WO2003091430A1 - GLUCOSE DEHYDROGENASE β-SUBUNIT AND DNA ENCODING THE SAME - Google Patents
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- WO2003091430A1 WO2003091430A1 PCT/JP2003/005375 JP0305375W WO03091430A1 WO 2003091430 A1 WO2003091430 A1 WO 2003091430A1 JP 0305375 W JP0305375 W JP 0305375W WO 03091430 A1 WO03091430 A1 WO 03091430A1
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Definitions
- the present invention relates to a cytochrome ⁇ 3 constituting the] 3 subunit of glucose dehydrogenase, DNA encoding the same, and uses thereof.
- Glucose dehydrogenase is useful for glucose sensors and the like using enzyme electrodes. Background art
- Biosensors using enzymes that specifically react with specific substrates are being actively developed regardless of the industrial field.
- glucose sensors which are one of the biosensors, have been actively developed in the medical field mainly for measuring methods and devices using the measuring methods.
- a glucose sensor was reported in 1962 by C 1 ark and Lyons as a biosensor that combined glucose oxidase and an oxygen electrode (L. c Clark, J. and Lyonas, C. "Elec rode system tems”).
- 105: 20-45 which has been around forty years since the first publication of the book, "Ann, ny Acad. Sci. 105: 20-45".
- glucose oxidase has been used as an enzyme in the Darcos sensor for a long time.
- glucose oxidase has high substrate specificity for glucose, is excellent in thermostability, enables mass production of enzymes, and is inexpensive to produce compared to other enzymes. .
- the high substrate specificity leads to the advantage that the enzyme does not react with sugars other than glucose, so that accurate measurements can be performed without errors in the measured values.
- the fact that the thermostability is excellent can prevent the problem that the enzyme is denatured by heat and the enzyme activity is deactivated, leading to the advantage that accurate measurement can be performed for a long period of time.
- glucose oxidase has the above advantages, but also has a problem that it is affected by, for example, dissolved oxygen, which affects measurement results.
- glucose sensor using glucose dehydrogenase hereinafter also referred to as “glucose dehydrogenase” or “GDH”.
- GDH glucose dehydrogenase
- the development of sa has been carried out.
- enzymes have also been found in microorganisms. For example, glucose dehydrogenase derived from the genus Bacillus (EC1.1.1.47) and glucose dehydrogenase derived from the genus Cryptococcus (EC1.1.1.119) are known.
- glucose dehydrogenase (EC1.1.1.47) is an enzyme that catalyzes the reaction of i3-D-glucose + NAD (P) + ⁇ D- ⁇ -darconolactone + NAD (P) H + H +
- Glucose dehydrogenase (EC1.1, 1.119) is an enzyme that catalyzes the reaction of D-glucose + NADP + ⁇ D_ (5-darconolactone + NADPH + H +), as described above.
- the microorganism-derived glucose dehydrogenase is already commercially available.
- glucose dehydrogenases have the advantage that they are not affected by the dissolved oxygen in the measurement sample. This means that even when measuring in an environment where the oxygen partial pressure is low, or when measuring a high-concentration sample that requires a large amount of oxygen, accurate measurements can be made without causing errors in the measurement results. Leads to the advantage of being able to.
- This enzyme is a hetero-oligomeric enzyme composed of a catalytic subunit ( ⁇ subunit), an electron transfer subunit () 3 subunit) and an asubunit of unknown function with high heat resistance. And at 75 ° C.
- the ⁇ and ⁇ ⁇ subunit genes have been cloned, and the microorganism belongs to Burkholderia cepacia, and) the 3 subunit N
- the terminal amino acid sequence has also been clarified (Ken Inose, Master's Thesis, Tokyo University of Agriculture and Technology (2001)).
- the structure of the 3) subunit gene has not yet been reported.
- the present inventor further proceeded with research on the G dish of the Burkholderia cepacia KS1 strain, succeeded in isolating DNA encoding the GDHjS subunit, and completed the present invention. '
- the present invention is as follows.
- (4) further includes a base sequence consisting of base numbers 121-187 of SEQ ID NO: 15 DNA according to (3).
