WO2001057196A1 - Adpglucosa pirofosfatasa vegetal, procedimiento de obtencion, uso en la fabricacion de dispositivos de ensayo y en la obtencion de plantas transgenicas - Google Patents
Adpglucosa pirofosfatasa vegetal, procedimiento de obtencion, uso en la fabricacion de dispositivos de ensayo y en la obtencion de plantas transgenicas Download PDFInfo
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- WO2001057196A1 WO2001057196A1 PCT/ES2001/000021 ES0100021W WO0157196A1 WO 2001057196 A1 WO2001057196 A1 WO 2001057196A1 ES 0100021 W ES0100021 W ES 0100021W WO 0157196 A1 WO0157196 A1 WO 0157196A1
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- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
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- C12N15/8241—Phenotypically and genetically modified plants via recombinant DNA technology
- C12N15/8261—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield
- C12N15/8271—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance
- C12N15/8273—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for drought, cold, salt resistance
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- 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
- C12N15/8245—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 involving modified carbohydrate or sugar alcohol metabolism, e.g. starch biosynthesis
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Definitions
- ADPglucose plant pyrophosphatase method of obtaining, use in the manufacture of test devices and in obtaining transgenic plants.
- the invention relates to the sector of obtaining, purifying and characterizing isoforms of the enzyme ADPglucose pyrophosphatase (AGPPase), also called ADPglucose phosphodiesterase, and to the applications of this enzyme in the determination of sugar-nucleoside levels, and of sulfonucleotides and the obtaining of transgenic plants in which the AGPPase gene is overexpressed giving rise to plants with reduced starch content and high salinity resistance.
- ADPglucose pyrophosphatase also called ADPglucose phosphodiesterase
- Starch is the main form of carbohydrate storage in vegetables. It accumulates in large quantities in organs such as seeds (wheat, barley, corn, pea, etc.) and tubers (potato and sweet potato among others), and is a fundamental constituent of the human being's diet.
- starch is a polymer frequently used in the paper, cosmetic, pharmaceutical and food industries, and is also used as a fundamental component for the manufacture of biodegradable plastics and low environmental impact paints.
- Another polysaccharide, cellulose is a fundamental component of the cell wall of plants, which constitutes the fundamental raw material in industrial processes as important as that of paper production. Consequently, the study of the processes involved in the synthesis of these glucose polymers is a priority issue in various fields of industrial production.
- UDPglucose is the fundamental precursor of cellulose biosynthesis and cell wall polysaccharides.
- ADPglucose is the universal precursor of the biosynthesis of starch in reserve tissues of the plant. Its concentration in the cell is decisive for the quantity and quality of the starch produced by the plant. Reflections on the factors that govern the endogenous levels of ADPG in the plant cell have revolved primarily around their synthesizing enzymes, such as ADPG pyrophospholase (AGPase) and Sucrose smtase (Preiss,
- YSA1H a human adenosme 5 "-diphosphosugar pyrophosphatase possessmg a MutT motif". Biochem J. 331-337).
- this type of activity has been poorly described in the literature (Rodr ⁇ guez-López, M., Baro] a-Fernández, E., Zandueta-Criado, A., Pozueta-Romero, J. (2000) "Adenosine diphosphate glucose pyrophosphatase: a plastidial phosphodiesterase that prevents starch biosynthesis ". Proc. Nati. Acad.
- HvGLPl HvGLPl
- starch constitutes a viscosifying and gelling agent of first necessity.
- the biosynthesis of starch in the plant cell from ADPG takes place in the subcellular compartment called plastid. Both synthesis and degradation of ADPG occur in this compartment and therefore the control of starch levels can take place by controlling the regulatory processes of ADPG levels.
- the different applications of starch produced in a plant are based on the balance of amylose and amylopectin, which determines the structure of the starch granule, as well as its viscosity in aqueous suspensions. Such a proportion of amylose and amylopectin depends on the concentration of ADPG in the plant cell. No method to regulate the characteristics of starch produced in a plant by controlling the degradation of ADPG, which the enzyme described in the present invention, can provide, is known to date.
- starch In addition to acting as a reserve substance for the plant, starch accumulates in the plant cell in circumstances in which the plant is not subjected to water stress conditions. Under conditions in which the plant is subjected to high temperatures or high concentrations of salts in the medium, the plant stops accumulating starch, producing large amounts of soluble sugars that accumulate in the vacuole (Keeling, PL, Bacon, PJ, Holt, DC (1993) "Elevated temperature reduces starch deposition in wheat endosperm by reducing the activity of soluble starch synthase" Plant 191, 342-348; Geigenberger, P., Geiger, M., Stitt, M.
