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Tanaka M. Transcriptional and post-transcriptional regulation of genes encoding secretory proteins in Aspergillus oryzae. Biosci Biotechnol Biochem 2024; 88:381-388. [PMID: 38211972 DOI: 10.1093/bbb/zbae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/01/2024] [Indexed: 01/13/2024]
Abstract
Aspergillus oryzae, also known as the yellow koji mold, produces various hydrolytic enzymes that are widely used in different industries. Its high capacity to produce secretory proteins makes this filamentous fungus a suitable host for heterologous protein production. Amylolytic gene promoter is widely used to express heterologous genes in A. oryzae. The expression of this promoter is strictly regulated by several transcription factors, whose activation involves various factors. Furthermore, the expression levels of amylolytic and heterologous genes are post-transcriptionally regulated by mRNA degradation mechanisms in response to aberrant transcriptional termination or endoplasmic reticulum stress. This review discusses the transcriptional and post-transcriptional regulatory mechanisms controlling the expression of genes encoding secretory proteins in A. oryzae.
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Affiliation(s)
- Mizuki Tanaka
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
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2
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Ishiwata-Kimata Y, Kimata Y. Fundamental and Applicative Aspects of the Unfolded Protein Response in Yeasts. J Fungi (Basel) 2023; 9:989. [PMID: 37888245 PMCID: PMC10608004 DOI: 10.3390/jof9100989] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/28/2023] Open
Abstract
Upon the dysfunction or functional shortage of the endoplasmic reticulum (ER), namely, ER stress, eukaryotic cells commonly provoke a protective gene expression program called the unfolded protein response (UPR). The molecular mechanism of UPR has been uncovered through frontier genetic studies using Saccharomyces cerevisiae as a model organism. Ire1 is an ER-located transmembrane protein that directly senses ER stress and is activated as an RNase. During ER stress, Ire1 promotes the splicing of HAC1 mRNA, which is then translated into a transcription factor that induces the expression of various genes, including those encoding ER-located molecular chaperones and protein modification enzymes. While this mainstream intracellular UPR signaling pathway was elucidated in the 1990s, new intriguing insights have been gained up to now. For instance, various additional factors allow UPR evocation strictly in response to ER stress. The UPR machineries in other yeasts and fungi, including pathogenic species, are another important research topic. Moreover, industrially beneficial yeast strains carrying an enforced and enlarged ER have been produced through the artificial and constitutive induction of the UPR. In this article, we review canonical and up-to-date insights concerning the yeast UPR, mainly from the viewpoint of the functions and regulation of Ire1 and HAC1.
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Affiliation(s)
| | - Yukio Kimata
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara 630-0192, Japan
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3
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Tanaka M, Zhang S, Sato S, Yokota JI, Sugiyama Y, Kawarasaki Y, Yamagata Y, Gomi K, Shintani T. Physiological ER stress caused by amylase production induces regulated Ire1-dependent mRNA decay in Aspergillus oryzae. Commun Biol 2023; 6:1009. [PMID: 37794162 PMCID: PMC10551036 DOI: 10.1038/s42003-023-05386-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 09/25/2023] [Indexed: 10/06/2023] Open
Abstract
Regulated Ire1-dependent decay (RIDD) is a feedback mechanism in which the endoribonuclease Ire1 cleaves endoplasmic reticulum (ER)-localized mRNAs encoding secretory and membrane proteins in eukaryotic cells under ER stress. RIDD is artificially induced by chemicals that generate ER stress; however, its importance under physiological conditions remains unclear. Here, we demonstrate the occurrence of RIDD in filamentous fungus using Aspergillus oryzae as a model, which secretes copious amounts of amylases. α-Amylase mRNA was rapidly degraded by IreA, an Ire1 ortholog, depending on its ER-associated translation when mycelia were treated with dithiothreitol, an ER-stress inducer. The mRNA encoding maltose permease MalP, a prerequisite for the induction of amylolytic genes, was also identified as an RIDD target. Importantly, RIDD of malP mRNA is triggered by inducing amylase production without any artificial ER stress inducer. Our data provide the evidence that RIDD occurs in eukaryotic microorganisms under physiological ER stress.
