Purification and characterization of Ts15, the first member of a new 'alfa'-KTX subfamily from the venom of the Brazilian scorpion Tityus serrulatus - Cologna, Camila Takeno; Tytgat, Jan; Peigneur, Steve; Rosa, José César; Araujo, Heloisa Sobreiro Selistre de; Varanda, Wamberto Antonio; Arantes, Eliane Candiani (Toxicon, 2011)