- the Arabidopsis HAL2-like gene family includes a novel sodium-sensitive phosphatase "Plant J. 17, 373-383). From these observations, it is possible that enzymatic reactions responsible for the hydrolysis of ADPG, APS and
- PAPS are responsible for adaptive processes of the plant to the conditions of water stress.
- Chromatographic and radiological techniques constitute a powerful tool for determining nucleotide levels such as sulfonucleotides (APS and PAPS among others; Yoshida, H., Fukui, S., Yamashina, I., Tanaka, T., Sakano, T., Usui, T., Shimotsuji, T., Yabuuchi, H., Owada, M., Kitagawa, T. (1982) "Elevation of nucleotide pyrophosphatase activity in skin fibroblasts from patients with Lowe's syndrome". Biochem. Biophys. Res.
- sugar-nucleoside diphosphate such as those derived from glucose, ribose, mannose, galactose, glucuronic acid, fructose and galacturonic acid
- sugar-nucleoside diphosphate such as those derived from glucose, ribose, mannose, galactose, glucuronic acid, fructose and galacturonic acid
- sugar-nucleoside diphosphate such as those derived from glucose, ribose, mannose, galactose, glucuronic acid, fructose and galacturonic acid
- the plant enzyme object of the invention has various isoforms in the plant tissues from which it can be obtained (Baroja-Fernández, E., Zandueta-Criado, A., Rodr ⁇ guez-López, M., Akazawa, T., Pozueta-Romero, J. (2000) "Distinct isoforms of ADPglucose pyrophosphatase and
- ADPglucose pyrophosphorylase occur in the suspension-cultured cells of sycamore (Acer pseudopla.tan.us L.). FEBS Lett. 480, 277-282).
- the simplest extraction isoform is what is called soluble, while other isoforms, which we can call particulate, are intimately adhered to the starch granules, so that to obtain them it is necessary to destroy the granule by hydrolyzing the starch.
- two isoforms of AGPPase were partially sequenced; one soluble and another associated with the starch granule of plants.
- An object of the invention is, first of all, to obtain a soluble isoform of AGPPase in substantially pure form, from plant tissues, and its characterization. Another object is to obtain the amino acid sequence of the soluble barley AGPPase (Hordeu vulgare, cv.
- Another object of the invention is the procedure followed for the preparation of devices or kits for determining sugar-nucleoside diphosphates and sulfonucleotides based on the use of the enzymatic product with AGPPase activity.
- UDPglucose is the precursor of glycogen in animals, so that its levels in various tissues and organs (blood, muscle, liver) are related to the various situations, pathological or not, of glycidic metabolism.
- the kits available for simple, quick and inexpensive determination of Azu ⁇ nucleoside presents considerable interest cares for the industry of biomedical products, both diagnostic and research in physiology.
- AGPPase object of the invention can be made from any plant tissue of any species, such as any Monocotyledonous or Dicotyledonous, such as barley (Hordeum vulgare), wheat (Tri ticum aestivum ), pepper ⁇ Capsicum annuum), tomato ⁇ Lycopersicon sculentum), potato ⁇ Solanum tuberosum), Arabidopsis ⁇ Arabidopsi s thaliana), or maple (Acer pseudoplatanus L.), to name just a few of the countless representative examples of different families and genera .
- any Monocotyledonous or Dicotyledonous such as barley (Hordeum vulgare), wheat (Tri ticum aestivum ), pepper ⁇ Capsicum annuum), tomato ⁇ Lycopersicon sculentum), potato ⁇ Solanum tuberosum), Arabidopsis ⁇ Arabidopsi s thaliana), or maple (Acer pseudopla
- the general method of obtaining and purifying the soluble plant AGPPase described in the invention includes the following steps, in which small variations can be admitted that do not substantially modify the general scheme of the extraction and purification process, from any plant tissue: 1. Homogenization of plant tissue with an extraction buffer.
- AGPPase can be easily determined in any of the following ways: a) Protein elution and subsequent detection of G1P production in the presence of ADPG. b) Incubation of the gel in a solution with bis-PNPP and developed in a basic solution.
- the general method of obtaining and purifying AGPPase vegetable particulate includes the following steps, in which small variations can be admitted that do not substantially modify the general scheme of the extraction and purification procedure, from any plant tissue:
- AGPPase in samples incubated with ADPG. 8: Isoelectric focusing.
