Regioselective Modification of Lysine's Amino Groups by Proteases.
作者:Hiroshi KITAGUCHI、Mitsunori ONO、Isamu ITOH、Alexander M. KLIBANOV
DOI:10.1271/bbb1961.55.3067
日期:——
The regioselectivity of six serine proteases for the amino groups of lysine was investigated. α-Chymotrypsin showed a preference for the α-amino group, although the selectivity can be varied 10-fold depending on the reaction medium. Subtilisin Carlsberg and other bacterial proteases were highly specific for the ε-amino group, regardless of the reaction medium: they were used as catalysts for the preparative synthesis of isopeptides in anhydrous tert-amyl alcohol.