1. Department of Biochemistry and Technological Chemistry, Institute of Chemistry, UNESP, Araraquara, São Paulo 14800-900, Brazil, Department of Biophysics, Universidade Federal de São Paulo, Rua 3 de Maio 100, CEP 04044-020 São Paulo, Brazil, and Department of Biochemistry, Institute of Chemistry, Universidade de São Paulo, CP 26077, 05513-970 São Paulo, SP, Brazil