- a method for producing a glucose dehydrogenase complex comprising culturing the transformant according to (10) to produce a glucose dehydrogenase complex as an expression product of the DNA, and collecting the resultant.
- the present inventors searched for and isolated DNA encoding a subunit of the Burkholderia 'sephasia KS1 strain.
- the strain was commissioned on September 25, 2000 to the National Institute of Advanced Industrial Science and Technology (AIST), Patent Organism Depositary Center (1-1, Tsukuba East, Ibaraki, Japan 305-8566, Japan) Deposited under the number FERM BP-7306.
- AIST National Institute of Advanced Industrial Science and Technology
- Patent Organism Depositary Center (1-1, Tsukuba East, Ibaraki, Japan 305-8566, Japan
- the DNA encoding the GDHjS subunit may be referred to as the DNA of the present invention, “jS subunit structural gene” or simply “] 3 subunit gene”.
- GDH produced by the strain Burkholderia 'sephasia KS1 is a multimeric protein containing an ⁇ subunit, a 0 subunit, and an ⁇ subunit.
- the protein of the present invention is a jS subunit among these subunits.
- GDH spectrophotometric analysis shows that the absorption wavelength of oxidized GDH is The absorption wavelengths are similar to the absorption wavelengths of alcohol dehydrogenase and aldehyde dehydrogenase made of the dehydrogenase zetocytochrome complex of Novacta sp. And Acetopa sp., And this absorption is lost by heat treatment. This, and the difference in the optimal reaction temperature of GDH between the presence and absence of [3] subunit shown below, suggested that the [beta] -subunit is composed of cytochrome C.
- the ⁇ subunit alone exhibits the following physicochemical properties.
- the i3 subunit can be obtained together with other subunits by purifying the GDH complex from a culture of the strain Burkholderia cepacia KS1 using GDH activity as an index.
- GDH activity can be measured by a method similar to the known method for measuring GDH activity. Specifically, for example, it can be measured as follows. Enzyme samples were prepared in lOmM potassium phosphate buffer (pH 7.0) containing 594 M 1-methoxyphenazine methosulfate (mPMS) and 5.94 M 2,6-dichlorophenol phenol indophenol (DCIP). Add glucose as substrate and incubate at 37. Using a spectrophotometer, follow the change in the absorbance of DCIP at 600 nm. The rate of decrease in absorbance is defined as the enzyme reaction rate.
- nucleotide sequence of the gene encoding the j8 subunit (SEQ ID NO: 15) has been elucidated by the present invention, a DNA having this nucleotide sequence or the same amino acid sequence as the amino acid sequence encoded by the DNA is encoded.
- the j3 subunit can also be produced by expressing the desired DNA in an appropriate host.
- the amino acid sequence that can be encoded by the open reading frame (0RF) of SEQ ID NO: 15 is shown in SEQ ID NO: 16.
- the N-terminal amino acid sequence of the 3 subunit was consistent with amino acids 23-38 of SEQ ID NO: 16. Therefore, amino acid numbers 1-22 are presumed to be signal peptides.
- the first amino acid residue is described as Val, but it is highly likely that it is Met, and may be missing after translation.
- the iS subunit of the present invention has an amino acid sequence consisting of amino acid numbers 23 to 425 of SEQ ID NO: 16 in an amino acid sequence of 23 to 425, and preferably 1 to 1 as long as it can function as the / 3 subunit of GDH. It may be a protein having an amino acid sequence in which 0, more preferably 1 to 5 amino acid residues have been substituted, deleted, inserted, or added.
- the function as the / 3 subunit of GDH means that it functions as cytochrome C without impairing the enzyme activity of GDH.
- the DNA of the present invention is a DNA encoding the above-mentioned 3) subunits, and can be obtained, for example, from the strain BK1 strain KS1.
- the DNA of the present invention was isolated from the chromosomal DNA of the strain Burkholderia cepacia KS1.
- the DNA of the present invention can be obtained, for example, by PCR using primers having the nucleotide sequences shown in SEQ ID NOS: 13 and 14 and using the chromosomal DNA of the strain Burkholderia * sepacia KS1 as type III. it can. Further, since the nucleotide sequence and the amino acid sequence encoded by the nucleotide sequence have been clarified by the present invention, it can also be obtained by chemical synthesis based on these sequences.
