Biochemistry Department;
Ohio State University;
Columbus;
USA;
Department of Cell and Developmental Biology;
University of North Carolina;
Chapel Hill;
USA;
Laboratorio de Biología Molecular y Biotecnología;
Facultad de Medicina;
Universidad de Santander (UDES);
Campus Univer- sitario;
Bucaramanga;
Colombia;
Disulfide; Bonds; CD; Spectra; Cry3Aa; Site; Directed; Mutagenesis;