in an "uncommon" arrangement of the type C1-C5, C2-C6, C3-C4, and C7-C8 (versus C1-C5, C2-C6, C3-C7, and C4-C8 for Pi1 or HsTx1, two MTX-related scorpion toxins). We report here that a single mutation in MTX, in either position 15 or 33, resulted in a shift from...
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