- the DNA of the present invention encodes a protein having an amino acid sequence consisting of amino acids 23 to 425 of SEQ ID NO: 16, and in this amino acid sequence, 1 to 20, preferably 1 to 10, more preferably May have an amino acid sequence in which 1 to 5 amino acid residues are substituted, deleted, inserted, or added, and may encode a protein that functions as a GDH / 3 sanit.
- DNA of the present invention examples include a DNA containing a base sequence consisting of base numbers 187 to 1398 of SEQ ID NO: 15.
- the DNA of the present invention may be a DNA that hybridizes with SEQ ID NO: 15 or a probe prepared from this sequence under stringent conditions and encodes a protein capable of functioning as a J3 subunit. Good.
- Stringent conditions include conditions in which DNAs having homology of 70%, preferably 80%, and more preferably 90% or more are hybridized, specifically, 1 XSSC, 0.1% SDS, 60 are listed.
- a GDHjS subunit can be manufactured.
- the DNA encoding the GDHjS subunit of the present invention further contains an ⁇ subunit.
- the GDH complex can be produced by expressing the DNA together with the DNA encoding the unit or, further, with the DNA encoding the subunit.
- the DNII fragment that continuously encodes the subunit and the ⁇ -subunit can be obtained by PCR using a primer having the nucleotide sequence shown in SEQ ID NOS: 18 and 19.
- microorganisms that produce GDH jS subunits or GDH complexes include intestinal bacteria such as Escherichia coli, Gram-negative bacteria such as Pseudomonas sp. And Darconobacter sp., And Bacillus bacteria such as Bacillus subtilis.
- intestinal bacteria such as Escherichia coli
- Gram-negative bacteria such as Pseudomonas sp.
- Darconobacter sp. And Bacillus bacteria such as Bacillus subtilis.
- Bacillus bacteria such as Bacillus subtilis.
- Examples include positive bacteria, yeasts such as Saccharomyces cerevisiae, and filamentous fungi such as Aspergillus niger, but are not limited thereto, and any host microorganism suitable for producing a heterologous protein can be used.
- a vector constructed for gene recombination from a plasmid or phage capable of autonomous growth in a host microorganism is suitable.
- the vector for Escherichia coli include PBR322, PUC18, pUC118, pUC19, pUC119, pTrc99A, pBluescript or the cosmid SuperCos I.
- the transfer from the vector once used for cloning of the DNA of the present invention to another recombinant vector suitable for expression or the like is performed by using a restriction enzyme or PCR method from the recombinant vector holding the DNA of the present invention. Can be easily performed by recovering and combining with other vector fragments.
- the transformation of microorganisms by these vectors is carried out by, for example, the combi- gent cell method by calcium treatment for bacteria belonging to the genus Escherichia, the protoplast method for bacteria belonging to the genus Bacillus, the KU and KUR methods for yeast, and micromanipulation for filamentous fungi.
- This can be done by a method such as the law.
- an electro-boration method can also be widely used.
- the selection as to whether or not the target recombinant vector has been transferred to the host microorganism may be made using a drug resistance marker or the like of a vector holding the target DNA as an indicator. For example, a microorganism that grows on a selective medium based on a drug resistance marker and that produces GDH may be selected.
- the culture form of the transformant may be selected in consideration of the nutritional and physiological properties of the host, and in most cases, liquid culture is used. Industrially, aeration and agitation culture is recommended. It is profitable.
- the carbon source may be any assimilable carbon compound, for example, glucose, sucrose, lactose, maltose, lactose, molasses, pyruvic acid and the like.
- the nitrogen source may be any nitrogen compound that can be used, for example, peptone, meat extract, yeast extract, casein hydrolyzate, alkali extract of soybean meal, and the like.
- phosphates, carbonates, sulfates, salts such as magnesium, potassium, iron, manganese, and zinc, specific amino acids, and specific vitamins are used as needed.
- the culture temperature can be appropriately changed within a range in which the bacteria grow and produce the protein of the present invention, but is preferably about 20 to 42.
- the cultivation time varies somewhat depending on the conditions, but the cultivation may be completed at an appropriate time in consideration of the time when GDH reaches the maximum yield, and is usually about 12 to 72 hours.
