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Hye Yun Moon 6 Articles
The transcription factor Cas5 suppresses hyphal morphogenesis during yeast-form growth in Candida albicans
Jong-Myeong Kim , Hye Yun Moon , Dong Wook Lee , Hyun Ah Kang , Jeong-Yoon Kim
J. Microbiol. 2021;59(11):1063-1063.
DOI: https://doi.org/10.1007/s12275-021-0326-2
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The transcription factor Cas5 suppresses hyphal morphogenesis during yeast-form growth in Candida albicans
Jong-Myeong Kim , Hye Yun Moon , Dong Wook Lee , Hyun Ah Kang , Jeong-Yoon Kim
J. Microbiol. 2021;59(10):911-919.   Published online September 7, 2021
DOI: https://doi.org/10.1007/s12275-021-1326-y
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  • 4 Web of Science
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AbstractAbstract PDF
Candida albicans is an opportunistic human pathogen that exists as yeast, hyphal or pseudohyphal forms depending on pH, nutrients, and temperature. The morphological transition from yeast to hyphae, which is required for the complete virulence of C. albicans, is controlled by many transcription factors that activate or repress hypha-specific genes. The C. albicans transcriptional factor Cas5, a key regulator of genes involved in cell wall integrity, affects the susceptibility of C. albicans to fluconazole, an inhibitor of ergosterol synthesis. In this study, we found that deletion of CAS5 in C. albicans decreased the expression levels of a set of ergosterol biosynthesis genes, such as ERG2, ERG3, ERG5, ERG6, ERG11, and ERG24,
result
ing in the accumulation of lanosterol and zymosterol, which are intermediate metabolites in the ergosterol biosynthesis pathway. Interestingly, it was observed that the cas5Δ/Δ mutant could not maintain the yeast form under non-hyphainducing conditions, while the CAS5-overexpressing cells could not form hyphae under hypha-inducing conditions. Consistent with these observations, the cas5Δ/Δ mutant highly expressed hypha-specific genes, ALS3, ECE1, and HWP1, under non-hypha-inducing conditions. In addition, CAS5 transcription was significantly downregulated immediately after hyphal initiation in the wild-type strain. Furthermore, the cas5Δ/Δ mutant reduced the transcription of NRG1, which encodes a major repressor of hyphal morphogenesis, while Cas5 overexpression increased the transcription of NRG1 under hyphainducing conditions. Collectively, this study suggests the potential role of Cas5 as a repressor of hypha-specific genes during yeast-form growth of C. albicans.

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  • Biocontrol effects and mechanisms of two Streptomyces strains against root rot of Codonopsis pilosula caused by Fusarium oxysporum
    Wei Wang, Lulu Zhang, Zhanfeng Cao, Weijing Yang, Xingzheng Wang, Yufen Yang, Ziyi Hu, Shufeng Wei, Ning Yang
    Physiological and Molecular Plant Pathology.2026; 145: 103378.     CrossRef
  • Cas5 Regulates the Exposure of β-Glucan, the Cell Surface Hydrophobicity, and the Expression of Cell Wall Proteins to Remodel the Candida albicans Cell Wall and Participates in the Recruitment of Neutrophils
    Qiyue Zhang, Guanglin Li, Yanmei Wang, Chen Yang, Wenhui Bai, Qingqing Li, Jiye Zhang, Peipei Zhang
    Microorganisms.2025; 13(3): 683.     CrossRef
  • The Role of Sfp1 in Candida albicans Cell Wall Maintenance
    Che-Kang Chang, Min-Chi Yang, Hsueh-Fen Chen, Yi-Ling Liao, Chung-Yu Lan
    Journal of Fungi.2022; 8(11): 1196.     CrossRef
Molecular characterization of the Saccharomycopsis fibuligera ATF genes, encoding alcohol acetyltransferase for volatile acetate ester formation
Hye Yun Moon , Hyeon Jin Kim , Ki Seung Kim , Su Jin Yoo , Dong Wook Lee , Hee Je Shin , Jeong Ah Seo , Hyun Ah Kang
J. Microbiol. 2021;59(6):598-608.   Published online May 29, 2021
DOI: https://doi.org/10.1007/s12275-021-1159-8
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  • 15 Web of Science
  • 15 Crossref
AbstractAbstract PDF
Aroma ester components produced by fermenting yeast cells via alcohol acetyltransferase (AATase)-catalyzed intracellular reactions are responsible for the fruity character of fermented alcoholic beverages, such as beer and wine. Acetate esters are reportedly produced at relatively high concentrations by non-Saccharomyces species. Here, we identified 12 ATF orthologues (SfATFs) encoding putative AATases, in the diploid genome of Saccharomycopsis fibuligera KJJ81, an isolate from wheat-based Nuruk in Korea. The identified SfATF proteins (SfAtfp) display low sequence identities with S. cerevisiae Atf1p (between 13.3 and 27.0%). All SfAtfp identified, except SfAtf(A)4p and SfAtf(B)4p, contained the activation domain (HXXXD) conserved in other Atf proteins. Culture supernatant analysis using headspace gas chromatography mass spectrometry confirmed that the recombinant S. cerevisiae strains expressing SfAtf(A)2p, SfAtf(B)2p, and SfAtf(B)6p produced high levels of isoamyl and phenethyl acetates. The volatile aroma profiles generated by the SfAtf proteins were distinctive from that of S. cerevisiae Atf1p, implying difference in the substrate preference. Cellular localization analysis using GFP fusion revealed the localization of SfAtf proteins proximal to the lipid particles, consistent with the presence of amphipathic helices at their N- and C-termini. This is the first report that systematically characterizes the S. fibuligera ATF genes encoding functional AATases responsible for acetate ester formation using higher alcohols as substrate, demonstrating their biotechnological potential for volatile ester production.

