Elimination of biosynthetic pathways for
Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and iso...
Ausführliche Beschreibung
Autor*in: |
Lee, Kyung-Muk [verfasserIn] Kim, Sun-Ki [verfasserIn] Lee, Ye-Gi [verfasserIn] Park, Kyung-Hye [verfasserIn] Seo, Jin-Ho [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2018 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Bioresource technology - Amsterdam [u.a.] : Elsevier Science, 1991, 268 |
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Übergeordnetes Werk: |
volume:268 |
DOI / URN: |
10.1016/j.biortech.2018.07.150 |
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Katalog-ID: |
ELV000632775 |
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520 | |a Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. | ||
650 | 4 | |a Isobutanol | |
650 | 4 | |a Metabolic engineering | |
650 | 4 | |a Gas trapping | |
700 | 1 | |a Kim, Sun-Ki |e verfasserin |4 aut | |
700 | 1 | |a Lee, Ye-Gi |e verfasserin |4 aut | |
700 | 1 | |a Park, Kyung-Hye |e verfasserin |4 aut | |
700 | 1 | |a Seo, Jin-Ho |e verfasserin |4 aut | |
773 | 0 | 8 | |i Enthalten in |t Bioresource technology |d Amsterdam [u.a.] : Elsevier Science, 1991 |g 268 |h Online-Ressource |w (DE-627)30671647X |w (DE-600)1501389-3 |w (DE-576)259271020 |x 1873-2976 |7 nnns |
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allfields |
10.1016/j.biortech.2018.07.150 doi (DE-627)ELV000632775 (ELSEVIER)S0960-8524(18)31091-5 DE-627 ger DE-627 rda eng 570 DE-600 BIODIV DE-30 fid 52.56 bkl Lee, Kyung-Muk verfasserin aut Elimination of biosynthetic pathways for 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. Isobutanol Metabolic engineering Gas trapping Kim, Sun-Ki verfasserin aut Lee, Ye-Gi verfasserin aut Park, Kyung-Hye verfasserin aut Seo, Jin-Ho verfasserin aut Enthalten in Bioresource technology Amsterdam [u.a.] : Elsevier Science, 1991 268 Online-Ressource (DE-627)30671647X (DE-600)1501389-3 (DE-576)259271020 1873-2976 nnns volume:268 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-BIODIV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 268 |
spelling |
10.1016/j.biortech.2018.07.150 doi (DE-627)ELV000632775 (ELSEVIER)S0960-8524(18)31091-5 DE-627 ger DE-627 rda eng 570 DE-600 BIODIV DE-30 fid 52.56 bkl Lee, Kyung-Muk verfasserin aut Elimination of biosynthetic pathways for 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. Isobutanol Metabolic engineering Gas trapping Kim, Sun-Ki verfasserin aut Lee, Ye-Gi verfasserin aut Park, Kyung-Hye verfasserin aut Seo, Jin-Ho verfasserin aut Enthalten in Bioresource technology Amsterdam [u.a.] : Elsevier Science, 1991 268 Online-Ressource (DE-627)30671647X (DE-600)1501389-3 (DE-576)259271020 1873-2976 nnns volume:268 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-BIODIV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 268 |
allfields_unstemmed |
10.1016/j.biortech.2018.07.150 doi (DE-627)ELV000632775 (ELSEVIER)S0960-8524(18)31091-5 DE-627 ger DE-627 rda eng 570 DE-600 BIODIV DE-30 fid 52.56 bkl Lee, Kyung-Muk verfasserin aut Elimination of biosynthetic pathways for 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. Isobutanol Metabolic engineering Gas trapping Kim, Sun-Ki verfasserin aut Lee, Ye-Gi verfasserin aut Park, Kyung-Hye verfasserin aut Seo, Jin-Ho verfasserin aut Enthalten in Bioresource technology Amsterdam [u.a.] : Elsevier Science, 1991 268 Online-Ressource (DE-627)30671647X (DE-600)1501389-3 (DE-576)259271020 1873-2976 nnns volume:268 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-BIODIV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 268 |
allfieldsGer |