- the pH of the medium can be appropriately changed within a range in which the bacteria grow and produce the protein of the present invention, but is preferably in the range of about pH 6.0 to 9.0.
- the culture solution containing the cells producing the protein of the present invention in the culture can be directly collected and used, but generally, when the protein of the present invention is present in the culture solution, filtration is performed according to a conventional method. It is used after separating the solution containing the protein of the present invention from the microbial cells by centrifugation or the like.
- the cells are collected from the obtained culture by means such as filtration or centrifugation, and then the cells are subjected to a mechanical method or an enzymatic method such as lysozyme.
- the protein of the present invention is solubilized by adding a chelating agent such as EDTA and a surfactant, if necessary, and separated and collected as an aqueous solution.
- the protein-containing solution obtained as described above is concentrated by, for example, concentration under reduced pressure, membrane concentration, salting-out treatment with ammonium sulfate, sodium sulfate, or the like, or by fractional precipitation using a hydrophilic organic solvent such as methanol, ethanol, acetone, or the like. You only have to settle.
- Heat treatment and isoelectric point treatment are also effective purification means. Thereafter, purification by appropriately combining gel filtration with an adsorbent or a gel filtration agent, adsorption chromatography, ion exchange chromatography, and affinity chromatography is performed, whereby the purified invention of the present invention is obtained. Get protein be able to.
- the purified enzyme preparation is preferably purified to the extent that it shows a single band on electrophoresis (SDS-PAGE), but may contain ⁇ -subunit or asubunit.
- the purified enzyme obtained as described above can be distributed as a powder by, for example, freeze-drying, vacuum drying, spray drying, or the like.
- the 3-subunit and ⁇ -subunit of the present invention can be used as an enzyme electrode of a Darcos sensor.
- a carbon electrode, a gold electrode, a platinum electrode, or the like is used, and the GDH of the present invention is immobilized on the electrode.
- the immobilization method include a method using a crosslinking reagent, a method of enclosing in a polymer matrix, a method of coating with a dialysis membrane, a photocrosslinkable polymer, a conductive polymer, and a redox polymer.
- An electronic media such as a derivative may be immobilized in a polymer together with the sun or adsorbed and immobilized on an electrode, or may be used in combination.
- the glucose dehydrogenase of the present invention is immobilized on a carbon electrode using dartartaldehyde, and then treated with a reagent having an amine group to block dartartaldehyde.
- the measurement of the glucose concentration can be performed as follows. Put the buffer solution in the thermostat cell and add the media to keep the temperature constant. As the media one day, a ferricyanide rim, phenazine methosulfate and the like can be used. An electrode on which the enzyme of the present invention is immobilized is used as a working electrode, and a counter electrode (for example, a platinum electrode) and a reference electrode (for example, an Ag / AgC1 electrode) are used. After applying a constant voltage to the carbon electrode and the current becomes steady, add a sample containing glucose and measure the increase in current. The concentration of glucose in the sample can be calculated according to the calibration pressure generated by the standard concentration glucose solution.
- the GDH complex containing the three subunits of the present invention can be a component of a saccharide assay kit such as glucose.
- the kit will contain the GDH complex plus the required buffer for the assay, mediator, and calibration Includes standard solutions such as glucose for making tubes, as well as guidelines for use.
- the enzyme according to the invention can be provided in various forms, for example as a lyophilized reagent or as a solution in a suitable storage solution.
- a chromosomal gene was prepared from Burkholderia cepacia KS1 strain according to a conventional method. That is, the same strain was prepared using TL liquid medium (10 g of polypeptone, 1 g of yeast extract, 5 g of NaCl, 2 g of KH2PO4, 5 g of glucose; 1 L, pH 7.2) at 34 ° C. Shake. The grown cells were collected by a centrifuge. The cells were suspended in a solution containing 10 mM NaCl, 20 mM TrisHCl (pH 8.0), ImM EDTA, 0.5% SDS, 100 g / ml proteinase K, and treated at 50 for 6 hours. did.
- GDH purified in the same manner as in Example 2 was concentrated by freeze-drying, and developed by SDS-electrophoresis using 12.5% polyacrylamide to separate ⁇ -subunit.
