Fecha de publicación: -- Fuente: WIPO "tomato" The present invention provides a Glycolyl-CoA Carboxylase (GCC), wherein said GCC is characterized in that: it comprises an amino acid sequence having at least 60% sequence identity to SEQ ID NO: 1, and it has one or more amino acid substitutions, deletions or insertions at a position selected from the group consisting of positions 20 and 100 in the amino acid sequence shown in SEQ ID NO: 1 or at a position corresponding to any of these positions, preferably wherein the GCC has an improved activity over a reference GCC, preferably wherein the reference GCC comprises the amino acid sequence of SEQ ID NO: 1.