EP4118101A1 - Enzyme pour la conversion d'acide chlorogénique en acide isochlorogénique - Google Patents
Enzyme pour la conversion d'acide chlorogénique en acide isochlorogéniqueInfo
- Publication number
- EP4118101A1 EP4118101A1 EP21710177.3A EP21710177A EP4118101A1 EP 4118101 A1 EP4118101 A1 EP 4118101A1 EP 21710177 A EP21710177 A EP 21710177A EP 4118101 A1 EP4118101 A1 EP 4118101A1
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- sequence
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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/16—Hydrolases (3) acting on ester bonds (3.1)
- C12N9/18—Carboxylic ester hydrolases (3.1.1)
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- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/415—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from plants
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/80—Vectors or expression systems specially adapted for eukaryotic hosts for fungi
- C12N15/81—Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts
- C12N15/815—Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts for yeasts other than Saccharomyces
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
- C12N15/8241—Phenotypically and genetically modified plants via recombinant DNA technology
- C12N15/8242—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits
- C12N15/8243—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits involving biosynthetic or metabolic pathways, i.e. metabolic engineering, e.g. nicotine, caffeine
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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/10—Transferases (2.)
- C12N9/1025—Acyltransferases (2.3)
- C12N9/1029—Acyltransferases (2.3) transferring groups other than amino-acyl groups (2.3.1)
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- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/62—Carboxylic acid esters
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- C12Y—ENZYMES
- C12Y301/00—Hydrolases acting on ester bonds (3.1)
- C12Y301/01—Carboxylic ester hydrolases (3.1.1)
Definitions
- the present invention relates to a protein whose enzymatic activity makes it possible to convert chlorogenic acid into isochlorogenic acid.
- a subject of the present invention is also a process for converting chlorogenic acid into isochlorogenic acid, comprising the production of a protein according to the invention and its use for the production of isochlorogenic acid from chlorogenic acid.
- the invention therefore lies in the field of the production and use of a recombinant enzyme for the synthesis of a substance.
- Isochlorogenic acid or 3,5-DiCaféoylQuinique or 3,5-DCQ acid
- 3,5-DCQ can be purified from plants, in particular from sweet potato (Ipomoea batatas) (Harrison et al, “Contents of caffeoylquinic acid compounds in the storage roots of sixteen sweet potato genotypes and their potential biological activity J. Amer. Soc. Hort. Sci., 133 (4): 492-500, 2008).
- 3,5-DCQ is however synthesized in relatively small quantities, its purification from plants is therefore laborious and expensive, and is therefore not compatible with a widely distributed use.
- different isomers of caffeoylquinic acid can be produced by the same plant cell, which also involves an additional step of isolating 3,5-DCQ from the other isomers.
- the international application published under the number WO 2013/178 705 describes enzymes for converting chlorogenic acid (in English Chlorogenic Acid, or CGA) in di-, tri- or tetracaffeoylquinic acids.
- the function of said enzymes is close to that of proteins of the HCT (Hydroxycynnamoyl-CoA shikimate / quinate hydroxycinnamoyl transferases) or HQT (Hydroxycynnamoyl-CoA quinate hydroxycinnamoyl transferases) type proteins, belonging more generally to the BAHD acyltransferase family.
- Kojima and Kondo (“An enzyme in sweet potato root which catalyzes the conversion of chlorogenic acid, 3-caféoylquinic acid, to isochlorogenic acid, 3,5- dicaffeoylquinic acid”, Agric. Biol. Chem., 49 (8), 2467- 9, 1985) describe an enzyme, the function of which is not precisely identified and the structure of which is not disclosed, present in a sweet potato extract and capable of converting chlorogenic acid into isochlorogenic acid.
- Teutschbein et al (“Identification and localization of a lipase-like acyltransferase in phenylpropanoid metabolism of tomato (Solanum lycopersicum", J. Biol. Chem., 285 (49), p. 38374-81, 2010) describe the identification of a chlorogenate glucarate caffeoyltransferase (CGT) in a tomato extract.
- CCT chlorogenate glucarate caffeoyltransferase
- the inventors have now isolated and cloned, from extracts of Ipomoea batatas, an enzyme belonging to the GDSL lipase / esterase family, which are characterized by the presence within their amino acid sequence of the sequence of the four following amino acids: glycine (G) - aspartic acid (D) - serine (S) -leucine (L).
- This enzyme is designated by: IbGDSL, for “Ipomoea batatas GDSL enzyme.
- IbGDSL for “Ipomoea batatas GDSL enzyme.
- the inventors have also shown that this enzyme is capable of converting chlorogenic acid into isochlorogenic acid, with high substrate specificity and exclusive or almost exclusive production of 3,5-DCQ.
- the present invention meets the aforementioned needs, in fact after transformation of host cells transformed with a recombinant vector comprising a sequence nucleotide encoding a GDSL esterase / lipase enzyme according to the invention, and placed in suitable culture condition, the enzyme is detected in an extract of total proteins from said host cells.
- said enzyme according to the invention is functional when it is present in an isolated form or in the culture medium of said host cell.
- the GDSL esterase / lipase according to the invention exclusively catalyzes the formation of 3,5-DCQ, to the exclusion of any other isomer.
- the inventors have shown that the GDSL esterase / lipase according to the invention effectively catalyzes the conversion into 3,5-DCQ of the chlorogenic acid present in a plant extract.
- the first subject of the present invention is therefore a protein capable of converting chlorogenic acid into isochlorogenic acid and comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence having at least 80% of identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1.
- the second subject of the invention is a process for the production of isochlorogenic acid (3,5-DCQ) from chlorogenic acid, this process using a protein according to the invention.
