CN114752589A - 谷氨酸脱羧酶突变体及在生产γ-氨基丁酸中的应用 - Google Patents
谷氨酸脱羧酶突变体及在生产γ-氨基丁酸中的应用 Download PDFInfo
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- CN114752589A CN114752589A CN202210677091.7A CN202210677091A CN114752589A CN 114752589 A CN114752589 A CN 114752589A CN 202210677091 A CN202210677091 A CN 202210677091A CN 114752589 A CN114752589 A CN 114752589A
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- 229910052927 chalcanthite Inorganic materials 0.000 description 1
- 238000010367 cloning Methods 0.000 description 1
- 239000005515 coenzyme Substances 0.000 description 1
- 239000002299 complementary DNA Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000006114 decarboxylation reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910000396 dipotassium phosphate Inorganic materials 0.000 description 1
- PXEDJBXQKAGXNJ-QTNFYWBSSA-L disodium L-glutamate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](N)CCC([O-])=O PXEDJBXQKAGXNJ-QTNFYWBSSA-L 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000006911 enzymatic reaction Methods 0.000 description 1
- 229910052564 epsomite Inorganic materials 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 102000034287 fluorescent proteins Human genes 0.000 description 1
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- 150000004676 glycans Chemical class 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 206010022437 insomnia Diseases 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229930027917 kanamycin Natural products 0.000 description 1
- SBUJHOSQTJFQJX-NOAMYHISSA-N kanamycin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SBUJHOSQTJFQJX-NOAMYHISSA-N 0.000 description 1
- 229960000318 kanamycin Drugs 0.000 description 1
- 229930182823 kanamycin A Natural products 0.000 description 1
- 229910000357 manganese(II) sulfate Inorganic materials 0.000 description 1
- 239000012092 media component Substances 0.000 description 1
- 229910052603 melanterite Inorganic materials 0.000 description 1
- 238000009629 microbiological culture Methods 0.000 description 1
- 230000027939 micturition Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 150000002772 monosaccharides Chemical class 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 230000009251 neurologic dysfunction Effects 0.000 description 1
- 208000015015 neurological dysfunction Diseases 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 239000002777 nucleoside Substances 0.000 description 1
- 150000003833 nucleoside derivatives Chemical class 0.000 description 1
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- 229920001184 polypeptide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 230000004481 post-translational protein modification Effects 0.000 description 1
