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Multi-omics analysis reveals Protein Kinase A-associated regulatory remodeling during adaptation of Trichoderma reesei to lignocellulosic substrate
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Abstract
The filamentous fungus Trichoderma reesei is a major industrial source of holocellulolytic enzymes, and its response to complex carbon sources is regulated by nutrient-sensing mechanisms, including the cyclic adenosine monophosphate (cAMP)–protein kinase A (PKA) signaling pathway. Here, we integrated transcriptomics, quantitative proteomics, and phosphoproteomics to analyze PKAc1-associated responses in the parental strain QM9414 and a Δ pkac1 strain cultivated under glucose or sugarcane bagasse conditions. Deletion of pkac1 was associated with altered growth-related phenotypes and reduced extracellular activities of selected biomass-depolymerizing enzymes. Multi-omics profiling revealed condition-dependent changes affecting subsets of carbohydrate-active enzymes (CAZymes) genes and proteins, nutrient transporters, stress-associated proteins, and regulatory factors. Phosphoproteomics identified phosphorylation-state changes associated with pkac1 deletion, including reduced phosphorylation at sites enriched for the PKA consensus motif. In silico peptide docking was used to prioritize candidate PKAc1-associated substrates for future validation, including a Sec 7-derived peptide with favorable docking behavior relative to the control peptide. Together, these data support a working model in which PKAc1 contributes to regulatory and phosphorylation-state remodeling during adaptation to sugarcane bagasse, with effects on the magnitude and/or timing of selected CAZyme-related outputs in T. reesei .
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Highly accurate protein structure prediction with AlphaFold
Jumper, J., Evans, R., Pritzel, A., Green, T., Figurnov, M., Ronneberger, O., Tunyasuvunakool, K., Bates, R., Žídek, A., Potapenko, A., et al. (2021) · Nature · doi:10.1038/s41586-021-03819-2 · Cited by 43,764 · cited 1×
“A high-confi - dence 3D structural model of T. reesei PKAc1 (catalytic sub-unit) was retrieved from the AlphaFold database (Jumper et al. 2021).”
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Metadata
- Authors
- Zenaide-Neto, H., Pedersoli, W. R., Maués, D. B., Pereira, L. M. S., Taveira, I. C., Simon, T. D. A., Steindorff, A. S., Faça, V. M., de Paula, R. G., & Silva, R. N.
- Affiliations
- Universidade de São Paulo (BR)
- Universidade Federal do Espírito Santo (BR)
- Joint Genome Institute (US)
- Corresponding author
- Silva, Roberto N.
- ORCID
- Venue
- World Journal of Microbiology and Biotechnology
- Published
- 2026-09-08
- Volume
- 42
- Issue
- 9
- ISSN
- 0959-3993 (ISSN-L)
- 1573-0972
- PMC
- PMC13550043
- OpenAlex
- W7211891226
- Cited by
- 0
- References
- 1
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- World Journal of Microbiology and Biotechnology (publishedVersion, cc-by)
- Research Square (acceptedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Universidade De São Paulo
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Enzyme Production and Characterization
- Keywords
- Trichoderma reesei, protein kinase A, cAMP signaling, sugarcane bagasse, carbohydrate-active enzymes, phosphoproteomics, nutrient sensing, protein-peptide docking, nutrient transporters, stress-related proteins
- MeSH terms
- Multiomics, Adaptation, Physiological, Cellulose, Fungal Proteins, Glucose, Hypocreales, Lignin, Phosphorylation, Trichoderma, Signal Transduction, Gene Expression Regulation, Fungal, Cyclic AMP-Dependent Protein Kinases, Gene Expression Profiling, Saccharum, Proteomics
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