- the ⁇ -subunit thus obtained was transferred to a polyvinylidene fluoride membrane, and the ⁇ -terminal amino acid sequence was determined using an amino acid sequencer (manufactured by Shimadzu Corporation, PPSQ-10).
- an amino acid sequencer manufactured by Shimadzu Corporation, PPSQ-10
- Transformants were selected from LB agar medium containing 10 g / ml neomycin and 25 g / ml ampicillin according to the antibiotic resistance on SuperCos I, neomycin resistance and ampicillin resistance.
- the obtained transformant was cultured in LB liquid medium. After harvesting these transformed cells, they were suspended in a reagent for measuring GDH activity, and clones were selected based on the dehydrogenase activity against glucose as an index. As a result, a clone showing glucose dehydrogenase activity of one strain was obtained.
- the nucleotide sequence of the inserted DNA fragment of pKS1 was determined according to restriction enzyme analysis and a conventional method. As a result, a DNA sequence encoding the N-terminal amino acid sequence of the ⁇ subunit identified in 2> was confirmed in the input DNA fragment, and an open reading frame containing this sequence was found. Was.
- the determined nucleotide sequence and the nucleotide sequence The resulting amino acid sequence is as shown in SEQ ID NOs: 1 and 3.
- SEQ ID NOs: 1 As will be described later, of the base sequence of SEQ ID NO: 1, the base sequence of base number 238 and after codes the amino acid sequence shown in SEQ ID NO: 4, and encodes the] 3-subunit. It was estimated that Reference Example 2 Production of GDH ⁇ subunit by recombinant Escherichia coli
- a vector was prepared using the structural gene of the ⁇ -subunit, and a transformant was produced using the vector.
- a gene to be inserted into a vector was prepared as follows.
- amplification was carried out by a PCR reaction so as to include a desired restriction enzyme site.
- the following set of oligonucleotide primers was used for the PCR reaction.
- Escherichia coli DH5aMCR strain was transformed with the above plasmid pFLAG-CTS / ⁇ , and colonies generated on an LB agar medium containing 50 g / ml of ampicillin were collected.
- the pKS1 inserted fragment was searched for an open reading frame upstream of the ⁇ -subunit and found to encode a polypeptide composed of 168 amino acid residues newly described in SEQ ID NO: 2.
- a structural gene consisting of 507 bases (base numbers 258 to 761 in SEQ ID NO: 1) was found. This structural gene was thought to encode an assabunit. Since the existence of the region encoding the asubunit was found upstream of the ⁇ -subunit coding region, a recombinant vector containing a polycistronic gene in which the asubunit and the ⁇ -subunit were continuous was prepared, and the vector was constructed. A transformant into which one was introduced was constructed.
- a gene to be inserted into a vector was prepared as follows.
- Amplification was carried out by PCR using a genomic fragment derived from the ⁇ S1 strain as a template, in which the structural gene of the subunit and the structural gene of the a subunit were continuous, so as to include the desired restriction enzyme site.
- the following set of oligonucleotide primers was used in the PCR reaction.
- Ncol / is the cloning site of the vector pTrc99A (Pharmacia). Inserted into Hindlll. The resulting plasmid was named pTrc99A / r + ⁇ .
- Escherichia coli DH5otMCR strain was transformed with the plasmid pTrc99A / ⁇ + ⁇ , and colonies generated on an LB agar medium containing 50 50g / ml of ampicillin were collected.
- ⁇ -subunits were produced using the Escherichia coli DH5aMCR strain transformed with the respective plasmids of pKSl pFLAG-CTS / and pTrc99A / r + ⁇ .
- Each transformant was inoculated into 3 ml of LB medium containing 50 g / ml of ampicillin, cultured at 37 for 12 hours, and cells were collected by centrifugation. After crushing the cells with a French press (1500 kgf), the membrane fraction (10 mM potassium phosphate buffer PH6.0) was separated by ultracentrifugation (4, 160 x 400 g for 90 minutes).
