Characterization of endoplasmic reticulum-associated degradation in the human fungal pathogen Candida albicans

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Microbiology

Main article text

 

Introduction

Materials and Methods

Generation of mutants

Growth analyses

Mass spectrometry and data analysis

Results

Structural analyses of ERAD enzymes

Generation of mutants

C. albicans lacking HRD1, DOA10, or UBC7 exhibit sensitivity to proteotoxic stress

Proteomic analysis of ERAD mutant yeast strains

Discussion

Conclusions

Supplemental Information

CLUSTAL multiple sequence alignment of amino acid sequence of Hrd1 homologs in H. sapiens, S. cerevisiae, and C. albicans.

DOI: 10.7717/peerj.15897/supp-1

CLUSTAL multiple sequence alignment of amino acid sequence of Doa10 homologs in H. sapiens, S. cerevisiae, and C. albicans.

DOI: 10.7717/peerj.15897/supp-2

Summary of proteomic analyses.

DOI: 10.7717/peerj.15897/supp-3

Samples and TMTpro barcodes.

DOI: 10.7717/peerj.15897/supp-4

Sequence identity and similarity of C. albicans, S. cerevisiae, and H. sapiens homologs of ERAD enzymes Hrd1, Doa10, and Ubc7.

Full alignments are available in Supplemental File 1 (Hrd1), Supplemental File 2 (Doa10), and Figure 2D (Ubc7).

DOI: 10.7717/peerj.15897/supp-5

Proteins with significant increases in abundance in multiple C. albicans mutants.

DOI: 10.7717/peerj.15897/supp-6

Proteins with significant decreases in abundance in multiple C. albicans mutants.

DOI: 10.7717/peerj.15897/supp-7

Proteins with significant, opposite-direction changes in abundance in multiple C. albicans mutants.

DOI: 10.7717/peerj.15897/supp-8

Gene Ontology Term analysis for proteins present in increased abundance in C. albicans hrd1/hrd1 mutants.

Genes encoding proteins with altered abundance in hrd1/hrd1 C. albicans mutants were analyzed using the Gene Ontology Term Finder at the Candida Genome Database ( http://www.candidagenome.org/cgi-bin/GO/goTermFinder ). No significant Process, Function, or Component GO Terms were found for proteins present in decreased abundance in hrd1/hrd1 mutants.

DOI: 10.7717/peerj.15897/supp-9

Gene Ontology Term analysis for proteins present in decreased abundance in C. albicans doa10/doa10 mutants.

Genes encoding proteins with altered abundance in doa10/doa10 C. albicans mutants were analyzed using the Gene Ontology Term Finder at the Candida Genome Database ( http://www.candidagenome.org/cgi-bin/GO/goTermFinder ). No significant Process, Function, or Component GO Terms were found for proteins present in increased abundance in doa10/doa10 mutants. No significant Function or Component GO Terms were found for proteins present in decreased abundance in doa10/doa10 mutants.

DOI: 10.7717/peerj.15897/supp-10

Gene Ontology Term analysis for proteins present in increased abundance in C. albicans ubc7/ubc7mutants.

Genes encoding proteins with altered abundance in ubc7/ubc7 C. albicans mutants were analyzed using the Gene Ontology Term Finder at the Candida Genome Database ( http://www.candidagenome.org/cgi-bin/GO/goTermFinder ). No significant Process, Function, or Component GO Terms were found for proteins present in decreased abundance in ubc7/ubc7 mutants.

DOI: 10.7717/peerj.15897/supp-11

Additional Information and Declarations

Competing Interests

Ellen M. Doss is employed by the Mode of Action and Resistance Management Center of Expertise at Corteva Agriscience.

Author Contributions

Ellen M. Doss performed the experiments, analyzed the data, authored or reviewed drafts of the article, and approved the final draft.

Joshua M. Moore performed the experiments, analyzed the data, authored or reviewed drafts of the article, and approved the final draft.

Bryce H. Harman performed the experiments, analyzed the data, authored or reviewed drafts of the article, and approved the final draft.

Emma H. Doud performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft.

Eric M. Rubenstein conceived and designed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft.

Douglas A. Bernstein conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft.

Data Availability

The following information was supplied regarding data availability:

The data are available at MassIVE: MSV000091843, DOI 10.25345/C58P5VK93.

Funding

This work was funded by National Institutes of Health R15 grants GM111713 (Eric M Rubenstein) and AI130950-02 (Douglas A Bernstein), an Indiana Academy of Science Senior Research grant (Douglas A Bernstein), and a Ball State University Graduate Student Aspire Research grant (Ellen M Doss). Acquisition of the IUSM Proteomics Core instrumentation used for this project was provided by the Indiana University Precision Health Initiative. The proteomics work was supported by the Indiana Clinical and Translational Sciences Institute, National Institutes of Health (Award Number UL1TR002529), a National Center for Advancing Translational Sciences, Clinical and Translational Sciences Award, and the Cancer Center Support Grant for the Indiana University Simon Comprehensive Cancer Center (Award Number P30CA082709) from the National Cancer Institute. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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