- a third subject of the invention is the use of a protein according to the invention for the production of isochlorogenic acid (3,5-DCQ) from chlorogenic acid.
- the invention relates to a protein comprising, or constituted by, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein being capable of converting chlorogenic acid into isochlorogenic acid.
- the invention relates to a recombinant protein, that is to say a protein produced by a cell whose genetic material has been modified.
- the sequence in question may in particular also comprise additional amino acids, on the N-terminal or C-terminal side of said sequence, these additional amino acids making it possible in particular to facilitate the characterization and / or purification of the protein of interest .
- the object sequence can in particular also comprise additional nucleotides, on the 3 'or 5' side of said sequence.
- exhibiting at least 80% identity is meant that said sequences exhibit at least 80% identity after optimal global alignment, that is to say by global alignment between two sequences giving the highest percentage identity. between them.
- the optimal overall alignment of two sequences can in particular be carried out according to the Needleman-Wunsch algorithm, well known to those skilled in the art (Needleman & Wunsch, "A general method applicable to the search for similarities in the amino acid sequences of two proteins ”, J. Mol. Biol., 48 (3): 443-53).
- the proteins according to the invention comprise, or consist of an amino acid sequence having at least 80%, advantageously at least 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88% , 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98% or 99% identity with the amino acid sequence SEQ ID N ° 1 after global alignment optimal.
- the proteins according to the invention comprise, or consist of an amino acid sequence exhibiting at least 99.1%, 99.2%, 99.3%, 99.4%, 99.5%, 99, 6%, 99.7%, 99.8% or 99.9% identity with the amino acid sequence SEQ ID No. 1 after optimal overall alignment.
- proteins according to the invention comprising, or consisting of an amino acid sequence having at least 80% identity with the amino acid sequence SEQ ID No. 1 and capable of converting chlorogenic acid in isochlorogenic acid
- the proteins comprising at least one sequence chosen from: SEQ ID No. 3, SEQ ID No. 4, SEQ ID No. 5 and SEQ ID No. 6 are preferred.
- proteins according to the invention comprising, or consisting of an amino acid sequence having at least 80% identity with the amino acid sequence SEQ ID No. 1 and capable of converting the acid chlorogenic to isochlorogenic acid, proteins comprising:
- proteins according to the invention comprising, or consisting of an amino acid sequence having at least 80% identity with the amino acid sequence SEQ ID No. 1 and capable of converting the chlorogenic acid to isochlorogenic acid
- proteins comprising an amino acid serine at position 11, an amino acid aspartic acid at position 317, an amino acid aspartic acid at position 153 and a histidine amino acid at position 320 are preferred.
- proteins according to the invention comprising, or consisting of a fragment of an amino acid sequence having at least 80% identity with the amino acid sequence SEQ ID No. 1 and capable of converting l 'chlorogenic acid to isochlorogenic acid
- proteins comprising an amino acid serine in position 11 and / or an amino acid aspartic acid in position 317 and / or an amino acid aspartic acid in position 153 and / or an amino acid histidine in position 320 are favorite.
- the proteins according to the invention comprising, or consisting of, a fragment of an amino acid sequence having at least 80% identity with the amino acid sequence SEQ ID N ° 1 and capable of capable of converting l Chlorogenic acid to isochlorogenic acid contain at least 50 amino acids, preferably at least 100 amino acids and more preferably at least 150 amino acids.
- chlorogenic acid is meant the simple ester of caffeic acid and quinic acid, also designated by caffeoylquinic acid or trans-5-O-caffeoyl-D-quinate, of the following formula (I):
- a dicaffeoylquinic acid is a diester composed of a quinic acid molecule of which two of the four alcohol functions have been esterified by a caffeic acid molecule.
- the general formula of DCQs is as follows (II), wherein R2, R3, R4 and Rs each independently represent a caffeoyl group or a hydrogen atom provided that at least two of R2, R3 , R4 and Rs is different from a hydrogen atom:
- isochlorogenic acid also designated by 3,5-0-dicaféoylquinic acid or by “3,5-DCQ”
- 3,5-DCQ is naturally present in particular in an extract of sweet potato, Ipomoea batatas.
- capable of capable of converting chlorogenic acid to isochlorogenic acid is meant a protein which, when placed in suitable reaction conditions, is capable of catalyzing the formation of chlorogenic acid into isochlorogenic acid by the condensation of two molecules of chlorogenic acid, according to the reaction scheme described in Figure 1.
- a protein according to the invention is capable of converting predominantly, and preferably exclusively or almost exclusively, chlorogenic acid into isochlorogenic acid.
- the catalytic activity as defined above of a protein according to the invention meets one, two, three or four of the following characteristics: a) Vmax (maximum initial speed) of between 60 and 240 nanomoles. s 1 ), b) Km (Micha ⁇ lis constant) between 2 and 5 mM (with respect to CGA), c) optimum operating pH between 6 and 6.6; d) optimum operating temperature between 39 and 41 ° C.
- the catalytic activity as defined above of a protein according to the invention meets one, two, three or four of the following characteristics: a) Vmax (maximum initial speed) of 7.18 micromol . Min 1 (or 120 nanomoles. S 1 ); b) Km (Micha ⁇ lis constant) of 3.5 mM (with respect to CGA); c) optimum operating pH of 6.3; d) optimum operating temperature of 39.9 ° C.
- the invention relates to a protein comprising, or constituted by, an amino acid sequence chosen from: SEQ ID No. 1, a sequence having at least 95% identity with SEQ ID No. 1 and comprising the sequence SEQ ID No. 7, said protein being capable of converting chlorogenic acid into isochlorogenic acid.
