代谢工程改造微生物利用甲酸研究进展
程真真, 张健, 高聪, 刘立明, 陈修来

Progress in metabolic engineering of microorganisms for the utilization of formate
CHENG Zhenzhen, ZHANG Jian, GAO Cong, LIU Liming, CHEN Xiulai
图4 重构优化甲酸利用路径
(绿色底色的化合物为路径底物,粉色底色的化合物为路径产物)Acdh—乙醛脱氢酶;Acs—乙酰辅酶A合成酶;Agt—丙氨酸-乙醛酸转氨酶;CA—碳酸酐酶;Faldh—甲醛脱氢酶;Fch—次甲基四氢叶酸环水解酶;Fdh—甲酸脱氢酶;Fthfl—甲酸四氢叶酸连接酶;Ftl—甲酸四氢叶酸连接酶;GCS—甘氨酸裂解系统;Gldh—谷氨酸脱氢酶;GlyA—丝氨酸羟甲基转移酶;Gpt—谷氨酸-丙酮酸转氨酶;Hal—HOB醛缩酶;Hat—HOB转氨酶;Hsk—高丝氨酸激酶;Lta—苏氨酸醛缩酶;Madh—苹果酸脱氢酶;Mcl—苹果酰辅酶A裂解酶;Medh—甲醇脱氢酶;Mtd—亚甲基四氢叶酸脱氢酶;Mthfs—5,10-亚甲基四氢叶酸合成酶;Mtk—苹果酸硫激酶;Oxidative PPP—氧化戊糖磷酸途径;Pfk—磷酸果糖激酶;Ppc—PEP羧化酶;Pps—PEP合成酶;Prk—磷酸核酮糖激酶;Rubisco—核酮糖-1,5-二磷酸羧化酶;Sal—丝氨酸醛缩酶;Sda—丝氨酸脱氨酶;THF—四氢叶酸;Ts—苏氨酸合成酶;Zwf—6-磷酸葡萄糖脱氢酶
Fig. 4 Reconstruction and optimization of formate-utilizing pathways
(compounds with a green background are pathway substrates; compounds with a pink background are pathway products) Acdh—acetaldehyde dehydrogenase; Acs—acetyl-CoA synthase; Agt—alanine-glyoxylate transaminase; CA—carbonic anhydrase; Faldh—formaldehyde dehydrogenase; Fch—methenyl-tetrahydrofolate cyclohydrolase; Fdh—formate dehydrogenase; Fthfl—formate-tetrahydrofolate ligase; Ftl—formate-tetrahydrofolate ligase; GCS—glycine cleavage system; Gldh—glutamate dehydrogenase; GlyA—serine hydroxymethyltransferase; Gpt—glutamate-pyruvate transaminase; Hal—4-hydroxy-2-oxobutanoate aldolase; Hat—4-hydroxy-2-oxobutanoate aminotransferase; Hsk—homoserine kinase; Lta—threonine aldolase; Madh—malate dehydrogenase; Mcl—malyl-CoA lyase; Medh—methanol dehydrogenase; Mtd—methylene-tetrahydrofolate dehydrogenase; Mthfs—5,10-methylene-tetrahydrofolate synthase; Mtk—malate thiokinase; Oxidative PPP—Oxidative pentose-phosphate pathway; Pfk—phosphofructokinase; Ppc—phosphoenolpyruvate carboxylase; Pps—phosphoenolpyruvate synthase; Prk—phosphoribulo kinase; Rubisco—ribulose-1,5-bisphosphate carboxylase; Sal—serine aldolase; Sda—serine deaminase; THF—tetrahydrofolate; Ts—threonine synthase; Zwf—glucose-6-phosphate dehydrogenase