Enzymatic peptide fragment condensation: structural studies of trypsin in mixtures of trifluoroethanol and dimethylformamide - Bemquerer, Marcelo Porto; Liria, Cleber Wanderlei; Kitagawa, K; Faljoni-Alario, Adelaide; Miranda, Maria Terêsa Machini de; Tominaga, Mineko (Peptide 1996, 1998)