MODULATION OF COFFEE FLAVOUR PRECURSOR LEVELS IN GREEN COFFEE GRAINS

摘要

The present invention relates to isolated polynucleotides encoding cysteine proteinases; cysteine proteinase inhibitors; and aspartic endoproteinases.Th e invention also relates to a transformed host cell, preferably a plant cell, in which over- or under- expression of these polynucleotides result in altered levels of coffee flavour precursor levels, specifically, amino group- containing molecules such as amino acids, peptides and proteins, in green coffee grains.