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Affiliation(s)
- Mizuki Tanaka
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan.
| | - Silai Zhang
- Department of Agricultural Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Shun Sato
- Department of Agricultural Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Jun-Ichi Yokota
- Department of Agricultural Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Yuko Sugiyama
- Department of Agricultural Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan
| | - Yasuaki Kawarasaki
- Biomolecular Engineering Laboratory, School of Food and Nutritional Science, University of Shizuoka, Shizuoka, 422-8526, Japan
| | - Youhei Yamagata
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Katsuya Gomi
- Department of Agricultural Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan.
- Laboratory of Fermentation Microbiology, Department of Agricultural Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan.
| | - Takahiro Shintani
- Department of Agricultural Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan.
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Tong L, Huang H, Zheng J, Wang X, Bai Y, Wang X, Wang Y, Tu T, Yao B, Qin X, Luo H. Engineering a carbohydrate-binding module to increase the expression level of glucoamylase in Pichia pastoris. Microb Cell Fact 2022; 21:95. [PMID: 35643500 PMCID: PMC9148494 DOI: 10.1186/s12934-022-01833-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/13/2022] [Indexed: 12/04/2022] Open
Abstract
Background Glucoamylase is an important industrial enzyme for the saccharification of starch during sugar production, but the production cost of glucoamylase is a major limiting factor for the growth of the starch-based sugar market. Therefore, seeking strategies for high-level expression of glucoamylase in heterologous hosts are considered as the main way to reduce the enzyme cost. Results ReGa15A from Rasamsonia emersonii and TlGa15B-GA2 from Talaromyces leycettanus have similar properties. However, the secretion level of ReGa15A was significantly higher than TlGa15B-GA2 in Pichia pastoris. To explore the underlying mechanisms affecting the differential expression levels of glucoamylase in P. pastoris, the amino acid sequences and three-dimensional structures of them were compared and analyzed. First, the CBM region was identified by fragment replacement as the key region affecting the expression levels of ReGa15A and TlGa15B-GA2. Then, through the substitution and site-directed mutation of the motifs in the CBM region, three mutants with significantly increased expression levels were obtained. The eight-point mutant TlGA-M4 (S589D/Q599A/G600Y/V603Q/T607I/V608L/N609D/R613Q), the three-point mutant TlGA-M6 (Q599A/G600Y/V603Q) and the five-point mutant TlGA-M7 (S589D/T607I/V608L/N609D/R613Q) have the same specific activity with the wild-type, and the enzyme activity and secretion level have increased by 4–5 times, respectively. At the same time, the expression levels were 5.8-, 2.0- and 2.4-fold higher than that of wild type, respectively. Meanwhile, the expression of genes related to the unfolded protein responses (UPR) in the endoplasmic reticulum (ER) did not differ significantly between the mutants and wild type. In addition, the most highly expressed mutant, TlGA-M7 exhibits rapidly and effectively hydrolyze raw corn starch. Conclusions Our results constitute the first demonstration of improved expression and secretion of a glucoamylase in P. pastoris by introducing mutations within the non-catalytic CBM. This provides a novel and effective strategy for improving the expression of recombinant proteins in heterologous host expression systems. Supplementary Information The online version contains supplementary material available at 10.1186/s12934-022-01833-1.