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  • Aroma modulation of wet Spirulina by a microbial consortium: Deciphering the role of community succession and metabolic pathways
    Kerui Su, Feihang Wang, Anqi Zhao, Beixiao Zhang, Zhihao Fan, Qi Wang, Xuejing Duan, Hanyu Dong, A.E. Solovchenko, Ayesha Shahid, Jingliang Xu
    Food Microbiology.2026; 137: 105043.     CrossRef
  • Two Metschnikowia nectar yeast species have similar volatile profiles but elicit differential foraging in bee pollinators
    M. Elizabeth Moore, Lindsey Wilson, Nathan Brandt, Ayako Wada‐Katsumata, Ahmed M. Saveer, Coby Schal, Robert R. Dunn, Rebecca E. Irwin, Caiti Smukowski Heil
    Ecological Entomology.2026;[Epub]     CrossRef
  • Starter cultures for sourdough production: rational selection, mixed-strain starter cultures, and strain monitoring
    Inés Pradal, Stefan Weckx, Luc De Vuyst
    Critical Reviews in Food Science and Nutrition.2026; : 1.     CrossRef
  • Metabolomics-Driven Insights into Rice Wine Fermentation: From Descriptive Profiling to Intelligent Process Control
    Baoyu Peng, Bifeng Chen, Zhaozhao Dai, Jinwen Chen, Lang Hu, Lelei Wen, Changchun Li
    Fermentation.2026; 12(6): 264.     CrossRef
  • Enhancement of fermentation starter (Jiuyao) quality through reinforced inoculation of indigenous non-Saccharomyces species
    Qiang Hu, Xiang Ni, Jingfeng Zha, Jiahao Lin, Yanyun Wang, Nabil Ibrahim Elsheery, Guangfa Xie, Qi Peng
    LWT.2026; 255: 119760.     CrossRef
  • Investigating the role of primary fungi in Huangjiu fermentation: Insights from flavor orientation and synthetic microbiomes
    Qi Peng, Huihui Zhou, Huajun Zheng, Guangfa Xie
    Food Microbiology.2025; 129: 104765.     CrossRef
  • Molecular functional mechanisms of two alcohol acetyltransferases in Lavandula x intermedia (lavandin)
    Dafeng Liu, Yanyan Du, Ablikim Abdiriyim, Lvxia Zhang, Daoqi Song, Huashui Deng, Xiongying Wen, Yanyan Zhang, Bingwang Sun
    Frontiers in Chemistry.2025;[Epub]     CrossRef
  • Brews, fuels, and opioids: Expanding the yeast Ehrlich pathway for chemical and pharmaceutical manufacturing
    Anastasia E.C. Rumpl, Joshua R. Goodhew, Paul F. Kelly, Mika Hirano, Michael E. Pyne
    Biotechnology Advances.2025; 84: 108684.     CrossRef
  • Genome-based exploration of volatile flavor diversity from food yeast species
    Su Jin Yoo, Da Eun Kim, Lintang Ignatius Satyawan, Seong-Il Eyun, Che Ok Jeon, Hyun Ah Kang, Zbigniew Lazar
    FEMS Yeast Research.2025;[Epub]     CrossRef
  • Genome-Wide Identification and Biochemical Characterization of Alcohol Acyltransferases for Aroma Generation in Wickerhamomyces subpelliculosus Isolates from Fermented Food
    Su Jin Yoo, Hyeon Jin Kim, Hye Yun Moon, Min-Seung Jeon, Yong Uk Cho, Che Ok Jeon, Seong-Il Eyun, Hyun Ah Kang
    Journal of Agricultural and Food Chemistry.2024; 72(50): 28194.     CrossRef
  • Characterization and phylogenetic analysis of the complete mitochondrial genome of Saccharomycopsis fibuligera (lindner) Klocker 1907 (saccharomycetales: saccharomycopsidaceae)
    Yue Deng, Guangjiu Chen, Xuedong Bao, Jie He
    Mitochondrial DNA Part B.2024; 9(6): 743.     CrossRef
  • Optimization of High-Density Fermentation Conditions for Saccharomycopsis fibuligera Y1402 through Response Surface Analysis