- Reference Example 3 Confirmation of GDH activity
- Transformant culture membrane fraction with pFLAG-CTS / ⁇ incorporating only sperm subunit has the lowest GDH activity and efficiently constructed vector
- the transformant culture membrane fraction with pTrc99A / r + Q! showed the highest GDH activity.
- ⁇ -subunit is expressed even in a transformant using a vector consisting only of the ⁇ -subunit structural gene, efficient use of a vector combining the asubunit structural gene with the ⁇ -subunit structural gene allows for efficient use. ⁇ -subunit was obtained.
- Glucose was synthesized using the glucose dehydrogenase of the present invention.
- the enzyme activity of the glucose dehydrogenase ( ⁇ -subunit) of the present invention was measured at various concentrations of glucose.
- GDH activity was measured using lOmM potassium phosphate buffer (PH7.0) containing 594 / ⁇ methylphenazine methosulfate (mPMS) and 5.94 M 2,6-dichlorophenol indophenol (DCIP). Went inside.
- the obtained base sequence contained 0RF considered to be the C-terminal of GDH and 0RF considered to be a cytochrome c structural gene consisting of 1275 bp (SEQ ID NO: 11).
- the amino acid sequence encoded by the same 0RF is shown in SEQ ID NO: 12.
- the nucleotide sequence of the obtained 12315 strain was compared with the already cloned KS1 strain a subunit base sequence. Downstream contained high nucleotide sequence homology to a nucleotide sequence encoding a signal base peptide of J2315 strain cytochrome c.
- the third 0RF (from base number 2386 of SEQ ID NO: 1) in the cloning fragment of the strain Burkholderia cepacia KS1 obtained in Reference Example 1 was ⁇ It was presumed to encode one subunit.
- the amino acid sequence at the N-terminus of the purified / 3-subunit and the five amino acid residues translated by the nucleotide sequence of nucleotides 2452 to 2466 in SEQ ID NO: 1 were also identical. 0RF was considered to code for the J3 Subunit.
- the KS1 strain was shake-cultured at 37 with 5 ml of a complete medium (0.5% polypepton, 0.3% yeast extract, 0.5% NaCl).
- a genome was extracted from the obtained cells using GennomicPrep TM Cells and Tissue DNA Isolation Kit (Amersham Pharmacia Biotech). The method followed the attached manual.
- GennomicPrep TM Cells and Tissue DNA Isolation Kit (Amersham Pharmacia Biotech). The method followed the attached manual.
- the obtained genome was subjected to phenol / cloth-form treatment, precipitated with ethanol, and then dissolved in purified water.
- the genome extracted from the KS1 strain was digested with BamHI, EcoRI, HindllL Smal, Sacl and Xhol, and the genomic fragment was recovered by ethanol precipitation.
- the genomic Ig digested with the restriction enzyme was subjected to a ligation reaction at 16, using a DNA ligation kit (Takara Shuzo Co., Ltd.).
- Forward primer (EF1 SEQ ID NO: 13) 50 pmol
- reverse primer (ER1 SEQ ID NO: 14) 50 pmol (all primers were commissioned by Invitrogen) designed from the nucleotide sequence of the N-terminal signal sequence region of KS1 strain GDHi3 subunit ), LATa q (Takara Bio Inc.) 0.5 ml, dNTP solution 8 ⁇ 1, 10X PCR buffer, add purified water to a total volume of 501, and perform PCR using Program Temp Control System PC-801 (ASTEC). went.
- the PCR reaction was performed under the following conditions. 94: 5 minutes, 98V 20 seconds, 30 seconds, 30 cycles, 726 minutes, 72 10 minutes.
- the obtained plasmid was treated with RNase, 0.6 volumes of 20% PEG6000 / 2.5M NaCl was added thereto, and left on ice for 1 hour. Thereafter, the mixture was centrifuged at 15000 rpm at 4 for 15 minutes to obtain pellets. This was washed with 70% ethanol, and the pellet was dried under vacuum. This was dissolved in purified water.
- the nucleotide sequence of the inserted fragment of the plasmid obtained in (2) was analyzed using ABI PRISM TM 310 Genetic Analyzer (PERKIN-ELMER Applised Biosystems). The partial sequence of the inserted fragment was determined from the multiple cloning site of the vector using the M13 primer, and as a result, a base sequence containing the 3-subunit N-terminus was confirmed. Using this sequence as a clue, primers were sequentially prepared and used to determine the nucleotide sequence of the inserted fragment. The result is shown in SEQ ID NO: 15. The amino acid sequence encoded by 0RF contained in this nucleotide sequence is shown in SEQ ID NO: 16. .