- the invention relates to a protein comprising, or constituted by, an amino acid sequence having at least 80% identity with the amino acid sequence SEQ ID No. 1 and capable of converting chlorogenic acid into isochlorogenic acid.
- said protein being chosen from the so-called “GDSL esterase / l ipase” enzymes, and in particular from the “GDSL esterase / l ipase” enzymes from Ipomoea, more particularly from the “GDSL esterase / l ipase” enzymes.
- the invention relates to a protein comprising, or constituted by, the amino acid sequence chosen SEQ ID No. 1, said protein being capable of converting chlorogenic acid into isochlorogenic acid and being chosen from the “GDSL esterase” enzymes. / lipase 'from Ipomoea batatas.
- the subject of the invention is an isolated nucleic acid molecule encoding a protein according to the invention.
- the invention relates to an isolated nucleic acid molecule encoding a protein according to the invention, said molecule comprising, or consisting of, a nucleic acid sequence chosen from: SEQ ID No. 2 and a sequence exhibiting at least 80% identity with SEQ ID N ° 2. Due to the degeneration of the genetic code, different nucleic acid sequences can code for the proteins according to the invention. Depending on the host chosen to produce a protein according to the invention, the degeneration of the nucleic code can be used so that the codons of the nucleotide sequence are adapted to the use of the codons preferably observed in the chosen host, so as to optimize expression of the protein of interest in the host protein.
- the invention relates to an isolated nucleic acid molecule encoding a protein according to the invention, said molecule comprising or being constituted by a nucleic acid sequence chosen from: SEQ ID No. 2 and a sequence exhibiting at minus 95% identity with SEQ ID N ° 2.
- the invention relates to a recombinant vector comprising at least one nucleic acid molecule according to the invention, each of said at least one molecule being placed under the control of the means necessary for the expression of said. protein in a given host cell.
- a vector can in particular be chosen from plasmids, Yeast artificial chromosomes (Yeast Artificial Chromosomes or YACs), binary type vectors (pBIN, pGW) and any type of vector that is appropriate depending on the host cell chosen.
- Said means necessary for the expression of said protein in a host cell are well known to those skilled in the art.
- a vector according to the invention may further comprise a nucleotide sequence encoding a means ensuring the export of the protein produced in the culture medium of the host cell and / or a nucleotide sequence encoding a means intended to allow the purification of the protein produced.
- Such means are well known to those skilled in the art who can therefore easily select them and insert, functionally, said nucleotide sequences.
- one of the known means consists of a histidine tag, or series of histidine amino acids.
- the invention relates to a recombinant vector comprising at least one nucleic acid molecule according to the invention, each of said at least one molecule being placed under the control of means necessary for the expression of said protein in a cell.
- the means necessary for the expression of said protein in a yeast host cell are well known to those skilled in the art, they are in particular present in the vectors pPICZa, pPIC9K, pAOX815 sold by the company ThermoFischer.
- the invention relates to a host cell comprising at least one isolated nucleic acid molecule according to the invention or at least one recombinant vector comprising at least one nucleic acid molecule according to the invention, each said at least one molecule being placed under the control of means necessary for the expression of said protein in a host cell.
- the invention relates to a host cell chosen from yeast cells, in particular yeast cells of the strain Pichia pastoris, Saccharomyces cerevisiae, Yarrowia lipolytica, Komagataella sp. and Kluyveromyces lactis, and preferably Pichia pastoris.
- the invention relates to a host cell chosen from plant cells, in particular Nicotiana benthamiana Ipomoea batatas, Nicotiana tabacum, Arabidopsis thaiiana, Zea mays, rice, Coffea arabica, tomato, asteraceae (thistles, artichokes) etc. .
- the invention relates to a transgenic plant comprising at least one isolated nucleic acid molecule according to the invention, at least one recombinant vector comprising at least one nucleic acid molecule according to the invention, or at least a plant host cell according to the invention.
- the invention relates to a transgenic plant comprising at least one isolated nucleic acid molecule according to the invention, at least one recombinant vector comprising at least one nucleic acid molecule according to the invention, or at least one host cell.
- the invention relates to a process for the production of isochlorogenic acid comprising bringing into contact, under appropriate reaction conditions, chlorogenic acid and a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein being capable of converting acid chlorogenic to isochlorogenic acid, to obtain a composition enriched in isochlorogenic acid.
- the invention relates to a process for the production of isochlorogenic acid comprising bringing into contact, under appropriate reaction conditions, chlorogenic acid and a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein being capable of converting chlorogenic acid into isochlorogenic acid, to obtain a composition enriched in isochlorogenic acid, said process further comprising:
- a host cell capable of expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein produced being optionally purified, and / or said chlorogenic acid is present in isolated form or in a composition, said composition being in particular a plant extract, and / or
- the invention relates to a method in which said protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, is purified, prior to its bringing into contact, with chlorogenic acid.
- the purification is carried out by any means known to those skilled in the art.
- the invention relates to a process in which, when bringing said protein into contact with chlorogenic acid, said protein is present in a composition or a mixture, in particular the medium. culture, or supernatant, of a recombinant host cell which has produced said protein.
- the invention relates to a process for the production of isochlorogenic acid further comprising a prior step of culturing, in a culture medium and under suitable conditions, a host cell capable of expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence having at least 80% identity with SEQ ID No. 1.
- reaction time is preferably greater than 4 hours, preferably between 4 and 60 hours, preferably 50 hours.
- the pH of the reaction is between 5 and 7, and preferably is 6 ⁇ 0.5.
- the reaction temperature is between 30 and 40 ° C, and is preferably 35 ° C ⁇ 5 ° C.