- the position of AGPPase can be easily determined in any of the following ways: a) Protein elution and subsequent detection of G1P production in the presence of ADPG. b) Incubation of the gel in a solution with bis-para-nitrophenyl phosphate (bis-PNPP) and developed in a basic solution as described by Nishimura and Beevers
- AGPPase can be easily determined in any of the following ways: a) Protein elution and subsequent detection of G1P production in the presence of ADPG. b) Incubation of the gel in a solution with bis-PNPP and developed in a basic solution.
- the enzyme product obtained by the procedures described above, or other equivalents, is identified by the following functional standards: • It is a pyrophosphatase / phosphodiesterase (EC 3.1.4) that catalyzes the hydrolysis of ADPG in equimolar amounts of G1P and AMP (Rodr ⁇ guez-López, M., Baroja-Fernández, E.,
- ADPG In addition to ADPG, it recognizes small molecules that have phosphodiester and phosphosulfate bonds, such as UDP-glucose, GDP-glucose, GDP-mannose, ADP-mannose, bis-PNPP,
- PAPS and APS and others of similar structure does not hydrolyse molecules with phosphomonoester bonds such as G1P, G6P, AMP, 3-phosphoglycerate, and the like. Nor does it hydrolyze cyclic AMP or long-chain nucleic acids such as DNA or RNA, which are substrates of other phosphodiesterases described in the literature. ⁇ Unlike pyrophosphatases of ADP-sugars (EC 3.6.1.13, EC 3.6.1.21) described in bacteria and animals and unlike other phosphodiesterases (EC 3.1.4), their ionic requirements are reduced, so it can work in the absence of Magnesium, Manganese, Cobalt, and other divalent cations.
- AGPPase hydrolyzes bis-PNPP.
- phosphorylated molecules such as AMP, ADP, ATP, 3-phosphoglycerate, orthophosphate, inorganic pyrophosphate, and others of similar characteristics.
- Coli XLl Blue Strains of said transformed bacteria were deposited on 23.06.00 in the Spanish Type Culture Collection, located in the Research Building of the University of Valencia, Burj Asot Campus, Burjasot 46100 (Valencia, Spain) with CECT deposit number 5338.
- pVT'BSP-GL was digested sequentially with the enzymes HindIII, T4 DNA polymerase and Xbal and was cloned into the binary plasmid pCGN1548 (McBride, KE, Summerfelt, KR
- kits designed for the determination of nucleotides such as sugar-nucleoside diphosphates and sulfonucleotides are based on the action of the product with AGPPase activity on phosphodiester bonds and phosphosulfate of small molecules that, after being hydrolyzed, give rise to other easily detectable molecules and quantification.
- kits The two most convenient strategies for the preparation of these kits are based on the hydrolysis of the sugar-nucleoside diphosphate by means of the enzyme object of the present invention, that is, AGPPase, producing equal amounts of sugar-1-phosphate and the corresponding mono nucleoside. - phosphate.
- the determination of the amount of nucleotide initially existing in the sample can be considered from the determination of the amount of sugar-1-phosphate and nucleoside monophosphate produced, as specified below: ⁇
- the sugar-1-phosphate is glucose-1-P (G1P)
- said compound is subjected to the action of the phosphoglucomutase enzyme yielding glucose-6-phosphate, which in turn can be reacted coupled with NAD + by the action of the glucose enzyme -6-phosphate dehydrogenase, obtaining 6-phosphogluconate and NADH, easily determinable.
- sugar-1-phosphate is not G1P
- the determination of sugar-1-phosphate and nucleoside mono-phosphate is carried out by colorimetric determination of orthophosphate (Pi) produced after the hydrolysis of these compounds with alkaline phosphatase .
- the 5 'nucleus can be used as a coupling enzyme tidase which will hydrolyze the nucleoside mono-phosphate in equimolar amounts of the corresponding nucleoside and
- the Pi released in either case is easily quantifiable by known colorimetric methods.
- the strategy for determining sulpho-nucleotide levels is based on the hydrolysis of these nucleotides and consequent production of equimolar amounts of sulfate, which can be determined turbidimetrically or nephelometrically (Sorbo, B.
- Examples are described below in which the procedure for obtaining and purifying AGPPase, in its soluble and particulate isoforms, from barley leaves is shown in detail. The same procedure, with minimal variations appropriate to each case, can be applied to any other plant tissue, to obtain the corresponding soluble isoforms with the enzymatic activity described.
