A genomic perspective on the potential of Actinobacillus succinogenes for industrial succinate production

BMC Genomics

Research Article

Shivakumara Siddaramappa¹  Jean F Challacombe¹  Alicia Clum²  Alla L Lapidus²  Stephen R Lowry²  Anastasia A McKinlay³  Maris Laivenieks⁴  Bryan D Schindler⁴  Claire Vieille⁵  James B McKinlay⁶  Victoria Harkins⁷  Kirk B Burkhart⁸ 

[1] DOE Joint Genome Institute and Los Alamos National Laboratory, 87545, Los Alamos, NM, USA;DOE Joint Genome Institute, 94598, Walnut Creek, CA, USA;Department of Genome Sciences & Medicine, University of Washington, 98195, Seattle, WA, USA;Department of Microbiology and Molecular Genetics, 2215 Biomedical Biophysical Sciences building, Michigan State University, 48824, East Lansing, MI, USA;Department of Microbiology and Molecular Genetics, 2215 Biomedical Biophysical Sciences building, Michigan State University, 48824, East Lansing, MI, USA;Department of Biochemistry and Molecular Biology, Michigan State University, 48824, East Lansing, MI, USA;Department of Microbiology and Molecular Genetics, 2215 Biomedical Biophysical Sciences building, Michigan State University, 48824, East Lansing, MI, USA;Department of Microbiology, University of Washington in Seattle, 98195, WA, USA;Department of Microbiology and Molecular Genetics, 2215 Biomedical Biophysical Sciences building, Michigan State University, 48824, East Lansing, MI, USA;Department of Zoology, Michigan State University, 48824, East Lansing, MI, USA;Department of Microbiology and Molecular Genetics, 2215 Biomedical Biophysical Sciences building, Michigan State University, 48824, East Lansing, MI, USA;Laboratory of Genetics, University of Wisconsin, 53706, Madison, WI, USA;

关键词: Basic Local Alignment Search Tool;    Cluster Regularly Interspaced Short Palindromic Repeat;    Succinate Production;    Cytolethal Distend Toxin;    Natural Competence;   

DOI  :  10.1186/1471-2164-11-680

 received in 2010-05-04, accepted in 2010-11-30,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundSuccinate is produced petrochemically from maleic anhydride to satisfy a small specialty chemical market. If succinate could be produced fermentatively at a price competitive with that of maleic anhydride, though, it could replace maleic anhydride as the precursor of many bulk chemicals, transforming a multi-billion dollar petrochemical market into one based on renewable resources. Actinobacillus succinogenes naturally converts sugars and CO2 into high concentrations of succinic acid as part of a mixed-acid fermentation. Efforts are ongoing to maximize carbon flux to succinate to achieve an industrial process.ResultsDescribed here is the 2.3 Mb A. succinogenes genome sequence with emphasis on A. succinogenes's potential for genetic engineering, its metabolic attributes and capabilities, and its lack of pathogenicity. The genome sequence contains 1,690 DNA uptake signal sequence repeats and a nearly complete set of natural competence proteins, suggesting that A. succinogenes is capable of natural transformation. A. succinogenes lacks a complete tricarboxylic acid cycle as well as a glyoxylate pathway, and it appears to be able to transport and degrade about twenty different carbohydrates. The genomes of A. succinogenes and its closest known relative, Mannheimia succiniciproducens, were compared for the presence of known Pasteurellaceae virulence factors. Both species appear to lack the virulence traits of toxin production, sialic acid and choline incorporation into lipopolysaccharide, and utilization of hemoglobin and transferrin as iron sources. Perspectives are also given on the conservation of A. succinogenes genomic features in other sequenced Pasteurellaceae.ConclusionsBoth A. succinogenes and M. succiniciproducens genome sequences lack many of the virulence genes used by their pathogenic Pasteurellaceae relatives. The lack of pathogenicity of these two succinogens is an exciting prospect, because comparisons with pathogenic Pasteurellaceae could lead to a better understanding of Pasteurellaceae virulence. The fact that the A. succinogenes genome encodes uptake and degradation pathways for a variety of carbohydrates reflects the variety of carbohydrate substrates available in the rumen, A. succinogenes's natural habitat. It also suggests that many different carbon sources can be used as feedstock for succinate production by A. succinogenes.

【 授权许可】

Unknown   
© McKinlay et al; licensee BioMed Central Ltd. 2010. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.