[1] Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Fisiol & Biofis, Nucleo Neurociencias, BR-31270901 Belo Horizonte, MG, Brazil
[2] Minist Educ Brazil, CAPES Fdn, Programa Pos Grad Ciencias Biol Fisiol Farmacol, BR-70040020 Brasilia, DF, Brazil
[3] Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Patol, BR-31270901 Belo Horizonte, MG, Brazil
[4] Univ Fed Sao Paulo, Dept Biofis, BR-04023062 Sao Paulo, Brazil
[5] Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Bioquim & Imunol, Lab Venenos & Toxinas Anim, BR-31270901 Belo Horizonte, MG, Brazil
[6] Univ Miami, Miller Sch Med, Miami Project Cure Paralysis, Miami, FL 33136 USA
[7] La Trobe Univ, Dept Biochem, Bundoora, Vic 3086, Australia