Complex sentence: Hemitoxin (HTX; α-KTx6.15) is a 35-mer basic peptide from the venom of the Iranian scorpion "Hemiscorpius lepturus", which reversibly blocks K v 1.1, K v 1.2 and K v 1.3 voltage-gated K + channels.
Split into simpler sentences: Hemitoxin (HTX) is a 35-mer basic peptide from the venom of the Iranian scorpion "Hemiscorpius lepturus". Acting as a neurotoxin it reversibly blocks K v 1.1, K v 1.2 and K v 1.3 voltage-gated K + channels.