- concentration of GDSL per volume of plant extract is between 0.5 mg / L to 10 mg / L, preferably 4.2 mg of GDSL / L ⁇ 3.4.
- the invention relates to a process for the production of isochlorogenic acid further comprising a subsequent step of isolating the isochlorogenic acid produced during the reaction.
- the invention relates to a process for the production of isochlorogenic acid comprising the steps of: i) culturing, in a culture medium and under suitable conditions, a host cell capable of expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No.
- step ii) 1, to express a protein capable of converting chlorogenic acid into isochlorogenic acid, ii) contacting, under appropriate reaction conditions, the protein expressed during step i) with chlorogenic acid, and iii) isolation of the isochlorogenic acid produced during the reaction of step ii).
- said chlorogenic acid is present either in isolated form or in a composition, said composition being in particular a plant extract.
- plant extract is meant the result of the extraction of the active principles of a plant, or of at least a part of a plant, by fermentation, maceration, decoction or infusion.
- Said plant extract can in particular be added in the form of a liquid or a powder.
- a plant extract comprises at least 5% of CGA.
- Such a plant extract can be chosen from plant extracts of coffee, blueberry, sunflower, large burdock, endive, artichoke, Japanese loquat, prune, mint, carrot, potato, apple and pear.
- the invention further relates to a process for producing isochlorogenic acid comprising the steps of: i) culturing, in a culture medium and suitable conditions, a host cell capable of expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80 % identity with SEQ ID No. 1, to express a protein capable of converting chlorogenic acid into isochlorogenic acid, ii) bringing into contact, under appropriate reaction conditions, the protein expressed during step i) with chlorogenic acid, and iii) isolation of the isochlorogenic acid produced during the reaction of step ii).
- a process for producing isochlorogenic acid comprises the steps of: i) Culture, in a culture medium and under appropriate conditions, of a Pichia pastoris host cell capable of expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, to express a protein capable of to convert chlorogenic acid into isochlorogenic acid, said protein being produced and then exported into the culture supernatant of P. Pastoris cells, ii) bringing into contact, under appropriate reaction conditions, the protein expressed during step i ) with chlorogenic acid present in a green coffee extract, and iii) isolation of the isochlorogenic acid produced during the reaction of step ii).
- a process for the production of isochlorogenic acid according to the invention comprises the steps of:
- a protein capable of converting chlorogenic acid into isochlorogenic acid comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting in at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, with chlorogenic acid present in a green coffee extract, and
- green coffee is meant the beans of plants of the genus Coffea before cooking or roasting, in particular the beans of the species Coffea canephora or Coffea arabica.
- green coffee is meant Coffea canephora.
- green coffee extract an extract obtained by solid / liquid extraction in ethanol to recover the metabolites contained in the dried green coffee beans.
- the ethanol used is pure or in the form of a solution aqueous alcohol, the latter comprising from 10% to 99.9% alcohol, more particularly between 40% and 90%, and even more particularly between 50% and 85%.
- the caffeine is removed from the extract by treatment with ethyl acetate or an ethyl acetate / hexane mixture.
- the extract is reduced to powder form by implementing any suitable process known to those skilled in the art, and in particular atomization or lyophilization.
- the chlorogenic acid is present at a minimum concentration of at least 2 mM, preferably at least 5 mM, at least 7.5 mM, preferably 10 mM.
- a process for the production of isochlorogenic acid according to the invention comprises the steps of:
- Pichia pastoris host cell capable of expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, to express a protein capable of converting chlorogenic acid into isochlorogenic acid, said protein being produced and then exported into the culture supernatant of P. Pastoris cells
- the subject of the invention is the product capable of being obtained by a process according to the invention, said process comprising bringing into contact, under appropriate reaction conditions, a green coffee extract whose concentration of chlorogenic acid is greater than equal to 2 mM, and of a protein capable of converting chlorogenic acid into isochlorogenic acid and comprising, or consisting of, an amino acid sequence chosen from:
- a sequence exhibiting at least 80% identity with SEQ ID No. 1 A fragment comprising at least 50 amino acids of said SEQ ID N ° 1 and
- a fragment comprising at least 50 amino acids of said sequence exhibiting at least 80% identity with SEQ ID No. 1.
- the subject of the invention is the product capable of being obtained by a process according to the invention, said process comprising:
- the invention relates to the use of at least one protein, said protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence having at least 80% of 'identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein being capable of converting chlorogenic acid into isochlorogenic acid, or a host cell expressing such a protein, to convert chlorogenic acid to isochlorogenic acid.
- the invention relates to the use of at least one protein comprising, or constituted by, an amino acid sequence chosen from: SEQ ID No. 1, a sequence having at least 80% identity with SEQ ID N ° 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein being capable of converting chlorogenic acid into isochlorogenic acid, in order to convert from acid chlorogenic to isochlorogenic acid, said protein being brought into contact with chlorogenic acid, under appropriate reaction conditions, without having been previously isolated from the host cell or from the culture medium in which the host cell has been cultured to produce said protein.
- the invention relates to the use of at least one protein comprising, or constituted by, an amino acid sequence chosen from: SEQ ID No. 1, a sequence having at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence having at least 80% identity with SEQ ID No. 1, said protein being capable of converting chlorogenic acid into isochlorogenic acid, for converting chlorogenic acid to isochlorogenic acid, said protein being contacted with chlorogenic acid, under appropriate reaction conditions, after having been previously isolated or purified from the host cell or from the culture medium in which the host cell has been cultured to produce said protein.
- said protein, isolated from the host cell or purified from culture medium is added to a solution comprising mainly, or only, chlorogenic acid.
- said protein, isolated from the host cell or purified from culture medium is added to an extract comprising in particular chlorogenic acid.
