What is "iberiotoxin"

n. (context biochemistry English) An ion channel toxin obtained from the scorpion ''Buthus tamulus''

The amino acid sequence of Iberiotoxin

Pyr - Phe - Thr - Asp - Val - Asp - Cys - Ser - Val - Ser - Lys - Glu - Cys - Trp - Ser - Val - Cys - Lys - Asp - Leu - Phe - Gly - Val - Asp - Arg - Gly - Lys - Cys - Met - Gly - Lys - Lys - Cys - Arg - Cys - Tyr - Gln - OH

Disulfide bridges: Cys7 - Cys28, Cys13 - Cys33, Cys17 - Cys35

Iberiotoxin (IbTX) is an ion channel toxin purified from the Eastern Indian red scorpion Buthus tamulus. Iberiotoxin selectively inhibits the current through large-conductance calcium-activated potassium channels.