- 230000001124 posttranscriptional effect Effects 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
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- 238000001742 protein purification Methods 0.000 description 1
- 238000001243 protein synthesis Methods 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 108010054624 red fluorescent protein Proteins 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 102200125465 rs104894565 Human genes 0.000 description 1
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- 102220057403 rs730881761 Human genes 0.000 description 1
- 102220059221 rs749091984 Human genes 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
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- 238000000527 sonication Methods 0.000 description 1
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- 108091005946 superfolder green fluorescent proteins Proteins 0.000 description 1
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- 235000019156 vitamin B Nutrition 0.000 description 1
- 239000011720 vitamin B Substances 0.000 description 1
- 239000011691 vitamin B1 Substances 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
Images
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- C12Y401/00—Carbon-carbon lyases (4.1)
- C12Y401/01—Carboxy-lyases (4.1.1)
- C12Y401/01015—Glutamate decarboxylase (4.1.1.15)
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Abstract
Description
菌株 | 突变位点 | GABA(g/L) |
GAD WT | / | 0.14 |
GAD MUT 1 | D38K | 1.02 |
GAD MUT 2 | D38N | 0.95 |
GAD MUT 3 | D38Y | 1.20 |
GAD MUT 4 | D92K | 2.01 |
GAD MUT 5 | D92N | 2.62 |
GAD MUT 6 | D92H | 2.10 |
GAD MUT 7 | D118A | 0.85 |
GAD MUT 8 | D118V | 0.64 |
GAD MUT 9 | D118N | 0.65 |
GAD MUT 10 | D202N | 0.63 |
GAD MUT 11 | D202M | 0.57 |
GAD MUT 12 | D202Q | 0.89 |
GAD MUT 13 | D301Y | 0.76 |
GAD MUT 14 | D301K | 0.86 |
GAD MUT 15 | D301N | 0.87 |
GAD MUT 16 | D371S | 0.76 |
GAD MUT 17 | D371N | 0.83 |
GAD MUT 18 | D371Y | 0.86 |
GAD MUT 19 | D432L | 0.98 |
GAD MUT 20 | D432N | 0.73 |
GAD MUT 21 | D432V | 1.06 |
GAD MUT 22 | L451* | 2.11 |
GAD MUT 23 | L451N | 2.03 |
GAD MUT 24 | L451L | 1.98 |
GAD MUT 25 | K457Q | 1.86 |
GAD MUT 26 | K457N | 0.82 |
GAD MUT 27 | K457* | 1.85 |
GAD MUT 28 | K457S | 1.76 |
GAD MUT 29 | Y461L | 0.89 |
GAD MUT 30 | Y461Y | 0.78 |
GAD MUT 31 | Y461* | 2.18 |
GAD MUT 32 | Y461V | 1.86 |
GAD MUT 33 | H51L/Y461Q | 2.56 |
GAD MUT 34 | H51D/Y461* | 2.51 |
GAD MUT 35 | H51Q/Y461P | 2.76 |
GAD MUT 36 | H51Q/Y461* | 2.43 |
GAD MUT 37 | H51N/Y461* | 2.34 |
GAD MUT 38 | H121N/ H467Q | 2.56 |
GAD MUT 39 | H121L/ H467Y | 1.69 |
GAD MUT 40 | H121Y/ H467Y | 1.89 |
GAD MUT 41 | H121A/ H467* | 1.45 |
GAD MUT 42 | I206N/H467Y | 1.68 |
GAD MUT 43 | I206Y/H467Q | 1.76 |
