Modeling of nitrogen fixation and polymer production in the heterotrophic diazotroph Azotobacter vinelandii DJ
Modeling of nitrogen fixation and polymer production in the heterotrophic diazotroph Azotobacter vinelandii DJ
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异养固氮菌 Azotobacter vinelandii DJ 的固氮和聚合物生产模型
DOI:
10.1016/j.mec.2020.e00132
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发表时间:
2020
影响因子:
5.2
通讯作者:
Zengler, Karsten
中科院分区:
文献类型:
--
作者:
Tec-Campos, Diego;Zuñiga, Cristal;Passi, Anurag;Del Toro, John;Tibocha-Bonilla, Juan D.;Zepeda, Alejandro;Betenbaugh, Michael J.;Zengler, Karsten
Nitrogen fixation is an important metabolic process carried out by microorganisms, which converts molecular nitrogen into inorganic nitrogenous compounds such as ammonia (NH3). These nitrogenous compounds are crucial for biogeochemical cycles and for the synthesis of essential biomolecules, i.e. nucleic acids, amino acids and proteins.Azotobacter vinelandiiis a bacterial non-photosynthetic model organism to study aerobic nitrogen fixation (diazotrophy) and hydrogen production. Moreover, the diazotroph can produce biopolymers like alginate and polyhydroxybutyrate (PHB) that have important industrial applications. However, many metabolic processes such as partitioning of carbon and nitrogen metabolism inA. vinelandiiremain unknown to date.Genome-scale metabolic models (M-models) represent reliable tools to unravel and optimize metabolic functions at genome-scale. M-models are mathematical representations that contain information about genes, reactions, metabolites and their associations. M-models can simulate optimal reaction fluxes under a wide variety of conditions using experimentally determined constraints. Here we report on the development of a M-model of the wild type bacteriumA. vinelandiiDJ (iDT1278) which consists of 2,003 metabolites, 2,469 reactions, and 1,278 genes. We validated the model using high-throughput phenotypic and physiological data, testing 180 carbon sources and 95 nitrogen sources.iDT1278 was able to achieve an accuracy of 89% and 91% for growth with carbon sources and nitrogen source, respectively. This comprehensive M-model will help to comprehend metabolic processes associated with nitrogen fixation, ammonium assimilation, and production of organic nitrogen in an environmentally important microorganism.
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DOI:
10.1002/9781119053095.ch22
发表时间:
2015-07
期刊:
Biological nitrogen fixation
影响因子:
--
作者:
J. Setubal;N. F. Almeida
通讯作者:
J. Setubal;N. F. Almeida
DOI:
10.1002/j.1460-2075.1986.tb04225.x
发表时间:
1986-02
期刊:
The EMBO Journal
影响因子:
--
作者:
A. Toukdarian;C. Kennedy
通讯作者:
A. Toukdarian;C. Kennedy
影响因子:
3.4
作者:
Diaz-Barrera, Alvaro;Andler, Rodrigo;Pena, Carlos
通讯作者:
Pena, Carlos
影响因子:
4.6
作者:
Quiroz-Rocha E;Moreno R;Hernández-Ortíz A;Fragoso-Jiménez JC;Muriel-Millán LF;Guzmán J;Espín G;Rojo F;Núñez C
通讯作者:
Núñez C
影响因子:
3.6
作者:
L. Lloret;Rita Barreto;Renato León;S. Moreno;J. Martínez;G. Espín;G. Soberón
通讯作者:
G. Soberón