Genome-scale metabolic modeling of Mucor circinelloides and comparative analysis with other oleaginous species

Gene
Wanwipa VongsangnakAsawin Meechai

Abstract

We present a novel genome-scale metabolic model iWV1213 of Mucor circinelloides, which is an oleaginous fungus for industrial applications. The model contains 1213 genes, 1413 metabolites and 1326 metabolic reactions across different compartments. We demonstrate that iWV1213 is able to accurately predict the growth rates of M. circinelloides on various nutrient sources and culture conditions using Flux Balance Analysis and Phenotypic Phase Plane analysis. Comparative analysis of three oleaginous genome-scale models, including M. circinelloides (iWV1213), Mortierella alpina (iCY1106) and Yarrowia lipolytica (iYL619_PCP) revealed that iWV1213 possesses a higher number of genes involved in carbohydrate, amino acid, and lipid metabolisms that might contribute to its versatility in nutrient utilization. Moreover, the identification of unique and common active reactions among the Zygomycetes oleaginous models using Flux Variability Analysis unveiled a set of gene/enzyme candidates as metabolic engineering targets for cellular improvement. Thus, iWV1213 offers a powerful metabolic engineering tool for multi-level omics analysis, enabling strain optimization as a cell factory platform of lipid-based production.

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Citations

Dec 17, 2017·Applied Microbiology and Biotechnology·Behzad Satari, Keikhosro Karimi
Sep 11, 2019·Biotechnology and Bioengineering·Ievgeniia A TiukovaEduard J Kerkhoven
Jan 9, 2021·Bioresource Technology·E Tomás-PejóC González-Fernández
Aug 7, 2021·Frontiers in Nutrition·Michela Cerone, Terry K Smith

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