Modifying Methylene-Tetrahydrofolate Reductase to Disrupt Electron Bifurcation in Clostridium autoethanogenum.

IF 3.1 3区 生物学 Q2 BIOCHEMICAL RESEARCH METHODS
Lucas W Mendelson, Alexander P Mueller, Jeremy Vasquez, Steven D Brown, R Adam Thompson
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引用次数: 0

Abstract

Methylene-tetrahydrofolate reductase (MTHFR) is an important enzyme for acetogenic carbon fixation, but the redox mechanism driving this reaction is not clearly understood. Previous enzymology work and energetic accounting on species such as Clostridium autoethanogenum has led to confounding results when placed in the context of in vivo experiments. In this work, we create multiple C. autoethanogenum strains harboring alternative MTHFR enzyme complexes as well as genome-scale metabolic models to better understand how these organisms conserve energy on gas substrates. The inclusion of a Type-III MTHFR unexpectedly allows for higher growth than expected and suggests the possibility of an additional redox balancing cycle employed during autotrophic growth.

修饰亚甲基-四氢叶酸还原酶以破坏自乙醇梭菌的电子分叉。
亚甲基四氢叶酸还原酶(MTHFR)是一种重要的醋酸碳固定酶,但其氧化还原机制尚不清楚。以前的酶学工作和对物种(如自产乙醇梭菌)的能量计算在体内实验的背景下导致了混淆的结果。在这项工作中,我们创建了多个C. autoethanogenum菌株,其中包含替代MTHFR酶复合物以及基因组尺度的代谢模型,以更好地了解这些生物如何在气体底物上保存能量。iii型MTHFR的加入出乎意料地允许比预期更高的生长,并表明在自养生长期间可能采用额外的氧化还原平衡循环。
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来源期刊
Biotechnology Journal
Biotechnology Journal Biochemistry, Genetics and Molecular Biology-Molecular Medicine
CiteScore
8.90
自引率
2.10%
发文量
123
审稿时长
1.5 months
期刊介绍: Biotechnology Journal (2019 Journal Citation Reports: 3.543) is fully comprehensive in its scope and publishes strictly peer-reviewed papers covering novel aspects and methods in all areas of biotechnology. Some issues are devoted to a special topic, providing the latest information on the most crucial areas of research and technological advances. In addition to these special issues, the journal welcomes unsolicited submissions for primary research articles, such as Research Articles, Rapid Communications and Biotech Methods. BTJ also welcomes proposals of Review Articles - please send in a brief outline of the article and the senior author''s CV to the editorial office. BTJ promotes a special emphasis on: Systems Biotechnology Synthetic Biology and Metabolic Engineering Nanobiotechnology and Biomaterials Tissue engineering, Regenerative Medicine and Stem cells Gene Editing, Gene therapy and Immunotherapy Omics technologies Industrial Biotechnology, Biopharmaceuticals and Biocatalysis Bioprocess engineering and Downstream processing Plant Biotechnology Biosafety, Biotech Ethics, Science Communication Methods and Advances.
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