Cited by 31Microbial Metabolic Engineering and BioproductionFungal and yeast genetics researchBiofuel production and bioconversion

C‐ and N‐catabolic utilization of tricarboxylic acid cycle‐related amino acids by Scheffersomyces stipitis and other yeasts

Freese, Stefan, Vogts, Tanja, Speer, Falk, Schäfer, Bernd, Passoth, Volkmar, Klinner, Ulrich·2011·Yeast

Abstract

Scheffersomyces stipitis and the closely related yeast Candida shehatae assimilated the L-amino acids glutamate, aspartate and proline as both carbon and nitrogen sole sources. We also found this rarely investigated ability in ascomycetous species such as Candida glabrata, C. reukaufii, C. utilis, Debaryomyces hansenii, Kluyveromyces lactis, K. marxianus, Candida albicans, L. elongisporus, Meyerozyma guilliermondii, C. maltosa, Pichia capsulata and Yarrowia lipolytica and in basidiomycetous species such as Rhodotorula rubra and Trichosporon beigelii. Glutamate was a very efficient carbon source for Sc. stipitis, which enabled a high biomass yield/mole, although the growth rate was lower when compared to growth on glucose medium. The cells secreted waste ammonium during growth on glutamate alone. In Sc. stipitis cultures grown in glucose medium containing glutamate as the nitrogen source the biomass yield was maximal, and ethanol concentration and specific ethanol formation rate were significantly higher than in glucose medium containing ammonium as the nitrogen source. Mainly C-assimilation of glutamate but also N-assimilation in glucose-containing medium correlated with enhanced activity of the NAD-dependent glutamate dehydrogenase 2 (GDH2). A Δgdh2 disruptant was unable to utilize glutamate as either a carbon or a nitrogen source; moreover, this disruptant was also unable to utilize aspartate as a carbon source. The mutation was complemented by retransformation of the GDH2 ORF into the Δgdh2 strain. The results show that Gdh2p plays a dual role in Sc. stipitis as both C- and N-catabolic enzyme, which indicates its role as an interface between the carbon and nitrogen metabolism of this yeast.

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Crossref · 10.1002/yea.1845

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  • C. glabrata can utilize l-amino acids such as glutamate, aspartate and proline as the sole carbon and nitrogen source.

    “Importantly, C. glabrata can utilize l-amino acids such as glutamate, aspartate and proline as the sole carbon and nitrogen source [112].”

    From Candida glabrata: A Lot More Than Meets the Eye (2019) · cites this paper as [112]

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Authors
Freese, S., Vogts, T., Speer, F., Schäfer, B., Passoth, V., & Klinner, U.
Affiliations
  • RWTH Aachen University (DE)
  • Swedish University of Agricultural Sciences (SE)
Corresponding author
Freese, Stefan
Venue
Yeast
Publisher
Wiley
Published
2011-03
Volume
28
Issue
5
Pages
375-390
ISSN
  • 0749-503X (ISSN-L)
  • 1097-0061
OpenAlex
W2067561682
Cited by
31
References
51
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 4 · 2021: 3 · 2020: 2 · 2019: 3 · 2018: 4 · 2017: 1 · 2016: 2 · 2015: 1 · 2014: 1 · 2013: 2 · 2012: 4
FWCI
0.91
Type
journal article
Language
en
Open access
closed
Locations
  • Yeast (publishedVersion)
  • PubMed (publishedVersion)
  • RWTH Publications (RWTH Aachen) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
Keywords
Scheffersomyces stipitis, glutamate catabolism, proline catabolism, GDH2, carbon and nitrogen metabolism, ethanol production, biomass yield, Candida shehatae, Candida glabrata, Candida utilis, Debaryomyces hansenii, Kluyveromyces lactis, Kluyveromyces marxianus, Candida albicans, Rhodotorula mucilaginosa, Trichosporon beigelii, amino acid utilization
MeSH terms
Ethanol, Amino Acids, Aspartic Acid, Citric Acid Cycle, Mitosporic Fungi, DNA, Fungal, Fermentation, Glutamate Dehydrogenase, Industrial Microbiology, Proline, Transformation, Genetic, Polymerase Chain Reaction, Mutagenesis, Insertional, Biomass, Glutamic Acid

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