- Other examples show the use of AGPPase for the production of kits (test devices) for the determination of sugar-nucleotides and sulfonucleotides.
- Another example shows obtaining a complete cDNA encoding soluble AGPPase.
- Another example shows the obtaining of transgenic plants.
- Example 1 Extraction and purification of soluble AGPPase obtained from barley leaves All steps were developed at 4 ° C, unless otherwise indicated.
- the plant tissue 200 g was homogenized with 600 mL of extraction buffer (50 mM Month pH 6, 1 mM EDTA, 2 mM DTT) using an Aring Blender. The homogenate was filtered through four layers of Miracloth, centrifuged at 100,000 g for 30 minutes and the supernatant was adjusted to 50% ammonium sulfate.
- the precipitate obtained after 30 minutes of centrifugation at 30,000 g (20 ° C) was resuspended in 560 mL of 50 mM Month pH 4.2, then heated in a water bath at 62 ° C for 20 minutes, cooled in ice, and centrifuged at 30,000 g for 20 minutes. Supernatant proteins were precipitated by 50% ammonium sulfate, and resuspended in 5.7 mL of 50 mM Month pH 6. The sample was then subjected to Superdex 200 column gel filtration (Pharmacia LKB Biotechnology, Uppsala, Sweden) pre-equilibrated with Month pH 6 and NaCl 150 rnM. Elution was performed with the same buffer.
- the optional improvement consists of a subsequent purification in cation exchange column type Mono S HR 5/5 (Pharmacia, Uppsala, Sweden) and affinity column type A A Sepharose (Amersham Pharmacia Biotech, Uppsala, Sweden). The fractions with AGPPase activity were pooled and concentrated. The proteins were electrophoretically separated in a 4-12% Bis-Tris NuPAGE gels system (Novex, San Diego, California).
- Example 2 Extraction and purification of AGPPase particulate obtained from pericarp of tomato fruits
- the plant tissue (30 Kg) was homogenized with 30 L of extraction buffer (50 mM HEPES pH 7, EDTA 1 mM, DTT 2 mM) using an aring Blender. The homogenate was filtered through four layers of Miracloth, is cen ⁇ trifugó at 20,000 g for 30 min. The precipitate was resuspended in 1.5 L of extraction buffer with 3% Triton X-100.
- extraction buffer 50 mM HEPES pH 7, EDTA 1 mM, DTT 2 mM
- the suspension was centrifuged at 20,000 g for 30 min after which the sediment was resuspended in 0.54 L of extraction buffer with MgCl 2 (200 M) or with ⁇ -amylase (100 units / mL), ⁇ -amylase (100 units / mL) and amyloglucosidase (15 units / mL). After one hour of stirring, the suspension was centrifuged for half an hour at 20,000 g and the supernatant dialyzed against 10 mM HEPES pH 7, and 10 mM MgCl 2 . The dialyzed sample was lyophilized and resuspended with water to a final volume of 60 mL.
- the sample was then subjected to Superdex 200 column gel filtration (Pharmacia LKB Biotechnology, Uppsala, Sweden) pre-prepared with HEPES pH 7 and 150 mM NaCl. Elution was performed with the same buffer. The fractions that showed AGPPase activity were subjected to a subsequent purification step in anion exchange column type Mono Q (Pharmacia, Uppsala, Sweden). The fractions with AGPPase activity were collected and contracted. The proteins were electrophoretically separated in a 4- 12% Bis-Tris NuPAGE gels system (Novex, San Diego, California).
- G1P was determined spectrophotometrically in 300 microliters of mixture containing Hepes 50 mM pH 7, EDTA 1 mM, MgCl2 2 mM, KCl 15 mM, NAD + 0.6 mM, a unit of phosphoglucomutase and another of glucose-6-phosphate dehydrogenase from Leuconostoc mesenteroides, and 30 microliters of the supernatant resulting from step one. After 20 minutes of incubation, NADH production was monitored at 340 nm using a Multiskan EX (Labsystems) spectrophotometer. The amount of NADH produced by any protein extract in the absence of ADPG in step one was negligible.
- the native molecular mass of AGPPase was determined by gel filtration by means of a representation of the partition coefficient (Kav) against the logarithm of the molecular mass of the following standard proteins: bovine thyroglobuilin (670 kDa), bovine gamma globulin ( 158 kDa), ovalbumin (45 kDa), myoglobin (17 kDa) and vitamin B-12 (1.3 kDa). Protein content was determined by the Bradford method using the reagent prepared by Bio-Rad and gamma globulin as a standard.
