JP4847775B2 - 安定なポリオール脱水素酵素組成物 - Google Patents
安定なポリオール脱水素酵素組成物 Download PDFInfo
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- JP4847775B2 JP4847775B2 JP2006092133A JP2006092133A JP4847775B2 JP 4847775 B2 JP4847775 B2 JP 4847775B2 JP 2006092133 A JP2006092133 A JP 2006092133A JP 2006092133 A JP2006092133 A JP 2006092133A JP 4847775 B2 JP4847775 B2 JP 4847775B2
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- Prior art keywords
- polyol dehydrogenase
- polyol
- compound
- present
- dehydrogenase
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- AIUDWMLXCFRVDR-UHFFFAOYSA-N dimethyl 2-(3-ethyl-3-methylpentyl)propanedioate Chemical class CCC(C)(CC)CCC(C(=O)OC)C(=O)OC AIUDWMLXCFRVDR-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- VHJLVAABSRFDPM-QWWZWVQMSA-N dithiothreitol Chemical compound SC[C@@H](O)[C@H](O)CS VHJLVAABSRFDPM-QWWZWVQMSA-N 0.000 description 1
- 238000010799 enzyme reaction rate Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
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- 238000007710 freezing Methods 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 108010090622 glycerol oxidase Proteins 0.000 description 1
- 108010054790 glycerol-3-phosphate oxidase Proteins 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000008164 mustard oil Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- FSVCQIDHPKZJSO-UHFFFAOYSA-L nitro blue tetrazolium dichloride Chemical compound [Cl-].[Cl-].COC1=CC(C=2C=C(OC)C(=CC=2)[N+]=2N(N=C(N=2)C=2C=CC=CC=2)C=2C=CC(=CC=2)[N+]([O-])=O)=CC=C1[N+]1=NC(C=2C=CC=CC=2)=NN1C1=CC=C([N+]([O-])=O)C=C1 FSVCQIDHPKZJSO-UHFFFAOYSA-L 0.000 description 1
- HEGSGKPQLMEBJL-RKQHYHRCSA-N octyl beta-D-glucopyranoside Chemical compound CCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O HEGSGKPQLMEBJL-RKQHYHRCSA-N 0.000 description 1
- 229940092253 ovalbumin Drugs 0.000 description 1
- 235000019319 peptone Nutrition 0.000 description 1
- 229940066779 peptones Drugs 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 239000008055 phosphate buffer solution Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229940048914 protamine Drugs 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- NRHMKIHPTBHXPF-TUJRSCDTSA-M sodium cholate Chemical compound [Na+].C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC([O-])=O)C)[C@@]2(C)[C@@H](O)C1 NRHMKIHPTBHXPF-TUJRSCDTSA-M 0.000 description 1
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- CIJQGPVMMRXSQW-UHFFFAOYSA-M sodium;2-aminoacetic acid;hydroxide Chemical compound O.[Na+].NCC([O-])=O CIJQGPVMMRXSQW-UHFFFAOYSA-M 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
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- 150000003626 triacylglycerols Chemical class 0.000 description 1
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 1
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- 238000005199 ultracentrifugation Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
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Landscapes
- Enzymes And Modification Thereof (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Description
PQQ依存性PDHの酵素活性は、50μM DCIP、0.2mM 5−メチルフェナジニウムメチルスルファート(PMS)、400mM グリセロールを含んだ0.2%トライトン(Triton)X−100を含む10mMリン酸緩衝液pH 7.0中に、酵素溶液を加え、酵素と基質の反応をDCIPの600nmの吸光度変化によって追跡し、その吸光度の減少速度を酵素の反応速度とした。この際、1分間に1μmolのDCIPが還元される酵素活性を1単位(U)とした。なお、DCIPのpH7.0におけるモル吸光係数は、16.3mM−1とした。
ソルビトール 2質量%、酵母エキス 0.3質量%、肉エキス 0.3質量%、コーン・スティープ・リカー 0.3質量%、ポリペプトン 1質量%、尿素 0.1質量%、KH2PO4 0.1質量%、MgSO4・7H2O 0.02質量%、CaCl2 0.1質量%、pH 7.0よりなる培地400mlを調製し、500ml容の坂口フラスコに一本あたり該培地100mlずつを移し、121℃、20分間オートクレーブした。
実施例1に記載の方法と同様にして得られた酵素組成物を、37℃で1週間、インキュベートした後の酵素活性を測定した。この際、凍結乾燥直後の酵素活性を比較対照として測定した。
Claims (10)
- 補欠分子族としてピロロキノリンキノンを含むポリオール脱水素酵素、2価の金属イオンを有する化合物、非還元糖、及び界面活性剤を含む、凍結乾燥によって調製された安定なポリオール脱水素酵素組成物であって、
前記2価の金属イオンを有する化合物は、マグネシウムイオン(Mg 2+ )を有する化合物及びカルシウムイオン(Ca 2+ )を有する化合物からなる群より選択される少なくとも一種であり、
前記非還元糖は、ラフィノース及びトレハロースの少なくとも一方を含み、
前記界面活性剤は、トライトン(Triton)X−100である、凍結乾燥によって調製された安定なポリオール脱水素酵素組成物。 - 前記ポリオール脱水素酵素は、グリセロール脱水素酵素であることを特徴とする、請求項1に記載の安定なポリオール脱水素酵素組成物。
- 前記2価の金属イオンを有する化合物は、前記ポリオール脱水素酵素の対タンパク質量当たり、1〜30質量%の量で存在する、請求項1または2に記載の安定なポリオール脱水素酵素組成物。
- 前記非還元糖は、前記ポリオール脱水素酵素の対タンパク質量当たり、1〜150質量%の量で存在する、請求項1〜3のいずれか1項に記載の安定なポリオール脱水素酵素組成物。
- 前記界面活性剤は、前記ポリオール脱水素酵素の対タンパク質量当たり、20〜1000質量%の量で存在する、請求項1〜4のいずれか1項に記載の安定なポリオール脱水素酵素組成物。
- 請求項1〜5のいずれか1項に記載の安定なポリオール脱水素酵素組成物を含む、ポリオール測定試薬。
- 請求項2〜5のいずれか1項に記載の安定なポリオール脱水素酵素組成物をグリセロールと反応させる段階を有する、グリセロールの定量法。
- 補欠分子族としてピロロキノリンキノンを含むポリオール脱水素酵素に、2価の金属イオンを有する化合物、非還元糖、及び界面活性剤を安定化剤として添加する段階を有し、
前記2価の金属イオンを有する化合物は、マグネシウムイオン(Mg 2+ )を有する化合物及びカルシウムイオン(Ca 2+ )を有する化合物からなる群より選択される少なくとも一種であり、
前記非還元糖は、ラフィノース及びトレハロースの少なくとも一方を含み、
前記界面活性剤は、トライトン(Triton)X−100である、凍結乾燥によって調製されたポリオール脱水素酵素組成物の安定化方法。 - 凍結乾燥によるポリオール脱水素酵素の失活が抑制される、請求項8に記載の方法。
- 凍結乾燥後のポリオール脱水素酵素の安定性が向上される、請求項8または9に記載の方法。
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