Centre National De La Recherche Scientifique

Institut National De La Recherche Agronomique

Institut National Des Sciences Appliquees Toulouse

Universitë De Bordeaux

Université Paul Sabatier (Toulouse III)

Institut Polytechnique De Bordeaux

Institut National Des Sciences Appliquees De Toulouse

Marlène Vuillemin

Magali Remaud-Simeon

Pierre Monsan

Claire Moulis

Sandrine Morel

Marion Claverie

Etienne Severac

Catherine Fontagne-Faucher

Florent Grimaud

Agnès Sabate

Catherine Garnier

Marguerite Dols-Lafargue

Patrick Lucas

The invention relates to: &#x2014;a protein having dextran-saccharase activity and the sequence SEQ ID NO: 1 for an amino acid sequence; &#x2014;a protein having dextran-saccharase activity and the sequence SEQ ID NO: 2 for an amino acid sequence; &#x2014;a complex containing a substrate and a protein with dextran-saccharase activity &#x2014;a method for synthesizing dextrans; and &#x2014;dextrans. The invention also relates to a method for synthesizing gluco-oligosaccharides and gluco-conjugates and to the resulting products.

Protein with dextran-saccharase activity, and uses

The subject matter of the invention is dextrans which have between 95% and 99% of &#x3b1;-1,6 glucosidic bonds, a weight-average molar mass Mat least equal to 0.7&#xd7;10g.mol, and a dispersity index D of between 1.3 and 3. The invention also relates to a dextran saccharase which makes it possible to produce such dextrans, and to a method for producing said dextrans.

Very high molar mass dextrans

Growing community of inventors

Ramonville-Saint-Agne, France

Marlène Vuillemin