- the invention relates to the use of at least one host cell expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein being capable of converting chlorogenic acid to isochlorogenic acid, to convert chlorogenic acid to isochlorogenic acid.
- the subject of the invention is the use of at least one yeast cell expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence having at least 80% identity with SEQ ID No. 1, said protein being capable of converting chlorogenic acid into isochlorogenic acid, in order to convert chlorogenic acid into isochlorogenic acid.
- said yeast cell is a cell of the Pichia pastoris strain transformed with a recombinant vector comprising at least one nucleic acid molecule according to the invention, each of said at least one molecule being placed under the control of the means necessary for it.
- Such a vector is in particular chosen from plasmids, Yeast Artificial Chromosomes (YACs), vectors of binary type (pBIN, pGW) and any type of vector which is appropriate depending on the host cell.
- YACs Yeast Artificial Chromosomes
- pBIN vectors of binary type
- pGW vectors of binary type
- the invention relates to the use of at least one plant host cell expressing a protein comprising, or consisting of, an amino acid sequence chosen from: SEQ ID No. 1, a sequence exhibiting at least 80% identity with SEQ ID No. 1, a fragment of said SEQ ID No. 1 and a fragment of said sequence exhibiting at least 80% identity with SEQ ID No. 1, said protein being capable of to convert chlorogenic acid to isochlorogenic acid, to convert chlorogenic acid to isochlorogenic acid.
- Figure 1 represents the diagram of the enzymatic reaction carried out by IbGDSL, which catalyzes the formation of 3,5-DCQ and quinic acid (QA) by the condensation of two molecules of CGA.
- Figures 2A and 2B respectively represent the detection of the enzyme by a western blot test carried out using antibodies directed specifically against the label of six histidines in the C-terminal position of the protein, which demonstrates production of IbGDSL (predicted size 40.1 kDa) by N. benthamiana plants ( Figure 1A) and P. pastoris cells (Figure IB).
- column 1 represents the analysis carried out on the production host transformed with the empty vector (negative control)
- column 2 represents the analysis carried out on the production host transformed with the vector comprising the gene. of interest.
- Figures 3A, 3B and 3C respectively represent the concentration of 3,5-DCQ (in mM) (Fig. 3A and 3B), or the rate of bioconversion in 3,5-DCQ (in micromoles / minutes). (Fig. 3C), depending on the pH (Fig. 3A), the temperature (Fig. 3B) or the CGA substrate concentration (in mM) (Fig. 3C).
- Figures 4A, 4B and 4C respectively represent the chromatograms of the standard of 3,5-DCQ (Fig. 4A) and of the enzymatic reactions of conversion of CGA to 3,5-DCQ carried out with the culture supernatants of P pastoris transformed with the empty vector (FIG. 4B) or transformed with the vector carrying the gene encoding IbGDSL (FIG. 4C) after 3 days of induction with methanol.
- the peaks with a retention time of 3.2 minutes and 8.3 minutes correspond respectively to CGA (m / z neg 353) and to 3,5-DCQ (m / z neg 515).
- Figures 5A and 5B represent the chromatograms of the reactions of bioconversion of chlorogenic acid to 3,5-DCQ via the addition of the substrate directly in the cultures of P. pastoris transformed or with the empty vector (Fig. 5A) or with the vector carrying the gene encoding IbGDSL (FIG. 5B).
- FIG. 5B the chromatograms corresponding respectively to T0 before the addition of CGA, 6 hours after the addition of CGA and 120 hours after the addition of CGA.
- the peaks with a retention time of 3.2 minutes and 8.3 minutes correspond respectively to CGA (m / z neg 353) and to 3,5-DCQ (m / z neg 515).
- Figures 6A and 6B represent respectively, as a function of the reaction time (in hours), the degree of conversion of pure CGA to 3,5-DCQ (in mol%) (Fig. 6A) or the concentration in 3,5-DCQ (in mg / L) (Fig. 6B).
- the theoretical limit at 50% corresponds to the maximum yield obtained when all the CGA molecules are transformed into 3,5-DCQ (stoichiometric yield 2 to 1 respectively).
- Figure 6A curves with triangles (CGA 5 mM or 1.9 g / L), light crosses (CGA 7.5 mM or 2.6 g / L), dark crosses (CGA 9 mM or 3.2 g / L) , dark squares (CGA 10 mM or 3.6 g / L), light squares (CGA 15 mM or 5.5 g / L).
- Figure 6B curves with triangles (CGA 5 mM or 1.9 g / L), light crosses (CGA 7.5 mM or 2.6 g / L), lines (CGA 9 mM or 3.2 g / L), dark squares (CGA 10 mM or 3.6 g / L), light squares (CGA 15 mM or 5.5 g / L).
- Figure 7A represents a chromatogram showing the composition of caffeic acid derivatives of a hydro-alcoholic extract of green coffee, with: peak 1: MCQ1 (another isomer of mono-caffeoylquinic acid), peak 2: MCQ2 (other isomer of mono-caffeoylquinic acid), peak 3: CGA (chlorogenic acid, 5-O-caffeoyl quinic acid); peak 4: CA (caffeic acid); peak 5: MFQ (monoferuloyl quinic acid); peak 7: 4,5-DCQ (3,4 dicaffeoyl quinic acid); peak 8: 3,5-DCQ (3,5 dicaffeoyl quinic acid); peak 9: 3,4-DCQ (4,5 dicaffeoyl quinic acid).
- FIG. 7B represents a chromatogram of a hydroalcoholic extract of green coffee obtained before (black trace) and after 50 h (clear trace) of bioconversion by IbGDSL, in the green coffee extract; the initial substrate concentration is equivalent to 10 mM CGA.
