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    • 3. 发明申请
    • METHOD FOR THE FERMENTATIVE PRODUCTION OF PYRUVATE
    • 用于发酵生产聚乙二醇的方法
    • WO03000913A3
    • 2003-05-30
    • PCT/DE0202144
    • 2002-06-12
    • FORSCHUNGSZENTRUM JUELICH GMBHBOTT MICHAELGERHARZ TANJATAKORS RALFZELIC BRUNO
    • BOTT MICHAELGERHARZ TANJATAKORS RALFZELIC BRUNO
    • C12N1/21C12P7/40
    • C12P7/40
    • The invention relates to a method for the fermentative production of pyruvate. The chemical methods for producing pyruvate known in prior art are technically complex and cost-intensive. The disadvantage of known biological methods is that the substrates are not converted 100 % into pyruvate and the product yield therefore suffers. The inventive method enables pyruvate to be produced microbially with a near 100 % conversion of the substrate. Increased production of pyruvate can be achieved by using micro-organisms that have been genetically modified, i.e. by the deletion or reduced expressed of nucleotide sequences that code for the pyruvate-dehydrogenase complex, pyruvate decarboxylase, pyruvate ferredoxin-oxidoreductase, pyruvate flavodoxin-oxidoreductase, pyruvate formiate-lyase, phosphoenolpyruvate synthetase and/or for pyruvate oxidase.
    • 本发明涉及发酵生产丙酮酸的方法。 现有技术中已知的用于制备丙酮酸的化学方法在技术上是复杂且昂贵的。 已知的生物过程的缺点在于,在基板不被转换为100%为丙酮酸并因此产品的成品率变差。 利用本发明的方法,有可能对微生物产生丙酮酸与衬底的几乎100%的转化率。 通过使用经过基因改造的微生物,d。 小时。 缺失或编码丙酮酸脱氢酶复合物的丙酮酸脱羧酶的核苷酸序列的表达降低,丙酮酸:铁氧还蛋白氧化还原酶,所述Pyruuvat:黄素氧还蛋白氧化还原酶,丙酮酸甲酸裂解酶,磷酸烯醇丙酮酸合成酶,和 或编码丙酮酸氧化酶,可以实现增加的丙酮酸生产。