- 3 subunits are composed of a total of 425 amino acid residues. Compared to the N-terminal amino acid sequence already obtained, 22 of them are considered to be signal peptides. The molecular weight calculated from the amino acid sequence was 45,276 Da. . ; 3-subunit amino In the acid sequence, three binding motifs to heme (SEQ ID NO: 18) were confirmed in cytochrome c. This 0RF was located immediately downstream of 0RF of the ⁇ -subunit structural gene, and a sequence considered to be an SD sequence was present upstream of the start codon.
- the GDHjS subunit structural gene of the KS1 strain has 92.0% homology at the nucleotide sequence level and 92.2% at the amino acid level with the GDHjS subunit structural gene of the 12315 strain.
- the present invention provides a GDH / 3 subunit of a microorganism belonging to the genus Burkholderia and a DNA encoding the same.
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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DE60316424T DE60316424T2 (de) | 2002-04-26 | 2003-04-25 | Beta-untereinheit von glucosedehydrogenase und diese kodierende dna |
JP2004501977A JP4107389B2 (ja) | 2002-04-26 | 2003-04-25 | グルコース脱水素酵素βサブユニット及びそれをコードするDNA |
US10/511,796 US7094585B2 (en) | 2002-04-26 | 2003-04-25 | Glucose dehydrogenase β-subunit and DNA encoding the same |
AU2003235854A AU2003235854A1 (en) | 2002-04-26 | 2003-04-25 | GLUCOSE DEHYDROGENASE Beta-SUBUNIT AND DNA ENCODING THE SAME |
EP03719216A EP1498484B1 (en) | 2002-04-26 | 2003-04-25 | Glucose dehydrogenase beta-subunit and dna encoding the same |
US11/443,562 US7329519B2 (en) | 2002-04-26 | 2006-05-31 | Glucose dehydrogenase β subunit and DNA encoding the same |
US11/443,574 US7432094B2 (en) | 2002-04-26 | 2006-05-31 | Glucose dehydrogenase β subunit and DNA encoding the same |
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US11/443,562 Division US7329519B2 (en) | 2002-04-26 | 2006-05-31 | Glucose dehydrogenase β subunit and DNA encoding the same |
US11/443,574 Division US7432094B2 (en) | 2002-04-26 | 2006-05-31 | Glucose dehydrogenase β subunit and DNA encoding the same |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1331272A1 (en) * | 2000-10-31 | 2003-07-30 | Koji Sode | Novel glucose dehydrogenase and process for producing the dehydrogenase |
WO2005103248A1 (ja) * | 2004-04-23 | 2005-11-03 | Arkray, Inc. | 変異グルコース脱水素酵素 |
EP2077321A2 (en) | 2005-06-20 | 2009-07-08 | ARKRAY, Inc. | Mutant glucose dehydrogenase |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4102138B2 (ja) * | 2002-08-30 | 2008-06-18 | 広司 早出 | グルコース脱水素酵素の製造方法 |
JP4318473B2 (ja) | 2003-03-25 | 2009-08-26 | アークレイ株式会社 | グルコース脱水素酵素の製造法 |
CN100479750C (zh) * | 2003-09-02 | 2009-04-22 | 早出广司 | 葡萄糖传感器和葡萄糖浓度测定装置 |
JP5824205B2 (ja) | 2010-10-27 | 2015-11-25 | アークレイ株式会社 | 変異グルコース脱水素酵素 |
CN106349392A (zh) * | 2015-07-14 | 2017-01-25 | 达尔生技股份有限公司 | 一种融合多肽 |
JP6856344B2 (ja) | 2015-10-29 | 2021-04-07 | アークレイ株式会社 | 変異グルコース脱水素酵素およびその利用 |
JP7339723B2 (ja) * | 2017-07-04 | 2023-09-06 | アークレイ株式会社 | 変異型シトクロムタンパク質およびその利用 |