- Pic 1 MCQ
- peak 2 CGA
- peak 3 MFQ
- peak 4 4.5-DCQ
- peak 5 3.5-DCQ
- peak 6 3,4-DCQ.
- the difference in the light and black traces is notably visible at peak 5: 3.5-DCQ.
- FIG. 8 represents the DCQ content (mg / L) obtained for different concentrations of green coffee extract, expressed in CGA equivalent, as a function of the reaction time (in hours).
- the P. pastoris culture medium supernatant containing the GDSL enzyme was concentrated 37 times. Curve with solid line (CGA 1 mM), light circles (CGA 3.5 mM), diamonds (CGA 5 mM), dark squares (CGA 10 mM).
- Figure 9 represents the content of 3,5-DCQ (mg / L) measured in a green coffee extract bioconverted by a cell suspension of P. pastoris expressing IbGDSL (GDSL +) or not expressing it. (GDSL-), as a function of time (in days).
- Figure 10 represents the content of 3,5-DCQ (mg / L) obtained by enzymatic bioconversion by IbGDSL of a green coffee solution containing 5 mM of CGA, as a function of time (in hours) when the P. pastoris culture medium supernatant containing the GDSL enzyme was concentrated 10 times (round), 20 times (triangles) or 37 times (squares).
- Example 1 Identification, production and characterization of a recombinant GDSL enzyme from Ipomoea batatas.
- a DNA bank complementary to batatas was prepared according to the protocol described in WO2013 / 178705 from roots obtained from plants grown under aeroponic conditions rich in 3,5-DCQ.
- the fragmentation of a complex protein extract from a tuber d ⁇ . batatas rich in 3,5-DCQ was carried out in order to select step by step the proteins exhibiting isochlorogenic acid synthase activity.
- SDS-PAGE profiles were obtained and the proteins observed were sequenced. 400 peptides were obtained and their amino acid sequence was aligned with the batatas cDNA library using the tBIastn program which compares a peptide sequence to the translation products of a nucleotide sequence.
- the sequences exhibiting strong homologies with the sequenced peptides were detected among all the sequences composing the transcriptome of the tissue.
- RNA roots of batatas grown in aeroponic conditions were extracted using a specific commercial extraction kit plant tissue according to the manufacturer's instructions (RNeasy Plant Mini Kit ® -QIAGEN).
- the cDNA encoding the candidate protein was amplified using, on the one hand, primers specific to the sequence, designed in such a way as to add a label of six histidines in the C-terminal position of the protein, necessary for its detection after production and for its purification, and, on the other hand, of a commercial kit allowing in a single step: the conversion of the mRNAs into cDNA and the amplification of the sequence by PCR (Polymerase Chain Reaction) (SuperScript TM III One-Step RT-PC R System with Platinum TM Taq High Fidelity DNA Polymerase - INVITROGEN). The amplicon obtained was then cloned into a basic commercial vector (pCR TM 8 / GW / TOPO TM - INVITROGEN) allowing its sequencing and its integration into several vectors dedicated to various expression systems.
- primers specific to the sequence designed in such a way as to add a label of six histidines in the C-terminal position of the protein,
- the peptide and nucleotide sequences encoding IbGDSL are respectively SEQ ID No. 1 and SEQ ID No. 2.
- the gene encoding IbGDSL is subsequently integrated into an expression vector dedicated to plant cells by homologous recombination.
- a label in English: “tag”
- 6 histidines is added at the end of the gene in order to have, after transcription and translation, a labeled protein at the C-terminal. This label allows easy purification of the protein by affinity chromatography.
- This vector is then introduced into Agrobacterium tumefaciens strain EHA105 capable of transfecting a DNA of interest into plant cells according to the freezing and thawing method described in the work of Chen et al (“Enhanced recovery of transformants of Agrobacterium tumefaciens after freeze- thaw transformation and drug selection. ”BioTechniques 16 (4): 664-68, 1994).
- the bacteria having integrated the vector will have acquired at the same time a resistance to an antibiotic thus allowing their selection from the bacteria not transformed in the presence of this antibiotic agent.
- the agrobacteria carrying the recombinant vector are cultured in 15 mL of nutrient medium supplemented with the selection antibiotic and are incubated at 28 ° C with shaking at 200rpm for 24 hours. The next day, 3 hours before the transformation, 100 mM of acetosyringone are added to the cultures of ag ro bacteria to activate their virulence. After this time, the bacteria are centrifuged and taken up in nutrient medium once or twice to remove the antibiotics and at the end, taken up in the infiltration buffer at pH 5.6 (MES 10 mM, acetosyringone 100 mM) . The OD 600 m (optical density) of the bacterial suspension is adjusted to 0.5.
- the aerial parts of the several plants of N. benthamiana aged 3-4 weeks grown in a culture chamber with a photoperiod of 16h / 8h day / night under artificial light (70 pmol m -2 s -1) at 26 ° C with 70% humidity are fully immersed in the agrobacteria solution and subjected to vacuum infiltration in a bell connected to a pump.
- a vacuum step is carried out down to 20 mbar to cause the entry of agrobacteria into the tissues before reestablishing the conditions of atmospheric pressure.
- the N. benthamiana plants are then placed in culture under the same environmental conditions described above for 6 days. It is during this time that the agrobacteria will transfect the DNA of interest corresponding to the IbGDSL gene in plant cells and that the protein will be produced by the transcription and translation machinery of the host cells.
- the gene encoding the protein is integrated into an expression vector dedicated to P. pastoris by homologous recombination.
- This vector allows the expression and the secretion of the protein in the culture medium in the presence of methanol.