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Takyu Y, Asamura T, Okamoto A, Maeda H, Takeuchi M, Kusumoto KI, Katase T, Ishida H, Tanaka M, Yamagata Y. A novel milk-clotting enzyme from Aspergillus oryzae and A. luchuensis is an aspartic endopeptidase PepE presumed to be a vacuolar enzyme. Biosci Biotechnol Biochem 2022; 86:413-422. [PMID: 35025981 DOI: 10.1093/bbb/zbac005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/07/2022] [Indexed: 11/14/2022]
Abstract
Aspergillus oryzae RIB40 has 11 aspartic endopeptidase genes. We searched for milk-clotting enzymes based on the homology of the deduced amino acid sequence with chymosins. As a result, we identified a milk-clotting enzyme in A. oryzae. We expected other Aspergillus species to have a homologous enzyme with milk-clotting activity, and we found the most homologous aspartic endopeptidase from A. luchuensis had milk-clotting activity. Surprisingly, 2 enzymes were considered as vacuole enzymes according to a study on A. niger proteases. The 2 enzymes from A. oryzae and A. luchuensis cleaved a peptide between the 105Phe-106Met bond in κ-casein, similar to chymosin. Although both enzymes showed proteolytic activity using casein as a substrate, the optimum pH values for milk-clotting and proteolytic activities were different. Furthermore, the substrate specificities were highly restricted. Therefore, we expected that the Japanese traditional fermentation agent, koji, could be used as an enzyme source for cheese production.
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Affiliation(s)
- Yoko Takyu
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Taro Asamura
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ayako Okamoto
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Hiroshi Maeda
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Michio Takeuchi
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ken-Ich Kusumoto
- Department of Biotechnology, Osaka University, Graduate School of Engineering, Osaka, Japan
| | | | | | - Mizuki Tanaka
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Youhei Yamagata
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
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6
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Daba GM, Mostafa FA, Elkhateeb WA. The ancient koji mold (Aspergillus oryzae) as a modern biotechnological tool. BIORESOUR BIOPROCESS 2021; 8:52. [PMID: 38650252 PMCID: PMC10992763 DOI: 10.1186/s40643-021-00408-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 06/16/2021] [Indexed: 01/07/2023] Open
Abstract
Aspergillus oryzae (A. oryzae) is a filamentous micro-fungus that is used from centuries in fermentation of different foods in many countries all over the world. This valuable fungus is also a rich source of many bioactive secondary metabolites. Moreover, A. oryzae has a prestigious secretory system that allows it to secrete high concentrations of proteins into its culturing medium, which support its use as biotechnological tool in veterinary, food, pharmaceutical, and industrial fields. This review aims to highlight the significance of this valuable fungus in food industry, showing its generosity in production of nutritional and bioactive metabolites that enrich food fermented by it. Also, using A. oryzae as a biotechnological tool in the field of enzymes production was described. Furthermore, domestication, functional genomics, and contributions of A. oryzae in functional production of human pharmaceutical proteins were presented. Finally, future prospects in order to get more benefits from A. oryzae were discussed.
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Affiliation(s)
- Ghoson M Daba
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Researches Division, National Research Centre, El Buhouth Street, Dokki, Giza, 12311, Egypt.
| | - Faten A Mostafa
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Researches Division, National Research Centre, El Buhouth Street, Dokki, Giza, 12311, Egypt.
| | - Waill A Elkhateeb
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Researches Division, National Research Centre, El Buhouth Street, Dokki, Giza, 12311, Egypt
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7
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Jin FJ, Hu S, Wang BT, Jin L. Advances in Genetic Engineering Technology and Its Application in the Industrial Fungus Aspergillus oryzae. Front Microbiol 2021; 12:644404. [PMID: 33708187 PMCID: PMC7940364 DOI: 10.3389/fmicb.2021.644404] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/05/2021] [Indexed: 12/19/2022] Open
Abstract
The filamentous fungus Aspergillus oryzae is an important strain in the traditional fermentation and food processing industries and is often used in the production of soy sauce, soybean paste, and liquor-making. In addition, A. oryzae has a strong capacity to secrete large amounts of hydrolytic enzymes; therefore, it has also been used in the enzyme industry as a cell factory for the production of numerous native and heterologous enzymes. However, the production and secretion of foreign proteins by A. oryzae are often limited by numerous bottlenecks that occur during transcription, translation, protein folding, translocation, degradation, transport, secretion, etc. The existence of these problems makes it difficult to achieve the desired target in the production of foreign proteins by A. oryzae. In recent years, with the decipherment of the whole genome sequence, basic research and genetic engineering technologies related to the production and utilization of A. oryzae have been well developed, such as the improvement of homologous recombination efficiency, application of selectable marker genes, development of large chromosome deletion technology, utilization of hyphal fusion techniques, and application of CRISPR/Cas9 genome editing systems. The development and establishment of these genetic engineering technologies provided a great deal of technical support for the industrial production and application of A. oryzae. This paper reviews the advances in basic research and genetic engineering technologies of the fermentation strain A. oryzae mentioned above to open up more effective ways and research space for the breeding of A. oryzae production strains in the future.