CN108486027A (zh) * | 2018-04-04 | 2018-09-04 | 江南大学 | 一种fad为辅基的葡萄糖脱氢酶的生产、纯化方法 |
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WO2002036779A1 (en) * | 2000-10-31 | 2002-05-10 | Koji Sode | Novel glucose dehydrogenase and process for producing the dehydrogenase |
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JP2850515B2 (ja) * | 1990-09-25 | 1999-01-27 | 東洋紡績株式会社 | グルコースデヒドロゲナーゼおよびその製造法 |
DK2330407T3 (da) * | 2001-09-14 | 2013-06-24 | Arkray Inc | Fremgangsmåde, værktøj og indretning til at måle en koncentration |
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- 2003-04-25 EP EP03719216A patent/EP1498484B1/en not_active Expired - Lifetime
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WO2002036779A1 (en) * | 2000-10-31 | 2002-05-10 | Koji Sode | Novel glucose dehydrogenase and process for producing the dehydrogenase |
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US8367385B2 (en) | 2000-10-31 | 2013-02-05 | Koji Sode | Glucose dehydrogenase and method for producing the dehydrogenase |
EP1331272A4 (en) * | 2000-10-31 | 2004-08-18 | Koji Sode | NEW GLUCOSEDEHYDROGENASE AND METHOD FOR PRODUCING THE DEHYDROGENASE |
US9187734B2 (en) | 2000-10-31 | 2015-11-17 | Koji Sode | Glucose dehydrogenase and glucose sensor with same |
EP1331272A1 (en) * | 2000-10-31 | 2003-07-30 | Koji Sode | Novel glucose dehydrogenase and process for producing the dehydrogenase |
US8715990B2 (en) | 2000-10-31 | 2014-05-06 | Koji Sode | Glucose dehydrogenase and method for producing the dehydrogenase |
US7741090B2 (en) | 2000-10-31 | 2010-06-22 | Koji Sode | Glucose dehydrogenase and process for producing the dehydrogenase |
US7867742B2 (en) | 2000-10-31 | 2011-01-11 | Koji Sode | Glucose dehydrogenase and method for producing the dehydrogenase |
US8715989B2 (en) | 2000-10-31 | 2014-05-06 | Koji Sode | Glucose dehydrogenase and method for producing the dehydrogenase |
US7960156B2 (en) | 2000-10-31 | 2011-06-14 | Koji Sode | Glucose dehydrogenase and method for producing the dehydrogenase |
JPWO2005103248A1 (ja) * | 2004-04-23 | 2008-03-13 | アークレイ株式会社 | 変異グルコース脱水素酵素 |
KR101186718B1 (ko) | 2004-04-23 | 2012-09-27 | 아크레이 가부시키가이샤 | 변이 글루코오스 탈수소효소 |
JP4639302B2 (ja) * | 2004-04-23 | 2011-02-23 | アークレイ株式会社 | 変異グルコース脱水素酵素 |
WO2005103248A1 (ja) * | 2004-04-23 | 2005-11-03 | Arkray, Inc. | 変異グルコース脱水素酵素 |
EP2077321A2 (en) | 2005-06-20 | 2009-07-08 | ARKRAY, Inc. | Mutant glucose dehydrogenase |
Also Published As
Publication number | Publication date |
---|---|
ATE373706T1 (de) | 2007-10-15 |
DE60316424D1 (de) | 2007-10-31 |
EP1498484A1 (en) | 2005-01-19 |
US7094585B2 (en) | 2006-08-22 |
US20060252123A1 (en) | 2006-11-09 |
US7329519B2 (en) | 2008-02-12 |
DE60316424T2 (de) | 2008-06-26 |
JPWO2003091430A1 (ja) | 2005-09-02 |
CN1650006A (zh) | 2005-08-03 |
US20050214766A1 (en) | 2005-09-29 |
US7432094B2 (en) | 2008-10-07 |
EP1498484A4 (en) | 2005-11-30 |
EP1498484B1 (en) | 2007-09-19 |
JP4107389B2 (ja) | 2008-06-25 |
AU2003235854A1 (en) | 2003-11-10 |
US20060211094A1 (en) | 2006-09-21 |
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