Alternative Route for Glyoxylate Consumption during Growth on Two-Carbon Compounds by Methylobacterium extorquens AM1
نویسندگان
چکیده
منابع مشابه
Alternative route for glyoxylate consumption during growth on two-carbon compounds by Methylobacterium extorquens AM1.
Methylobacterium extorquens AM1 is a facultative methylotroph capable of growth on both single-carbon and multicarbon compounds. Mutants defective in a pathway involved in converting acetyl-coenzyme A (CoA) to glyoxylate (the ethylmalonyl-CoA pathway) are unable to grow on both C(1) and C(2) compounds, showing that both modes of growth have this pathway in common. However, growth on C(2) compou...
متن کاملGlyoxylate regeneration pathway in the methylotroph Methylobacterium extorquens AM1.
Most serine cycle methylotrophic bacteria lack isocitrate lyase and convert acetyl coenzyme A (acetyl-CoA) to glyoxylate via a novel pathway thought to involve butyryl-CoA and propionyl-CoA as intermediates. In this study we have used a genome analysis approach followed by mutation to test a number of genes for involvement in this novel pathway. We show that methylmalonyl-CoA mutase, an R-speci...
متن کاملCo-Consumption of Methanol and Succinate by Methylobacterium extorquens AM1
Methylobacterium extorquens AM1 is a facultative methylotrophic Alphaproteobacterium and has been subject to intense study under pure methylotrophic as well as pure heterotrophic growth conditions in the past. Here, we investigated the metabolism of M. extorquens AM1 under mixed substrate conditions, i.e., in the presence of methanol plus succinate. We found that both substrates were co-consume...
متن کاملThe ethylmalonyl-CoA pathway is used in place of the glyoxylate cycle by Methylobacterium extorquens AM1 during growth on acetate.
Acetyl-CoA assimilation was extensively studied in organisms harboring the glyoxylate cycle. In this study, we analyzed the metabolism of the facultative methylotroph Methylobacterium extorquens AM1, which lacks isocitrate lyase, the key enzyme in the glyoxylate cycle, during growth on acetate. MS/MS-based proteomic analysis revealed that the protein repertoire of M. extorquens AM1 grown on ace...
متن کاملOxalyl-coenzyme A reduction to glyoxylate is the preferred route of oxalate assimilation in Methylobacterium extorquens AM1.
Oxalate catabolism is conducted by phylogenetically diverse organisms, including Methylobacterium extorquens AM1. Here, we investigate the central metabolism of this alphaproteobacterium during growth on oxalate by using proteomics, mutant characterization, and (13)C-labeling experiments. Our results confirm that energy conservation proceeds as previously described for M. extorquens AM1 and oth...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2010
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.01166-09