GAD MUT 44 | I206H/H467A | 1.86 |
GAD MUT 45 | I206V/H467P | 2.32 |
GAD MUT 46 | F355K/ L451Y | 1.37 |
GAD MUT 47 | F355Y/ L451N | 2.76 |
GAD MUT 48 | F355L/ L451* | 2.36 |
GAD MUT 49 | F355Y/ L451Q | 2.78 |
GAD MUT 50 | F355L/ L451N | 2.69 |
GAD MUT 51 | T459N/H467N | 1.89 |
GAD MUT 52 | T459M/H467Y | 1.66 |
GAD MUT 53 | T459Y/H467L | 1.53 |
GAD MUT 54 | V68N/Q96Y/N186A | 1.24 |
GAD MUT 55 | V68A/Q96L/N186S | 1.03 |
GAD MUT 56 | V68A/Q96N/N186L | 1.29 |
GAD MUT 57 | V68V/Q96P/N186* | 1.57 |
GAD MUT 58 | T120N/L436V/L451* | 1.56 |
GAD MUT 58 | T120V/L436N/L451* | 1.79 |
GAD MUT 60 | T120A/L436S/L451* | 1.56 |
GAD MUT 61 | T120L/L436Y/L451* | 1.58 |
GAD MUT 62 | I89N/ F355L/D432L /L451* | 2.76 |
GAD MUT 63 | I89M/ F355Y/D432A /L451* | 2.85 |
GAD MUT 64 | I89Q/ F355N/D432V /L451* | 3.02 |
GAD MUT 65 | I89V/ F355Y/D432N /L451* | 3.12 |
GAD MUT 66 | I89L/ F355V/D432L /L451* | 3.21 |
GAD MUT 67 | I89Y/ P268S/F355Q/D432Q/H435A/L451* | 4.20 |
GAD MUT 68 | I89V/ P268T/F355Y/D432N/H435Q/L451* | 4.08 |
GAD MUT 69 | I89S/ P268N/F355N/D432L/H435P/L451* | 3.98 |
GAD MUT 70 | I89N/ P268M/F355A/D432A/H435L/L451* | 3.86 |
GAD MUT 71 | I89P/ P268Q/F355S/D432Y/H435N/L451* | 3.56 |
GAD MUT 72 | I89N/D92L/P268S/F355S/D432H/H435P/L451* | 3.96 |
GAD MUT 73 | I89V/D92N/P268T/F355Y/D432N/H435Q/L451* | 3.93 |
GAD MUT 74 | I89M/D92M/P268L/F355A/D432A/H435V/L451* | 4.02 |
GAD MUT 75 | I89S/D92Y/P268P/F355Q/D432MH435L/L451* | 4.56 |
GAD MUT 76 | I89L/D92L/P268Q/F355N/D432Q/H435Y/L451* | 4.37 |
GAD MUT 77 | I89V/S153A/P268T/F355Y/D432N/H435Q/L451* | 4.50 |
GAD MUT 78 | I89A/D92Q/P268N/F355L/D432N/H435A/L451* | 4.53 |
GAD MUT 79 | I89M/S153A/P268T/F355Y/D432Y/H435N/L451* | 4.86 |
GAD MUT 80 | I89Y/S153M/P268Q/F355A/D432Q/H435Y/L451* | 4.76 |
GAD MUT 81 | I89S/D92P/S153Q/P268V/F355P/D432M/H435L/L451* | 4.38 |
GAD MUT 82 | I89V/D92N/S153A/P268T/F355Y/D432N/H435Q/L451* | 4.36 |
GAD MUT 83 | I89V/D92S/S153P/P268M/F355L/D432Q/H435Y/L451* | 4.53 |
GAD MUT 84 | I89V/D92A/S153N/P268A/F355Q/D432P/H435P/L451* | 4.58 |
GAD MUT 85 | I89N/D92M/S153Q/P268S/F355N/D432V/H435A/L451* | 4.76 |
GAD MUT 86 | I89Y/D92N/S153Y/P268L/F355N/D432S/H435Q/L451* | 4.53 |
GAD MUT 87 | I89V/D92P/S153L/P268Q/F355L/D432A/H435N/L451* | 4.87 |
GAD MUT 88 | I89P/D92Y/S153Q/P268N/F355Y/D432M/H435M/L451* | 4.56 |
GAD MUT 89 | I89M/D92L/S153S/P268Y/F355V/D432Y/H435S/L451* | 4.96 |
GAD MUT 90 | I89A/D92N/S153A/P268T/F355Q/D432N/H435Q/L451* | 4.57 |
GAD MUT 91 | I89N/D92Q/S153L/P268T/F355N/D432N/H435A/L451* | 4.32 |
GAD MUT 92 | I89Y/D92Y/S153Q/P268T/F355V/D432N/H435S/L451* | 4.23 |
GAD MUT 93 | I89L/D92P/S153N/P268T/F355P/D432N/H435P/L451* | 4.25 |
GAD MUT 94 | I89A/D92A/S153A/P268T/F355M/D432N/H435Y/L451* | 4.26 |