- Tables 1 and 2 presented below reflect the purification of soluble AGPPase from barley leaves and AGPpase particulate from tomato pericarp, respectively.
- Unit (U) is defined as the amount of enzyme that catalyzes the production of 1 ⁇ mol of product per minute.
- AGPPase activity thus obtained meets the following characteristics: 1
- Both soluble and particulate AGPPase are phosphodiesterases that catalyze the hydrolysis of ADPG producing equimolar amounts of G1P and AMP.
- both isoenzymes recognize other small molecules that have phosphodiester bonds, such as UDP-glucose, GDP-glucose, bis-PNPP and others of similar structure. They also catalyze the hydrolysis of small molecules with phosphosulfate bonds, such as PAPS and APS, releasing equimolar amounts of sulfate and the corresponding nucleotide.
- K for ADP-glucose 0.5 mMolar, which is about four to five times lower to K-, corresponding to other sugar-nucleotide substrates such as ADP-ribose, UDP-glucose or the like.
- the affinity for APS is similar to the affinity for ADP-glucose.
- Soluble AGPPase is resistant to a temperature of
- SEQ ID NO: 1 Internal sequences (obtained after partial hydrolysis of AGPPase with trypsin): SEQ ID NO: 2 and 3
- the AGPPase enzyme shows a very wide diffusion among vegetables, so that the enzyme product with activity
- AGPPase can be obtained from any vegetable.
- Example 7 Preparation of enzymatic kits to determine glucose-nucleoside diphosphates
- a kit is prepared containing the following elements: a. AGPPase b. NAD c. Phosphoglucomutase (PGM) d. G6P dehydrogenase (G6PDH) e. Tampon
- the determination of the amount of glucose-nucleoside diphosphate present in the test sample is based on the spectrophotometric determination of the NADH produced according to the following coupled reaction: (shows problem) NAD + NADH
- Example 8 Preparation of enzymatic kits for the determination of nucleoside diphosphates of sugars other than glucose
- Ribose-nucleoside diphosphates ADP-ribose, GDP-ribose, UDP-ribose, CDP-ribose or TDP-ribose
- mannose-nucleoside diphosphates ADP-mannose, GDP-mannose, TDP-mannose, UDP-mannose or CDP-mannose
- B galactose nucleoside diphosphates ADP-galactose, GDP-galactose, UDP-galactose or CDP-galactose
- B glucuronic-nucleoside diphosphates (GDP-glucuronic, UDP-glucuronic, ADP-glucuronic, CDP-glucuronic or TDP-glucuronic) ⁇ fructose-nucleoside diphosphates (GDP-fructose, ADP-fructose, CDP-fructose, UDP-fructose, TDP-fructose)
- AGPPase b. 5'-nucleotidase (or, alternatively, alkaline phosphatase)
- the determination of the amount of sugar-nucleoside diphosphate present in the test sample is based on the colorimetric determination of the orthophosphate released according to the following coupled enzymatic reaction:
- Example 9 Development of enzymatic kits for the determination of PAPS and APS
- Example 10 Obtaining transgenic tobacco, potato and tomato plants that overexpress AGPPase
- High in soluble sugars such as sucrose, glucose-6-phosphate, glucose and fructose.