10.1016/j.biortech.2018.07.150 doi (DE-627)ELV000632775 (ELSEVIER)S0960-8524(18)31091-5 DE-627 ger DE-627 rda eng 570 DE-600 BIODIV DE-30 fid 52.56 bkl Lee, Kyung-Muk verfasserin aut Elimination of biosynthetic pathways for 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. Isobutanol Metabolic engineering Gas trapping Kim, Sun-Ki verfasserin aut Lee, Ye-Gi verfasserin aut Park, Kyung-Hye verfasserin aut Seo, Jin-Ho verfasserin aut Enthalten in Bioresource technology Amsterdam [u.a.] : Elsevier Science, 1991 268 Online-Ressource (DE-627)30671647X (DE-600)1501389-3 (DE-576)259271020 1873-2976 nnns volume:268 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-BIODIV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 268 |
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10.1016/j.biortech.2018.07.150 doi (DE-627)ELV000632775 (ELSEVIER)S0960-8524(18)31091-5 DE-627 ger DE-627 rda eng 570 DE-600 BIODIV DE-30 fid 52.56 bkl Lee, Kyung-Muk verfasserin aut Elimination of biosynthetic pathways for 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. Isobutanol Metabolic engineering Gas trapping Kim, Sun-Ki verfasserin aut Lee, Ye-Gi verfasserin aut Park, Kyung-Hye verfasserin aut Seo, Jin-Ho verfasserin aut Enthalten in Bioresource technology Amsterdam [u.a.] : Elsevier Science, 1991 268 Online-Ressource (DE-627)30671647X (DE-600)1501389-3 (DE-576)259271020 1873-2976 nnns volume:268 GBV_USEFLAG_U SYSFLAG_U GBV_ELV FID-BIODIV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 268 |
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Lee, Kyung-Muk Kim, Sun-Ki Lee, Ye-Gi Park, Kyung-Hye Seo, Jin-Ho |
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Elektronische Aufsätze |
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Lee, Kyung-Muk |
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10.1016/j.biortech.2018.07.150 |
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570 |
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title_sort |
elimination of biosynthetic pathways for |
title_auth |
Elimination of biosynthetic pathways for |
abstract |
Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. |
abstractGer |
Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. |
abstract_unstemmed |
Saccharomyces cerevisiae has a natural ability to produce higher alcohols, making it a promising candidate for production of isobutanol. However, the several pathways competing with isobutanol biosynthesis lead to production of substantial amounts of l-valine and l-isoleucine in mitochondria and isobutyrate, l-leucine, and ethanol in cytosol. To increase flux to isobutanol by removing by-product formation, the genes associated with formation of l-valine (BAT1), l-isoleucine (ILV1), isobutyrate (ALD6), l-leucine (LEU1), and ethanol (ADH1) were disrupted to construct the S. cerevisiae WΔGBIALA1_2vec strain. This strain showed 8.9 and 8.6 folds increases in isobutanol concentration and yield, respectively, relative the corresponding values of the background strain on glucose medium. In a bioreactor fermentation with a gas trapping system, the WΔGBIALA1_2vec strain produced 662 mg/L isobutanol concentration with a yield of 6.71 mgisobutanol/gglucose. With elimination of the competing pathways, the WΔGBIALA1_2vec strain would serve as a platform strain for isobutanol production. |
collection_details |
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title_short |
Elimination of biosynthetic pathways for |
remote_bool |
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author2 |
Kim, Sun-Ki Lee, Ye-Gi Park, Kyung-Hye Seo, Jin-Ho |
author2Str |
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doi_str |
10.1016/j.biortech.2018.07.150 |
up_date |
2024-07-06T18:38:11.930Z |
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