Abstract: Nucleic acid molecules encoding an alternansucrase are provided. Moreover, vectors, host cells and plant cells transformed by the herein-described nucleic acid molecules and plants containing them are provided. Furthermore, methods are described for preparing transgenic plants which synthesize the carbohydrate alternan, because of the insertion of nucleic acid molecules encoding an alternansucrase. Moreover, methods for preparing alternan and products resulting from them are provided.

Abstract: The present invention relates to DNA molecules encoding enzymes which are involved in the starch synthesis of plants. These enzymes represent two different isotypes of the soluble starch synthase as well as a starch granule-bound starch synthase. This invention furthermore relates to vectors, bacteria, as well as to plant cells transformed with the DNA molecules described and to plants regenerated from them. Furthermore, the invention relates to starch that can be isolated from plants having an increased or reduced activity of the proteins described.

Abstract: Nucleic acid molecules encoding debranching enzymes from maize Nucleic acid molecules are described, which encode debranching enzymes from maize, as well as transgenic plant cells and plants in which an amylopectin with modified properties is synthesized due to the expression of a debranching enzyme from maize or due to the inhibition of such an endogeneous debranching enzyme activity.

Abstract: The present invention relates to nucleic acid molecules encoding enzymes which are involved in the starch synthesis in plants. These enzymes are starch synthases from wheat. The invention further relates to vectors and host cells containing said nucleic acid molecules, in particular transformed plant cells and plants regenerated from these cells, which exhibit an increased or a reduced activity of the described starch synthases.

Abstract: Nucleic acid molecules are described which encode enzymes involved in the starch synthesis in plants. These enzymes are starch phosphorylases from maize. The invention further relates to vectors containing such nucleic acid molecules and to host cells transformed with the described nucleic acid molecules, in particular to transformed plant cells and to plants which may be regenerated therefrom and which exhibit an increased or reduced activity of the described proteins.

Abstract: The present invention relates to DNA sequences which, on the codogenic strand, code plant debranching enzymes whose transcripts formed in transgenic plants code new proteins with the enzymatic activity of debranching enzymes which in transgenic plants reduce the degree of branching of amylopectin starch. The invention also relates to DNA sequences which on the codogenic strand code plant debranching enzymes whose transcripts formed in transgenic plants prevent the synthesis of proteins with the enzymatic activity of debranching enzymes, which in transgenic plants increases the degree of branching of amylopectin starch, and also to recombinant plasmids on which these DNA sequences are localized and which can be introduced into plant cells and plants.

Abstract: The invention relates to DNA sequences coding for proteins having the enzymatic activity of an amylosucrase which allows the synthesis of linear &agr;-1,4 glucans from the substrate sucrose by bacteria, fungi and plants or in cell-free systems.

Abstract: Nucleic acid molecules are described encoding enzymes involved in the starch synthesis in plants. These enzymes are a novel isotype of soluble starch synthases from maize.

Abstract: Nucleic acid molecules are described which encode enzymes involved in the starch synthesis in plants. These enzymes are starch phosphorylases from maize. The invention further relates to vectors containing such nucleic acid molecules and to host cells transformed with the described nucleic acid molecules, in particular to transformed plant cells and to plants which may be regenerated therefrom and which exhibit an increased or reduced activity of the described proteins.

Abstract: Nucleic acid molecules are described encoding enzymes involved in the starch synthesis in plants. These enzymes are a novel isotype of soluble starch synthesis from maize. Furthermore, the invention relates to vectors containing such nucleic acid molecules and to host cells, which have been transformed with the nucleic acid molecules, in particular to transformed plant cells or plants regenerable therefrom, which exhibit an increased or reduced activity of the described proteins.

Abstract: The present invention relates to nucleic acid molecules encoding enzymes which are involved in the starch synthesis in plants. These enzymes are starch synthases from wheat. The invention further relates to vectors and host cells containing said nucleic acid molecules, in particular transformed plant cells and plants regenerated from these cells, which exhibit an increased or a reduced activity of the described starch synthases.

Abstract: Nucleic acid molecules encoding enzymes which participate in the starch synthesis in plants are described. These enzymes are a novel isotype of starch synthase.

Abstract: The invention relates to DNA sequences coding for proteins having the enzymatic activity of an amylosucrase which allows the synthesis of linear &agr;-1,4 glucans from the substrate sucrose by bacteria, fungi and plants or in cell-free systems. The invention furthermore describes plasmids and bacteria containing these DNA sequences as well as processes for the production of plants and microorganisms capable of intracellularly or extracellularly expressing a polypeptide having amylosucrase activity. The invention furthermore relates to the production of pure fructose using proteins exhibiting the enzymatic activity of amylosucrase.

Abstract: Nucleic acid molecules are described encoding a starch granule-bound protein as well as methods and recombinant DNA molecules for the production of transgenic plant cells and plants synthesizing a modified starch with modified viscosity properties and a modified phosphate content. Moreover, the plant cells and plants resulting from those methods as well as the starch obtainable therefrom are described.

Abstract: Nucleic acid molecules are described, which encode debranching enzymes from potato, as well as transgenic plant cells and plants in which an amylopectin with modified properties is synthesized due to the expression of a debranching enzyme from potato or due to the inhibition of such an endogeneous debranching enzyme activity.

Abstract: The invention describes recombinant DNA molecules that allow expression of a deregulated or unregulated fructose-1,6-bisphosphatase (FBPase) in plant cells. Such expression leads to an increase in the photosynthesis rate and biomass production in photosynthetically active cells. Furthermore, the invention describes transgenic plants that show an increased photosynthesis rate due to the expression of a deregulated or unregulated FBPase.

Abstract: Plasmids are described having DNA sequences that after insertion into the genome of the plants cause changes in the carbohydrate concentration and the carbohydrate composition in regenerated plants. These changes can be obtained from a sequence of a branching enzyme that is located on these plasmids. This branching enzyme alters the amylose/amylopectin ratio in starch of the plants, especially in commercially used plants.

Abstract: Nucleic acid molecules encoding enzymes which participate in the starch synthesis in plants are described. These enzymes are a novel isotype of starch synthase. Furthermore, the invention relates to vectors and host cells which were transformed with the described nucleic acid molecules, in particular to transformed plant cells and to plants which may be regenerated therefrom and which exhibit an increased or reduced activity of the described proteins.

Abstract: Nucleic acid molecules are described encoding a starch granule-bound protein as well as methods and recombinant DNA molecules for the production of transgenic plant cells and plants synthesizing a modified starch with modified viscosity properties and a modified phosphate content. Moreover, the plant cells and plants resulting from those methods as well as the starch obtainable therefrom are described.

Abstract: The present invention describes transgenic plant cells and plants which due to a reduced activity of a disproportionating enzyme (D enzyme) synthesize a modified starch. Furthermore, the starch synthesized in these plant cells and plants is described.