    Hongyang Yuan, Qi Sun, Lanshuang Wang, Zhilei Fu, Tianze Zhou, Jinghao Ma, Xiaoyan Liu, Guangsen Fan, Chao Teng
    Foods.2024; 13(10): 1546.     CrossRef
  • Genomic and functional features of yeast species in Korean traditional fermented alcoholic beverage and soybean products
    Da Min Jeong, Hyeon Jin Kim, Min-Seung Jeon, Su Jin Yoo, Hye Yun Moon, Eun-joo Jeon, Che Ok Jeon, Seong-il Eyun, Hyun Ah Kang
    FEMS Yeast Research.2023;[Epub]     CrossRef
  • Beer fermentation performance and sugar uptake of Saccharomycopsis fibuligera–A novel option for low-alcohol beer
    Yvonne Methner, Frederico Magalhães, Luis Raihofer, Martin Zarnkow, Fritz Jacob, Mathias Hutzler
    Frontiers in Microbiology.2022;[Epub]     CrossRef
  • Comparative analysis of aroma components and quality of Geotrichum candidum after space mutation breeding
    Junjie Chen, Qianying Li, Jie Wang, Weizhe Chen, Qikai Zheng, Qingping Zhong, Xiang Fang, Zhenlin Liao
    Frontiers in Microbiology.2022;[Epub]     CrossRef
Molecular characterization of Hsf1 as a master regulator of heat shock response in the thermotolerant methylotrophic yeast Ogataea parapolymorpha
Jin Ho Choo , Su-Bin Lee , Hye Yun Moon , Kun Hwa Lee , Su Jin Yoo , Keun Pil Kim , Hyun Ah Kang
J. Microbiol. 2021;59(2):151-163.   Published online February 1, 2021
DOI: https://doi.org/10.1007/s12275-021-0646-2
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  • 6 Web of Science
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AbstractAbstract PDF
Ogataea parapolymorpha (Hansenula polymorpha DL-1) is a thermotolerant methylotrophic yeast with biotechnological applications. Here, O. parapolymorpha genes whose expression is induced in response to heat shock were identified by transcriptome analysis and shown to possess heat shock elements (HSEs) in their promoters. The function of O. parapolymorpha HSF1 encoding a putative heat shock transcription factor 1 (OpHsf1) was characterized in the context of heat stress response. Despite exhibiting low sequence identity (26%) to its Saccharomyces cerevisiae homolog, OpHsf1 harbors conserved domains including a DNA binding domain (DBD), domains involved in trimerization (TRI), transcriptional activation (AR1, AR2), transcriptional repression (CE2), and a C-terminal modulator (CTM) domain. OpHSF1 could complement the temperature sensitive (Ts) phenotype of a S. cerevisiae hsf1 mutant. An O. parapolymorpha strain with an H221R mutation in the DBD domain of OpHsf1 exhibited significantly retarded growth and a Ts phenotype. Intriguingly, the expression of heat-shock-protein‒coding genes harboring HSEs was significantly decreased in the H221R mutant strain, even under non-stress conditions, indicating the importance of the DBD for the basal growth of O. parapolymorpha. Notably, even though the deletion of C-terminal domains (ΔCE2, ΔAR2, ΔCTM) of OpHsf1 destroyed complementation of the growth defect of the S. cerevisiae hsf1 strain, the C-terminal domains were shown to be dispensable in O. parapolymorpha. Overexpression of OpHsf1 in S. cerevisiae increased resistance to transient heat shock, supporting the idea that OpHsf1 could be useful in the development of heatshock‒ resistant yeast host strains.

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Development of recombinant Yarrowia lipolytica producing virus-like particles of a fish nervous necrosis virus
Van-Trinh Luu , Hye Yun Moon , Jee Youn Hwang , Bo-Kyu Kang , Hyun Ah Kang
J. Microbiol. 2017;55(8):655-664.   Published online July 28, 2017
DOI: https://doi.org/10.1007/s12275-017-7218-5
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  • 22 Crossref
AbstractAbstract PDF
Nervous necrosis virus (NNV) causes viral encephalopathy and retinopathy, a devastating disease of many species of cultured marine fish worldwide. In this study, we used the dimorphic non-pathogenic yeast Yarrowia lipolytica as a host to express the capsid protein of red-spotted grouper nervous necrosis virus (RGNNV-CP) and evaluated its potential as a platform for vaccine production. An initial attempt was made to express the codon-optimized synthetic genes encoding intact and N-terminal truncated forms of RGNNV-CP under the strong constitutive TEF1 promoter using autonomously replicating sequence (ARS)-based vectors. The full-length recombinant capsid proteins expressed in Y. lipolytica were detected not only as monomers and but also as trimers, which is a basic unit for formation of NNV virus-like particles (VLPs). Oral immunization of mice with whole recombinant Y. lipolytica harboring the ARSbased plasmids was shown to efficiently induce the formation of IgG against RGNNV-CP. To increase the number of integrated copies of the RGNNV-CP expression cassette, a set of 26S ribosomal DNA-based multiple integrative vectors was constructed in combination with a series of defective Ylura3 with truncated promoters as selection markers, resulting in integrants harboring up to eight copies of the RGNNVCP cassette. Sucrose gradient centrifugation and transmission electron microscopy of this high-copy integrant were carried out to confirm the expression of RGNNV-CPs as VLPs. This is the first report on efficient expression of viral capsid proteins as VLPs in Y. lipolytica, demonstrating high potential for the Y. lipolytica expression system as a platform for recombinant vaccine production based on VLPs.

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    Seo Hyeon Shin, Hye Yun Moon, Hae Eun Park, Gi Jeong Nam, Ju Hye Baek, Che Ok Jeon, Hyunwook Jung, Myeong Seok Cha, Sol Choi, Jeong Jun Han, Chen Yuan Hou, Chang Seo Park, Hyun Ah Kang
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    R Sahaya Glingston, Jyoti Yadav, Jitika Rajpoot, Neha Joshi, Shirisha Nagotu
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    Francisco A. Guardiola, María Ángeles Esteban, Carlos Angulo
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    Eun Jung Thak, Su Jin Yoo, Hye Yun Moon, Hyun Ah Kang
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    Ravinder Kumar, Piyush Kumar
    FEMS Yeast Research.2019;[Epub]     CrossRef
  • Development of conditional cell lysis mutants of Saccharomyces cerevisiae as production hosts by modulating OCH1 and CHS3 expression
    Van-Trinh Luu, Hye Yun Moon, Su Jin Yoo, Jin Ho Choo, Eun Jung Thak, Hyun Ah Kang
    Applied Microbiology and Biotechnology.2019; 103(5): 2277.     CrossRef
  • An effective and rapid method for RNA preparation from non-conventional yeast species
    Dong Wook Lee, Chang Pyo Hong, Hyun Ah Kang
    Analytical Biochemistry.2019; 586: 113408.     CrossRef
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Cell-Surface Expression of Aspergillus saitoi-Derived Functional α-1,2-Mannosidase on Yarrowia lipolytica for Glycan Remodeling
Hye Yun Moon , Trinh Luu Van , Seon Ah Cheon , Jinho Choo , Jeong-Yoon Kim , Hyun Ah Kang
J. Microbiol. 2013;51(4):506-514.   Published online August 30, 2013
DOI: https://doi.org/10.1007/s12275-013-3344-x
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AbstractAbstract PDF
Expression of proteins on the surface of yeast has a wide range of applications, such as development of live vaccines, screening of antibody libraries, and use as whole-cell biocatalysts. The hemiascomycetes yeast Yarrowia lipolytica has been raised as a potential host for heterologous expression of recombinant proteins. In this study, we report the expression of Aspergillus saitoi α-1,2-mannosidase, encoded by the msdS gene, on the cell surface of Y. lipolytica. As the first step to achieve the secretory expression of msdS protein, four different signal sequences-derived from the endogenous Y. lipolytica Lip2 and Xpr2 prepro regions and the heterologous A. niger α-amylase and rice α-amylase signal sequences-were analyzed for their secretion efficiency. It was shown that the YlLip2 prepro sequence was most efficient in directing the secretory expression of msdS in fully N-glycosylated forms. The surface display of msdS was subsequently directed by fusing GPI anchoring motifs derived from Y. lipolytica cell wall proteins, YlCwp1p and YlYwp1p, respectively, to the C-terminus of the Lip2 prepro-msdS protein. The expression of actively functional msdS protein on the cell surface was confirmed by western blot, flow cytometry analysis, along with the α-1,2-mannosidase activity assay using intact Y. lipolytica cells as the enzyme source. Furthermore, the glycoengineered Y. lipolytica Δoch1Δmpo1 strains displaying α-1,2-mannosidase were able to convert Man8GlcNAc2 to Man5GlcNAc2 efficiently on their cell-wall mannoproteins, demonstrating its potential used for glycoengineering in vitro or in vivo.

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  • Characterization of putative glycosylphosphatidylinositol-anchoring motifs for surface display in the methylotrophic yeast Hansenula polymorpha
    Seon Ah Cheon, Jinhee Jung, Jin Ho Choo, Doo-Byoung Oh, Hyun Ah Kang
    Biotechnology Letters.2014; 36(10): 2085.     CrossRef

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