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Affiliation(s)
- Feng-Jie Jin
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Shuang Hu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Bao-Teng Wang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Long Jin
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
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9
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Morita Y, Kikumatsu F, Higuchi Y, Katakura Y, Takegawa K. Characterization and functional analysis of ERAD-related AAA+ ATPase Cdc48 in Aspergillus oryzae. Fungal Biol 2020; 124:801-813. [PMID: 32883430 DOI: 10.1016/j.funbio.2020.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/25/2020] [Accepted: 06/27/2020] [Indexed: 12/21/2022]
Abstract
Aspergillus oryzae can secrete large amounts of enzymes. However, the production of abundant secretory proteins triggers the unfolded protein response (UPR) in the endoplasmic reticulum (ER), and it is not clear how ER-associated protein degradation (ERAD) contributes to bulk protein production in A. oryzae. Here we identified AoCdc48, the sole A. oryzae ortholog of Saccharomyces cerevisiae AAA+ ATPase Cdc48, a component of the ERAD machinery. We found that AoCdc48 localizes in both nuclei and cytoplasm. Generation of an Aocdc48 conditional mutant showed that Aocdc48 repression leads to reduced cell growth and aberrant hyphal morphology. When Aocdc48-repressed cells were cultured on starch-containing plates, the α-amylase-encoding gene amyB was about 1.3-fold higher expressed. Indeed, a halo produced by secreted amylase was seen on potato starch-containing plates even when there was almost no growth under Aocdc48 repression. Fluorescence microscopy revealed that although AmyB seemed to be secreted, various organelle distributions were aberrant in Aocdc48-repressed cells. We found that D1 AAA domain is crucial for cell viability. Finally, we show that Aocdc48-overexpression also causes defects of cell growth, colonial morphology and conidial formation. Collectively, our results suggest that AoCdc48 is essential for growth and organelle distribution but dispensable for amylase secretion.
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Affiliation(s)
- Yuki Morita
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
| | - Futa Kikumatsu
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
| | - Yujiro Higuchi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan.
| | - Yoshinori Katakura
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
| | - Kaoru Takegawa
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan
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Damasio A, Goldman GH, Silva RN, Segato F. Editorial: Advances in the Regulation and Production of Fungal Enzymes by Transcriptomics, Proteomics and Recombinant Strains Design. Front Bioeng Biotechnol 2019; 7:157. [PMID: 31316977 PMCID: PMC6609904 DOI: 10.3389/fbioe.2019.00157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/12/2019] [Indexed: 11/13/2022] Open
Affiliation(s)
- André Damasio
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Gustavo H Goldman
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Roberto N Silva
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Fernando Segato
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, Lorena, Brazil
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11
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An X, Ding C, Zhang H, Liu T, Li J. Overexpression of amyA and glaA substantially increases glucoamylase activity in Aspergillus niger. Acta Biochim Biophys Sin (Shanghai) 2019; 51:638-644. [PMID: 31081016 DOI: 10.1093/abbs/gmz043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Indexed: 11/12/2022] Open
Abstract
The purpose of this study was to obtain an engineered Aspergillus niger strain with high glucoamylase activity by overexpressing the glucoamylase gene glaA and α-amylase gene amyA in A. niger CICC2462. Three recombinant strains containing a single copy of amyA (1A), containing two copies of amyA (2A), and coexpressing amyA and glaA (AG), respectively, were constructed. The transcript levels of amyA in 1A and 2A were increased by 2.95 folds and 3.09 folds, respectively. The levels of amyA and glaA in AG were increased by 1.21 folds and 2.86 folds, but the maximum extracellular glucoamylase activities did not differ significantly. In addition, after 1% casein phosphopeptides (CPPs) was added to the fermentation medium, the maximum extracellular glucoamylase activities for strains 1A, 2A, and AG were 35,200, 37,300, and 40,710 U/ml, respectively, which were significantly higher than that of the parental strain CICC2462 (28,250 U/ml), while CPPs alone had no effect on the parental strain CICC2462. We demonstrate that overexpression of amyA and glaA substantially increases the expression and secretion of glucoamylase in A. niger, and CPPs effectively improves the yield of glucoamylase in recombinant A. niger strains overexpressing amyA and glaA. The newly developed strains and culture methods may have extensive industrial applications.
