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    • 1. 发明申请
    • Fermentation Process for Preparing Coenzyme Q10 by the Recombinant Agrobacterium tumefaciens
    • 由重组农杆菌制备辅酶Q10的发酵方法
    • US20080261282A1
    • 2008-10-23
    • US12044379
    • 2008-03-07
    • Soo-Ryun CheongSang-Young KimJung-Kul LeeHyeon-Cheol LeeSuk-Jin HaBong-Seoung KooJi-Hyun Yoo
    • Soo-Ryun CheongSang-Young KimJung-Kul LeeHyeon-Cheol LeeSuk-Jin HaBong-Seoung KooJi-Hyun Yoo
    • C12P7/66
    • C12N9/1022C12P7/66
    • The present invention relates to a transformed Agrobacterium tumefaciens BNQ-pGPRX11 (Accession No. KCCM-10554) harboring a recombinant expression vector (pGPRX11). Further, the present invention also provides a fermentation method for maximum production of coenzyme Q10 using a transformed Agrobacterium tumefaciens deposited to Korean Culture Center of Microorganism with accession number KCCM-10554 comprising the steps of: i) constructing the recombinant expression vector pGPRX11 containing decaprenyl diphosphate synthase gene and 1-deoxy-D-xylulose 5-phosphate synthase gene (SEQ ID NO: 1); ii) preparing a transformed Agrobacterium tumefaciens (KCCM-10554) by harboring said recombinant expression vector pGPRX11 to the host of Agrobacterium tumefaciens BNQ 0605 (KCCM-10413); iii) growing the transformed cells on growth medium comprising 50 g/L of sucrose, 15 g/L of yeast extract, 15 g/L of peptone and 7.5 g/L of NaCl; iv) fermenting transformed cells on production medium comprising 30˜50 g/L of corn steep powder, 0.3˜0.7 g/L of KH2PO4, 0.3˜0.7 g/L of K2HPO4, 12˜18 g/L of ammonium sulfate, 1.5˜2.5 g/L of lactic acid, 0.2˜0.3 g/L of magnesium sulfate on condition that aeration rate of the medium is 0.8˜1.2 volume of air per volume of medium per minute, temperature is 30˜34°C. and pH is 6.0˜8.0; v) removing the transformed cells and other residue from the fermentation medium; and vi) separating and recovering coenzyme Q10 from the fermentation medium of step (v).
    • 本发明涉及带有重组表达载体(pGPRX11)的转化的根癌农杆菌BNQ-pGPRX11(登录号KCCM-10554)。 此外,本发明还提供了使用保藏于韩国文化中心微生物的转化的根癌土壤杆菌,使用登录号KCCM-10554最大限度地生产辅酶Q 10的发酵方法,包括以下步骤:i)构建 含有十聚丙烯酰二磷酸合成酶基因和1-脱氧-D-木酮糖-5-磷酸合酶基因(SEQ ID NO:1)的重组表达载体pGPRX11; ii)通过将所述重组表达载体pGPRX11携带到根癌农杆菌BNQ 0605(KCCM-10413)的宿主中来制备转化的根癌土壤杆菌(KCCM-10554); iii)在包含50g / L蔗糖,15g / L酵母提取物,15g / L蛋白胨和7.5g / L NaCl的生长培养基上培养转化细胞; iv)在包含30〜50g / L的玉米糠粉末,0.3〜0.7g / L的KH 2 PO 4,0.3〜0.7g的生产培养基中发酵转化的细胞 / L的HPO 4,12〜18g / L的硫酸铵,1.5〜2.5g / L的乳酸,0.2〜0.3g / L的镁 硫酸盐的条件是介质的通气速率为每分钟体积介质的0.8〜1.2体积空气,温度为30〜34℃。 pH 6.0〜8.0; v)从发酵培养基中去除转化的细胞和其它残留物; 和vi)从步骤(v)的发酵培养基中分离并回收辅酶Q 10。