Centre National De La Recherche Scientifique

Institut National De La Recherche Agronomique

Institut National Des Sciences Appliquees De Toulouse

Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnement

Universitë De Bordeaux

Institut Polytechnique De Bordeaux

Institut National Des Sciences Appliquees Toulouse

Farmitalia Carlo Erba S.r.l.

Université Paul Sabatier (toulouse Iii)

Centre National De La Recherche Scientifique-cnrs

Libragen

Ulice

Institut National Des Sciences Appiquees De Toulouse (insat)

Institut National Des Sciences Appliquees

Pierre Monsan

Magali Remaud-Simeon

Claire Moulis

Gabrielle Potocki-Veronese

Marlene Vuillemin

Sandrine Morel

Marion Claverie

Marlène Vuillemin

Isabelle Andre

Paolo Sarmientos

Patrick Robe

Philippe Valet

Renaud Nalin

Arnaud Messager

Francois Paul

Etienne Severac

Emmanuel Boures

Rémy Burcelin

Benjamin Gillet

Marie Pierre Bousquet

Rene-Marc Willemont

Gilles Joucla

Remy Burcelin

Didier Betbeder

Jean-Sebastien Saulnier-Blache

Claude Bensoussan

Philippe Reulet

David Guieysse

Alvaro Lafraya

Catherine Fontagne-Faucher

Florent Grimaud

Agnès Sabate

Catherine Garnier

Marguerite Dols-Lafargue

Patrick Lucas

Pierre Pujic

Magali Remaud-simeon

Magali Remaud

Sophie Bozonnet

René-Mrac Willemot

René-Marc Willemot

Jean-Sébastien Saulnier-Blache

Polypeptides having the ability to specifically form connections of glucosyl units in alpha 1,3 on an acceptor having at least one hydroxyl moiety are presented. The polypeptides include i) the pattern I of sequence SEQ ID NO: 1, ii) the pattern II of sequence SEQ ID NO: 2, iii) the pattern III of sequence SEQ ID NO: 3, and iv) the pattern IV of sequence SEQ ID NO: 4, or derivates from one or several of said patterns, wherein the polypeptide furthermore has an aspartic residue (D) at position 5 of the pattern II (SEQ ID NO: 2), a glutamic acid residue (E) at position 6 of the pattern III (SEQ ID NO: 3) an an aspartic acid residue (D) at position 6 of the pattern IV (SEQ ID NO: 4). Methods for producing acceptors connected to glucosyl units in alpha 1,3 using the polypeptides are also provided.

Polypeptide having the ability to form connections of glucosyl units in alpha-1,3 on an acceptor

Polypeptides having the ability to specifically form connections of glucosyl units in alpha 1,3 on an acceptor having at least one hydroxyl moiety are presented. The polypeptides include i) the pattern I of sequence SEQ ID NO: 1, ii) the pattern II of sequence SEQ ID NO: 2, iii) the pattern III of sequence SEQ ID NO: 3, and iv) the pattern IV of sequence SEQ ID NO: 4, or derivates from one or several of said patterns, wherein the polypeptide furthermore has an aspartic residue (D) at position 5 of the pattern II (SEQ ID NO: 2), a glutamic acid residue (E) at position 6 of the pattern III (SEQ ID NO: 3) and an aspartic acid residue (D) at position 6 of the pattern IV (SEQ ID NO: 4). Methods for producing acceptors connected to glucosyl units in alpha 1,3 using the polypeptides are also provided.

Polypeptide having the capacity to form alpha-1,3 glucosyl unit branchings on an acceptor

The present invention relates to a method for producing a glycosylated synthon or a monomer. Said method includes at least one step of placing at least one glycan-saccharase in the presence of at least one hydroxylated synthon and at least one saccharose. The invention also relates to a method for producing a glyco(co)polymer, including polymerizing at least two monomers separately obtained from the enzymatic glycosylation method according to the invention, and to a method for producing a glyco(co)polymer, preferably a block glyco(co)polymer, including coupling at least two monomers separately obtained from the enzymatic glycosylation method according to the invention.

Enzymatic production of glycosylated synthons

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

The present invention relates to a recombinant process for the production of truncated or mutated dextransucrases while conserving the enzymatic activity or their specificity in the synthesis of the &#x3b1;-1,6 bonds. The present invention relates to nucleic acid sequences of truncated or mutated dextransucrases, vectors containing the nucleic acid sequences and host cells transformed by sequences encoding truncated or mutated dextransucrases. In another aspect, the invention concerns a method for producing, in a recombinant manner, truncated or mutated dextransucrases which conserve their enzymatic activity or which conserve their specificity in the synthesis of &#x3b1;-1,6 bonds and can produce, from saccharose, dextrans with high molar mass and modified rheological properties compared with the properties of dextran obtained with the native enzyme and isomalto-oligosaccharides with a controlled molar mass and dextrans. The dextrans and isomalto-oligosaccharides of the invention can be used namely as texturing agents or as prebiotics.

Construction of new variants of dextransucrase DSR-S by genetic engineering

The invention relates to the direct selection of metabolic pathways having a determined function in the transformation of a substrate {Ai} into a target product {B}, which is of interest in the industrial, pharmaceutical or agri-food sectors. More specifically, the invention relates to the detection, within metagenomic libraries, of novel biosynthesis pathways involved in a biochemical reaction having a known product {B}. The selection and characterization of said novel metabolic pathways enables {B} to be produced enzymatically. The invention provides an alternative to the chemical synthesis of the molecule in question {B}. Moreover, and above all, the invention can be used specifically to target and exploit the only metabolic pathways enabling the transformation of {Ai} into {B}, while eliminating the associated metabolic pathways that can catabolise the target product {B}.

Method for the identification of a metabolic pathway family by means of positive selection

The invention relates to the use of prebiotics for the preparation of food or pharmaceutical compositions which are intended for the treatment and/or prevention of hyperglycaemic syndromes and, in particular, for the treatment of Type II diabetes and/or the prevention of the onset of Type II diabetes in patients with a predisposition to developing the type of diabetes. The invention also relates to the food and pharmaceutical compositions containing the prebiotics.

Use of prebiotics, preferably glucooligosaccharide, for the prevention of the onset of type II diabetes

Nucleic acid sequences of truncated or mutated alternansucrases, vectors containing these nucleic acids sequences, host cells transformed with the nucleic acid sequences encoding truncated or mutated alternansucrases are provided. Furthermore, a process to recombinantly alternansucrase with a high level of expression, while retaining the enzymatic activity is described.

Fully active alternansucrases partially deleted in its carboxy-terminal and amino-terminal domains and mutants thereof

The invention concerns the use as molecular vector in pharnaceutical, cosmetic and food products of alkylmonoglucosides of general formula (I) in which R is a linear or branched C -C alkyl radical.

Use of alkylmonoglucosides as molecular vectors

Process for the enzymatic preparation of basic fibroblast growth factor

Growing community of inventors

Mondonville, France

Pierre Monsan