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/181,993 US7205150B2 (en) | 2000-02-02 | 2001-02-01 | Transgenic plants over-expressing plant ADP-glucose pyrophosphatase |
CA002399149A CA2399149A1 (en) | 2000-02-02 | 2001-02-01 | Plant adpglucose pyrophosphatase, process for the production, use in themanufacture of assay devices and in producing transgenic plants |
JP2001558011A JP2003521921A (ja) | 2000-02-02 | 2001-02-01 | 植物adpグルコースピロホスファターゼ、その製造方法、アッセイ装置及びトランスジェニック植物の製造におけるその使用 |
EP01902430A EP1253198A1 (en) | 2000-02-02 | 2001-02-01 | Plant adpglucose pyrophosphatase, method for the production thereof, its use in the production of assay devices and for obtaining transgenic plants |
AU3026301A AU3026301A (en) | 2000-02-02 | 2001-02-01 | Plant adpglucose pyrophosphatase, method for the production thereof, its use in the production of assay devices and for obtaining transgenic plants |
AU2001230263A AU2001230263B2 (en) | 2000-02-02 | 2001-02-01 | Plant adpglucose pyrophosphatase, method for the production thereof, its use in the production of assay devices and for obtaining transgenic plants |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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ESP200000271 | 2000-02-02 | ||
ES200000271A ES2164582B1 (es) | 2000-02-02 | 2000-02-02 | Adpglucosa pirofosfatasa vegetal alternativamente llamada adpglucosa fosfodiesterasa procedimiento de obtencion y su uso en la fabricacion de dispositivos de ensayo. |
ESP200001914 | 2000-07-28 | ||
ES200001914A ES2164609B1 (es) | 2000-02-02 | 2000-07-28 | Mejoras introducidas en el objeto de la patente principal n- 200000271, sobre: adpglucosa pirofosfatasa vegetal, alternativamente llamada adpglucosa fosfodiesterasa, procedimiento de obtencion y su uso en la fabricacion de dispositivos de ensayo. |
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US (1) | US7205150B2 (es) |
EP (1) | EP1253198A1 (es) |
JP (1) | JP2003521921A (es) |
AU (2) | AU2001230263B2 (es) |
CA (1) | CA2399149A1 (es) |
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WO2002081672A1 (es) * | 2001-04-10 | 2002-10-17 | Universidad Publica De Navarra | Adpglucosa pirofosfatasa bacteriana, procedimiento de obtencion, uso en la fabricacion de dispositivos de ensayo y en la obtencion de plantas y bacterias transgenicas |
WO2004007706A1 (es) * | 2002-07-15 | 2004-01-22 | Universidad Publica De Navarra | Azucar-nucleótido pirofosfatasa/fosfodiesterasa (nppasa) vegetal, procedimiento de obtención, uso en la fabricación de dispositivos de ensayo y su utilización en la obtención de plantas transgénicas |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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ES2310954B1 (es) * | 2006-05-12 | 2009-11-20 | Consejo Superior De Investigaciones Cientificas | Plantas transgenicas con niveles alterados de almidon como resultado de la variacion de la actividad de nudix vegetales que hidrolizan adpglucosa. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5261286A (en) * | 1975-11-13 | 1977-05-20 | Japan Tobacco Inc | Preparation of enzymes |
EP0485044A2 (en) * | 1990-11-08 | 1992-05-13 | Institut Für Genbiologische Forschung Berlin Gmbh | Plasmids for the production of transgenic plants that are modified in habit and yield |
Family Cites Families (1)
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US5792920A (en) * | 1988-11-10 | 1998-08-11 | Imperial Chemical Industries Plc | Plants with altered ability to synthesize starch and process for obtaining them |
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2001
- 2001-02-01 CA CA002399149A patent/CA2399149A1/en not_active Abandoned
- 2001-02-01 US US10/181,993 patent/US7205150B2/en not_active Expired - Fee Related
- 2001-02-01 AU AU2001230263A patent/AU2001230263B2/en not_active Ceased
- 2001-02-01 AU AU3026301A patent/AU3026301A/xx active Pending
- 2001-02-01 EP EP01902430A patent/EP1253198A1/en not_active Withdrawn
- 2001-02-01 WO PCT/ES2001/000021 patent/WO2001057196A1/es active Application Filing
- 2001-02-01 JP JP2001558011A patent/JP2003521921A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5261286A (en) * | 1975-11-13 | 1977-05-20 | Japan Tobacco Inc | Preparation of enzymes |
EP0485044A2 (en) * | 1990-11-08 | 1992-05-13 | Institut Für Genbiologische Forschung Berlin Gmbh | Plasmids for the production of transgenic plants that are modified in habit and yield |
Non-Patent Citations (7)
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002081672A1 (es) * | 2001-04-10 | 2002-10-17 | Universidad Publica De Navarra | Adpglucosa pirofosfatasa bacteriana, procedimiento de obtencion, uso en la fabricacion de dispositivos de ensayo y en la obtencion de plantas y bacterias transgenicas |
WO2004007706A1 (es) * | 2002-07-15 | 2004-01-22 | Universidad Publica De Navarra | Azucar-nucleótido pirofosfatasa/fosfodiesterasa (nppasa) vegetal, procedimiento de obtención, uso en la fabricación de dispositivos de ensayo y su utilización en la obtención de plantas transgénicas |
Also Published As
Publication number | Publication date |
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US20030167536A1 (en) | 2003-09-04 |
AU3026301A (en) | 2001-08-14 |
EP1253198A1 (en) | 2002-10-30 |
CA2399149A1 (en) | 2001-08-09 |
JP2003521921A (ja) | 2003-07-22 |
AU2001230263B2 (en) | 2006-12-07 |
US7205150B2 (en) | 2007-04-17 |
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