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Affiliation(s)
- Xin An
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - Chunjie Ding
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - Hui Zhang
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - Tianqi Liu
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - Jie Li
- College of Life Science, Northeast Agricultural University, Harbin, China
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12
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He B, Tu Y, Jiang C, Zhang Z, Li Y, Zeng B. Functional Genomics of Aspergillus oryzae: Strategies and Progress. Microorganisms 2019; 7:E103. [PMID: 30974907 PMCID: PMC6518170 DOI: 10.3390/microorganisms7040103] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/01/2019] [Accepted: 04/06/2019] [Indexed: 11/25/2022] Open
Abstract
Aspergillus oryzae has been used for the production of traditional fermentation and has promising potential to produce primary and secondary metabolites. Due to the tough cell walls and high drug resistance of A. oryzae, functional genomic characterization studies are relatively limited. The exploitation of selection markers and genetic transformation methods are critical for improving A. oryzae fermentative strains. In this review, we describe the genome sequencing of various A. oryzae strains. Recently developed selection markers and transformation strategies are also described in detail, and the advantages and disadvantages of transformation methods are presented. Lastly, we introduce the recent progress on highlighted topics in A. oryzae functional genomics including conidiation, protein secretion and expression, and secondary metabolites, which will be beneficial for improving the application of A. oryzae to industrial production.
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Affiliation(s)
- Bin He
- Jiangxi Key Laboratory of Bioprocess Engineering and Co-Innovation Center for In-vitro Diagnostic Reagents and Devices of Jiangxi Province, College of Life Sciences, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
| | - Yayi Tu
- Jiangxi Key Laboratory of Bioprocess Engineering and Co-Innovation Center for In-vitro Diagnostic Reagents and Devices of Jiangxi Province, College of Life Sciences, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
| | - Chunmiao Jiang
- Jiangxi Key Laboratory of Bioprocess Engineering and Co-Innovation Center for In-vitro Diagnostic Reagents and Devices of Jiangxi Province, College of Life Sciences, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
| | - Zhe Zhang
- Jiangxi Key Laboratory of Bioprocess Engineering and Co-Innovation Center for In-vitro Diagnostic Reagents and Devices of Jiangxi Province, College of Life Sciences, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
| | - Yongkai Li
- Jiangxi Key Laboratory of Bioprocess Engineering and Co-Innovation Center for In-vitro Diagnostic Reagents and Devices of Jiangxi Province, College of Life Sciences, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
| | - Bin Zeng
- Jiangxi Key Laboratory of Bioprocess Engineering and Co-Innovation Center for In-vitro Diagnostic Reagents and Devices of Jiangxi Province, College of Life Sciences, Jiangxi Science & Technology Normal University, Nanchang 330013, China.
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13
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Jiang H, Lin L, Tang W, Chen X, Zheng Q, Huang J, Yang T, Su L, Dong Y, Wang B, Wang Z. