Cited by 25Fungal and yeast genetics researchEnzyme Production and CharacterizationBiofuel production and bioconversion

Identifying carbohydrate-active enzymes of Cutaneotrichosporon oleaginosus using systems biology

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Fuchs, Tobias, Melcher, Felix, Rerop, Zora Selina, Lorenzen, Jan, Shaigani, Pariya, Awad, Dania, Haack, Martina, Prem, Sophia Alice +3 more·2021·Microbial Cell Factories

Abstract

BACKGROUND: The oleaginous yeast Cutaneotrichosporon oleaginosus represents one of the most promising microbial platforms for resource-efficient and scalable lipid production, with the capacity to accept a wide range of carbohydrates encapsulated in complex biomass waste or lignocellulosic hydrolysates. Currently, data related to molecular aspects of the metabolic utilisation of oligomeric carbohydrates are sparse. In addition, comprehensive proteomic information for C. oleaginosus focusing on carbohydrate metabolism is not available. RESULTS: In this study, we conducted a systematic analysis of carbohydrate intake and utilisation by C. oleaginosus and investigated the influence of different di- and trisaccharide as carbon sources. Changes in the cellular growth and morphology could be observed, depending on the selected carbon source. The greatest changes in morphology were observed in media containing trehalose. A comprehensive proteomic analysis of secreted, cell wall-associated, and cytoplasmatic proteins was performed, which highlighted differences in the composition and quantity of secreted proteins, when grown on different disaccharides. Based on the proteomic data, we performed a relative quantitative analysis of the identified proteins (using glucose as the reference carbon source) and observed carbohydrate-specific protein distributions. When using cellobiose or lactose as the carbon source, we detected three- and five-fold higher diversity in terms of the respective hydrolases released. Furthermore, the analysis of the secreted enzymes enabled identification of the motif with the consensus sequence LALL[LA]L[LA][LA]AAAAAAA as a potential signal peptide. CONCLUSIONS: Relative quantification of spectral intensities from crude proteomic datasets enabled the identification of new enzymes and provided new insights into protein secretion, as well as the molecular mechanisms of carbo-hydrolases involved in the cleavage of the selected carbon oligomers. These insights can help unlock new substrate sources for C. oleaginosus, such as low-cost by-products containing difficult to utilize carbohydrates. In addition, information regarding the carbo-hydrolytic potential of C. oleaginosus facilitates a more precise engineering approach when using targeted genetic approaches. This information could be used to find new and more cost-effective carbon sources for microbial lipid production by the oleaginous yeast C. oleaginosus.

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  • Cutaneotrichosporon oleaginosus yeast is capable of producing up to 90% (w/w) lipids per biomass in a fermentation process, and can be grown on residue streams.

    “the production of second-generation biodiesel is possible from microbial lipids produced by organisms, such as Cutaneotrichosporon oleaginosus, a yeast capable of producing up to 90% (w/w) lipids per biomass in a fermentation process, which can be grown on residue streams (e.g., wheat bran hydrolysate medium) [46–49].”

    From The potential of biofuels from first to fourth generation (2023) · cites this paper as [46]

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Authors
Fuchs, T., Melcher, F., Rerop, Z. S., Lorenzen, J., Shaigani, P., Awad, D., Haack, M., Prem, S. A., Masri, M., Mehlmer, N., & Brueck, T. B.
Affiliations
Technical University of Munich (DE)
Corresponding author
  • Mehlmer, Norbert
  • Brueck, Thomas B.
Venue
Microbial Cell Factories
Published
2021-10-28
Volume
20
Issue
1
Pages
205-205
ISSN
1475-2859 (ISSN-L)
OpenAlex
W3209450932
Cited by
22
References
93
Citations by year
2026: 3 · 2025: 5 · 2024: 5 · 2023: 8 · 2022: 1
FWCI
1.33
Type
journal article
Language
en
Open access
Locations
  • Microbial Cell Factories (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • mediaTUM (Technical University of Munich) (submittedVersion, other-oa)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion, other-oa)
Funders
  • bundesministerium für bildung und forschung (033RC012B)
  • Technische Universität München
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Enzyme Production and Characterization
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
Keywords
Cutaneotrichosporon oleaginosus, carbohydrate-active enzymes, carbohydrate metabolism, oligosaccharide hydrolysis, trehalose, cellobiose, lactose, secreted proteins, protein secretion, signal peptide, hydrolytic enzymes, proteomics, microbial lipid production, oleaginous yeast, lignocellulosic hydrolysates, biomass waste
MeSH terms
Basidiomycota, Fungal Proteins, Hydrolases, Industrial Microbiology, Proteome, Systems Biology, Carbohydrate Metabolism, Lipid Metabolism

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