- the classic P. pastoris transformation protocol used in this work is described in Cregg and Russell ("Transformation". In Pichia Protocols, edited by David R. Higgins and James M. Cregg, 27-39. Methods in Molecular Biology TM. Totowa, NJ: Humana Press. Https://doi.Org/10.1385/0-89603-421-6:27, 1998). Confirmation of the production of the enzyme was carried out as described above by western blot (FIG. 2B).
- Example 2 Characterization of the catalytic activity of purified recombinant IbGDSL.
- Enzymatic in vitro tests are carried out on the purified recombinant enzyme produced in a plant system. After 6 days of co-culture, the leaves of N. benthamiana agro-infiltrated with the vector carrying the gene of interest, are harvested and ground in an extraction buffer (20 mM sodium phosphate, 0.5 M NaCl, pH 7.4). The extract is then centrifuged and the supernatant in which is found all the soluble proteins from which the IbGDSL is recovered and sterilized by 0.2 ⁇ m filtration. Purification of the protein is then carried out according to the supplier's instructions on Nickel columns (HisTrap HP-GE HEALTHCARE).
- the elution fraction recovered after purification containing the protein was concentrated and desalted on centrifuge units with a cutoff lOkDa (Amicon ® Ultra Centrifugal Filters 0.5 mL -PMNL lOkDa - MILLIPORE).
- the enzymatic tests are carried out in a volume of 50 ⁇ l with 200 to 400 ng of the purified protein (ie a few ⁇ l).
- the optimum reaction pH will be determined using a polybuffer (0.1 M Tris / 20 mM MES / 0.1 M acetic acid) from which a range of 4 to 9 in pH will be constructed.
- a 100 mM stock solution of chlorogenic acid (CGA) is prepared shortly before the experiments from a CGA powder with a purity level greater than 99% diluted in the polybuffer at pH 6.5.
- 150 ml of absolute ethanol are added to the 50 ml reaction to stop the reaction and extract the molecules produced present in the reaction. The test is then centrifuged and the supernatant is recovered for analyzes in UPLC-MS.
- the apparatus used for the analysis step is a Shimadzu Nexera X2 UPLC (LC-30AD pumps, SIL-30AC sample changer, CTO-20A oven, SPD-M20A diode array detectors; Kyoto, Japan) operating in reverse phase with a Kinetex Biphenyl column (00F-4622-AN, Phenomenex, Torrance, CA, USA) of dimensions 150 mm x 2.1 mm, 2.6 ⁇ m.
- Shimadzu Nexera X2 UPLC LC-30AD pumps, SIL-30AC sample changer, CTO-20A oven, SPD-M20A diode array detectors; Kyoto, Japan
- a Kinetex Biphenyl column (00F-4622-AN, Phenomenex, Torrance, CA, USA) of dimensions 150 mm x 2.1 mm, 2.6 ⁇ m.
- the mobile phase consists of a solvent A (ultrapure water Mili-Q, Merck Millipore + 0.1% formic acid, Carlo Erba, Val-de-Reuil, France) and a solvent B (Acetonitrile, Sigma-Aldrich Chemie GmbH, Steinheim, Germany), the gradient of which has been programmed as follows: phase B (%) 5-25% (0-10 min); 25-90% (10-10.5 min); 90% (10.5-12min), 90-5% (12-12.1min), 5% (12.1-14.1min).
- the analysis flow rate is 0.5 mb / min with an oven temperature of 40 ° C.
- a diode array detector records the UV spectra between 220 and 370 nm.
- the device is coupled to a mass spectrometer (Shimadzu LCMS-2020) operating with electrospray ionization (4.5 kV) in negative mode in a range of m / z between 100 and 1000.
- the LabSolutions software version 5.60 SP2 ) is used to operate the system.
- 3,5-DCQ is used as a quantification standard for the different 3,4-DCQ and 4,5-DCQ compounds because the latter belong to the same family of molecules.
- the experiments aimed at determining the physicochemical parameters essential for IbGDSL to convert CGA to 3,5-DCQ were carried out on the purified enzyme produced in the plant expression system.
- IbGDSL is an esterase / lipase capable of condensing two CGA molecules into 3,5-DCQ by transferring the caffeoyl group from one CGA molecule to another CGA molecule (Fig. 1). Therefore, CGA is used herein as an acyl donor. The addition of caffeic acid to the reaction medium does not promote the formation of 3,5-DCQ.
- a pH range between 4 and 9 was established in order to determine the optimum pH for the conversion of CGA to 3,5-DCQ using IbGDSL.
- a fixed amount of purified IbGDSL is contacted with a fixed 10 mM concentration of CGA at different pH conditions established by the polybuffer.
- the reaction is incubated for 30 minutes at 25 ° C and quenched with ethanol.
- the curve obtained made it possible to determine that the optimum reaction pH is situated between 6 and 7 (FIG. 3A).
- a range of CGA concentration was established in order to determine the substrate concentration threshold from which inhibition of the activity of IbGDSL by the product is observed. With a fixed quantity of enzyme and a pH established at 6.5, a slowing down of the enzymatic activity is observed starting from the 10 mM concentration of CGA after 30 minutes of incubation at 36 ° C (FIG. 3C).
- Example 3 Characterization of the activity of recombinant IbGDSL present in the culture supernatant of P. pastoris
- Bioconversion of CGA to 3,5-DCQ in vivo requires the establishment of a metabolically highly active P. pastoris culture.
- the yeasts are put in culture in the nutrient medium containing a buffer composed of 100 mM potassium phosphate with a pH adjusted to pH 6.0. This makes it possible to maintain at a pH 6 the medium in which the enzyme obtained from the microbial cells and the substrate will be in contact.
- the first step of this experiment is to show if the IbGDSL produced by P. pastoris is able to convert CGA into 3,5-DCQ knowing that the original enzyme could potentially be glycosylated three times and that the glycosyl trees generated by P. pastoris are not composed and organized in the same way as plant glycan trees. These differences could directly influence the stability and prevent the good activity of the enzyme.
- the supernatants of two cultures of P. pastoris, one transformed with the empty vector (negative control) and the other with the vector carrying the gene encoding IbGDSL were recovered after 3 days of induction with methanol. These supernatants were incubated at pH 6.5 conditions with 10 mM chlorogenic acid for 30 minutes at 36 ° C. The enzymatic reaction is then stopped with the addition of ethanol and analyzed in UPLC-MS.
- the second step of this experiment is to show whether the CGA directly added to the culture medium of P. pastoris expressing the enzyme could be directly converted to 3,5-DCQ.
- the objective is to dispense with the need for the stage of purification of the enzyme.
- the CGA is added directly to the culture whose pH is buffered at 6 to a final concentration of 10 mM and left in contact with the microbial cells for 3 days. This experiment was carried out at 30 ° C, the ideal temperature for the culture and growth of the organism P. pastoris.
- the supernatant is then analyzed in UPLC-MS.
- the results obtained presented in FIG. 5B show that the culture of P. pastoris expressing IbGDSL is capable of converting CGA into 3,5-DCQ in 3 days with very high efficiency. Indeed, we estimated a bioconversion yield at around 44%, the maximum stoichiometric limit being 50% since two molecules of CGA are needed to form a molecule of 3,5-DCQ.
- CGA can be added indifferently every day, or at the start of the induction phase, or at the end of the induction phase, without affecting the final conversion rate obtained.
- Example 4 Bioconversion of the chlorogenic acid of a green coffee extract into 3,5-DCQ by the culture supernatant of cells of P. pastoris expressing IbGDSL, secreted in said culture medium
- the bioconversion reaction of CGA to 3,5-DCQ was also carried out using a green coffee extract (Coffea canephora), the composition of which is indicated in Fig. 7A.
- This green coffee extract comprising a CGA concentration equivalent to 10 mM and bioconverted over a period of 50 hours, at 30 ° C and at a pH of 6, led to a new extract, the composition of which is shown in Fig. 7B.
- IbGDSL exclusively catalyzes the formation of 3,5-DCQ, to the exclusion of any other isomer.
- no other substrate containing a caffeic acid than chlorogenic acid is biotransformed because no decrease in peaks is observed except for that corresponding to CGA.
- the bioconversion of the green coffee extract with IbGDSL makes it possible to multiply by 4.5 the content of 3,5-DCQ initially present in the extract (200 mg / L at To and 900 mg at Tsoh) for a concentration of start in CGA equivalent to 10 mM.
- the concentration of the enzyme IbGDSL obtained by fermentation of P. pastoris makes it possible to accelerate the reaction rate of the conversion of CGA to 3,5-DCQ (Fig. 10). It is noted that the same level of 3,5-DCQ concentration can be obtained for enzyme concentration factors of 10, 20 and 37 times after 60 h of bioconversion.
- the recombinant IbGDSL enzyme obtained by cultures of P. pastoris constitutes an effective catalyst making it possible to obtain the conversion of chlorogenic acid to 3,5-DCQ in large quantities, either by converting chlorogenic acid. pure, or by transforming a plant extract naturally containing chlorogenic acid such as a green coffee extract.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2002518A FR3108123A1 (fr) | 2020-03-13 | 2020-03-13 | Enzyme pour la conversion d’acide chlorogénique en acide isochlorogénique |
| PCT/EP2021/056403 WO2021180959A1 (fr) | 2020-03-13 | 2021-03-12 | Enzyme pour la conversion d'acide chlorogénique en acide isochlorogénique |
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| EP4118101A1 true EP4118101A1 (fr) | 2023-01-18 |
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| EP21710177.3A Withdrawn EP4118101A1 (fr) | 2020-03-13 | 2021-03-12 | Enzyme pour la conversion d'acide chlorogénique en acide isochlorogénique |
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| US (1) | US20230148181A1 (fr) |
| EP (1) | EP4118101A1 (fr) |
| JP (1) | JP2023532382A (fr) |
| KR (1) | KR20220155587A (fr) |
| CN (1) | CN115605499A (fr) |
| BR (1) | BR112022018314A2 (fr) |
| CA (1) | CA3171517A1 (fr) |
| FR (1) | FR3108123A1 (fr) |
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| FR2991326B1 (fr) | 2012-05-29 | 2017-09-01 | Plant Advanced Tech Pat | Enzymes de bioconversion de l'acide chlorogenique en au moins un acide di-, tri- ou tetra-cafeoylquinique |
-
2020
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2021
- 2021-03-12 CA CA3171517A patent/CA3171517A1/fr active Pending
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- 2021-03-12 CN CN202180032317.1A patent/CN115605499A/zh active Pending
- 2021-03-12 JP JP2022555622A patent/JP2023532382A/ja active Pending
- 2021-03-12 WO PCT/EP2021/056403 patent/WO2021180959A1/fr not_active Ceased
- 2021-03-12 EP EP21710177.3A patent/EP4118101A1/fr not_active Withdrawn
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| CA3171517A1 (fr) | 2021-09-16 |
| CN115605499A (zh) | 2023-01-13 |
| KR20220155587A (ko) | 2022-11-23 |
| JP2023532382A (ja) | 2023-07-28 |
| WO2021180959A1 (fr) | 2021-09-16 |
| IL296404A (en) | 2022-11-01 |
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