SUCROSE PHOSPHATE SYNTHETASE (SPS), A PREPARATION METHOD AND cDNA THEREFOR, AND USE OF THE cDNA FOR MODIFYING SPS EXPRESSION IN PLANT CELLS

摘要

Proteins having sucrose phosphate synthetase (SPS) activity and comprising in particular at least one peptide whose amino acid sequence is as follows: ThvTrpIleLys, TyrValValGluLeuAlaArg, SerMetProProIleTrpAlaGluValMetArg, LeuArgProAspGlnAspTyrLeuMetHisIleSerHisArg, TrpSerHisAspGlyAlaArg; a method for preparing them; cell lines obtained thereby; monoclonal antibodies specific for said pr17eins; said proteins' cDNA; the use of said cDNA for modifying the expression and control of said proteins in plants; expression vectors containing said cDNA; and plants and seeds obtained by means of said expression vectors, are described.