Recombinant microorganisms configured for enhanced production of compounds such as 2-pyrone-4,6-dicarboxylic acid (PDC) and methods of using the recombinant microorganisms for the production of these compounds. The recombinant microorganisms include one or more modifications that reduce 2-pyrone-4,6-dicarboxylic acid (PDC) hydrolase activity, 4-carboxy-2-hydroxy-6-methoxy-6-oxohexa-2,4-dienoate (CHMOD) cis-trans isomerase activity, 4-carboxy-2-hydroxy-6-methoxy-6-oxohexa-2,4-dienoate (CHMOD) methyl esterase activity, and/or vanillate/3-O-methylgallate O-demethylase activity. The recombinant microorganisms can be used to generate PDC from media comprising plant-derived phenolics, such as syringyl phenolics, guaiacyl phenolics, and p-hydroxyphenyl phenolics. The plant-derived phenolics can be derived from pretreated lignin, including depolymerized lignin or other chemically altered lignin.
用于提高 2-
吡喃酮-4,6-二
羧酸(
PDC)等化合物生产的
重组微
生物以及使用
重组微
生物生产这些化合物的方法。
重组微
生物包括一种或多种可降低 2-
吡喃酮-4,6-二
羧酸(
PDC)
水解酶活性的修饰物、4-羧基-2-羟基-6-甲氧基-6-氧代己-2、4-羧基-2-羟基-6-甲氧基-6-氧代六氢-2,4-二烯酸酯(CHMOD)顺反异构酶活性、4-羧基-2-羟基-6-甲氧基-6-氧代六氢-2,4-二烯酸酯(CHMOD)甲
酯酶活性和/或
香草酸酯/
3-O-甲基没食子酸酯 O-脱甲基酶活性。
重组微
生物可用于从含有植物源
酚类(如丁香基
酚类、
愈创木酰基
酚类和对羟基苯基
酚类)的
培养基中生成
PDC。植物源
酚类可以来自预处理过的
木质素,包括解聚
木质素或其他
化学变化的
木质素。