GAD MUT 95 | I89V/D92N/S153T/P268T/F355Y/D432N/H435Q/L451* | 4.30 |
GAD MUT 96 | I89Q/D92Y/S153N/P268N/F355M/D432Q/H435Y/L451* | 4.29 |
GAD MUT 97 | I89N/D92A/S153Q/P268Y/F355V/D432L/H435N/L451* | 4.57 |
GAD MUT 98 | I89L/D92S/S153L/P268L/F355Q/D432Y/H435M/L451* | 4.68 |
GAD MUT 99 | I89Y/D92N/S153Y/P268Q/F355N/D432V/H435Y/L451* | 4.53 |
GAD MUT 100 | I89P/D92M/S153V/P268N/F355S/D432P/H435L/L451* | 4.16 |
GAD MUT 101 | I89V/D92N/S153P/P268M/F355Y/D432M/H435S/L451* | 4.37 |
GAD MUT 102 | I89V/D92V/S153A/P268T/F355P/D432S/H435A/L451* | 4.39 |
GAD MUT 103 | I89V/D92Y/S153A/P268Y/F355L/D432A/H435P/L451* | 4.57 |
GAD MUT 104 | I89V/D92L/S153S/P268V/F355Q/D432N/H435V/L451* | 4.56 |
GAD MUT 105 | I89V/D92Q/S153L/P268P/F355N/D432L/H435L/L451* | 4.27 |
GAD MUT 106 | I89Q/E93N/S153N/P268M/D301A/F355Y/D432N/H435N/L451* | 4.37 |
GAD MUT 107 | I89N/E93M/S153Q/P268A/D301S/F355Q/D432A/H435Y/L451* | 4.26 |
GAD MUT 108 | I89P/E93S/S153Y/P268S/D301M/F355S/D432N/H435P/L451* | 4.86 |
GAD MUT 109 | I89A/E93A/S153M/P268N/D301V/F355M/D432S/H435M/L451* | 4.23 |
GAD MUT 110 | I89M/E93Y/S153A/P268Q/D301Q/F355A/D432V/H435S/L451* | 4.86 |
GAD MUT 111 | I89V/E93Q/S153T/P268T/D301N/F355Y/D432N/H435Q/L451* | 4.31 |
GAD MUT 112 | I89N/E93Q/S153L/P268N/D301S/F355N/D432A/H435S/L451* | 5.36 |
GAD MUT 113 | I89Q/E93N/S153Q/P268Q/D301Q/F355N/D432M/H435P/L451* | 4.23 |
GAD MUT 114 | I89P/E93L/S153N/P268L/D301Y/F355M/D432Q/H435M/L451* | 4.52 |
GAD MUT 115 | I89M/E93Y/S153A/P268Y/D301M/F355V/D432Y/H435Q/L451* | 4.38 |
GAD MUT 116 | I89A/E93M/S153S/P268V/D301P/F355A/D432L/H435N/L451* | 4.26 |
GAD MUT117 | I89S/E93A/S153P/P268M/D301V/F355P/D432N/H435P/L451* | 4.53 |
GAD MUT 118 | I89L/E93S/S153V/P268S/D301P/F355Q/D432N/H435A/L451* | 4.86 |
GAD MUT 119 | I89Q/E93N/S153L/P268A/D301A/F355V/D432N/H435M/L451* | 4.56 |
GAD MUT 120 | I89L/E93Q/S153T/P268T/D301M/F355Y/D432N/H435Y/L451* | 4.76 |
GAD MUT 121 | I89V/E93P/S153M/P268T/D301N/F355L/D432N/H435Q/L451* | 4.59 |
GAD MUT12 2 | I89M/E93Q/S153T/P268V/D301S/F355Y/D432N/H435Y/L451* | 4.53 |
GAD MUT 123 | D38N/I89V/D92N//E93N/S153T/D202Q/P268T/E294S/D301Q/F355V/D432Q/H435Y/L451* | 4.62 |
GAD MUT 124 | D38Q/I89S/D92Y//E93Q/S153N/D202P/P268V/E294N/D301A/F355Q/D432V/H435L/L451* | 4.65 |
GAD MUT 125 | D38V/I89A/D92Q//E93P/S153S/D202S/P268N/E294Y/D301S/F355A/D432M/H435S/L451* | 4.86 |
GAD MUT 126 | D38Q/I89Q/D92S//E93V/S153N/D202Q/P268N/E294A/D301Q/F355Q/D432S/H435L/L451* | 4.96 |
GAD MUT 127 | D38S/I89M/D92L//E93M/S153L/D202M/P268S/E294P/D301M/F355N/D432M/H435Y/L451* | 4.87 |
GAD MUT 128 | D38N/I89V/D92N//E93Q/S153T/D202N/P268T/E294R/D301N/F355Y/D432N/H435Q/L451* | 5.12 |
GAD MUT 129 | D38M/I89A/D92Q//E93V/S153M/D202S/P268V/E294L/D301V/F355A/D432V/H435V/L451* | 5.11 |
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