ANALYSIS AND ENHANCEMENT OF METABOLIC PATHWAYS FOR METHANOGENESIS
申请人:Havemen Shelley
公开号:US20100035309A1
公开(公告)日:2010-02-11
Processes for biogenic production of a hydrogen-carbon-containing fluid from a hydrocarbon containing formation are described. The processes may include providing in the formation an anaerobic microorganism consortium containing one or more enzymes to activate a starting hydrocarbon by an addition of a chemical group to the hydrocarbon. The processes may further include converting the activated hydrocarbon into the hydrogen-carbon-containing fluid through one or more intermediate hydrocarbons, and recovering the hydrogen-carbon-containing fluid from the formation.
MICROBIAL PRODUCTION OF 3,4-DIHYDROXYBUTYRATE (3,4-DHBA), 2,3- DIHYDROXYBUTYRATE (2,3-DHBA) AND 3-HYDROXYBUTYROLACTONE (3-HBL)
申请人:Dhamankar Himanshu Hemant
公开号:US20120226055A1
公开(公告)日:2012-09-06
The invention relates to recombinant cells and their use in the production of 3,4-dihydroxybutyrate, 2,3-dihydroxybutyrate and 3-hydroxybutyrolactone.
US8669379B2
申请人:——
公开号:US8669379B2
公开(公告)日:2014-03-11
[EN] MICROBIAL PRODUCTION OF 3,4-DIHYDROXYBUTYRATE (3,4-DHBA), 2,3-DIHYDROXYBUTYRATE (2,3-DHBA) AND 3-HYDROXYBUTYROLACTONE (3-HBL)<br/>[FR] PRODUCTION MICROBIENNE DE 3,4-DIHYDROXYBUTYRATE (3,4-DHBA), DE 2,3-DIHYDROXYBUTYRATE (2,3-DHBA) ET DE 3-HYDROXYBUTYROLACTONE (3-HBL)
申请人:MASSACHUSETTS INST TECHNOLOGY
公开号:WO2012116307A1
公开(公告)日:2012-08-30
The invention relates to recombinant cells and their use in the production of 3,4- dihydroxybutyrate, 2,3- dihydroxybutyrate and 3-hydroxybutyrolactone.
Discovery and Engineering of Pathways for Production of α-Branched Organic Acids
作者:Michael R. Blaisse、Hongjun Dong、Beverly Fu、Michelle C. Y. Chang
DOI:10.1021/jacs.7b07400
日期:2017.10.18
branch using a propionyl-CoA extenderunit. Engineering synthetic pathways for production of α-methyl acids in Escherichia coli using these enzymes allows the construction of microbial strains that produce either chiral 2-methyl-3-hydroxy acids (1.1 ± 0.2 g L-1) or branched enoic acids (1.12 ± 0.06 g L-1) in the presence of a dehydratase at 44% and 87% yield of fed propionate, respectively. In vitro characterization
基于细胞的合成为从简单的可再生碳源制备小分子提供了许多机会,通过将多个反应伸缩到一个发酵步骤中。该领域的一个挑战是开发酶促碳-碳键形成循环,使目标结构模块化断开为细胞构建块。在这方面,基于硫解酶催化酰基辅酶 A (CoA) 底物之间初始碳-碳键形成步骤的合成途径为生物合成提供了通用途径,但目前此类途径的底物多样性有限。在本报告中,我们描述了参与蛔虫蛔虫中分支酸产生的硫解酶-酮还原酶对的鉴定和生化表征,这证明了使用丙酰辅酶 A 扩展单元形成具有 α-甲基支链的产物的选择性。使用这些酶在大肠杆菌中设计用于生产 α-甲基酸的工程合成途径,可以构建生产手性 2-甲基-3-羟基酸 (1.1 ± 0.2 g L-1) 或支链烯酸 (1.12 ± 0.06 g L-1) 在脱水酶的存在下,进料丙酸盐的产率分别为 44% 和 87%。体外表征和体内分析表明,酮还原酶是选择性的关键驱动因素,即使与高度偏爱无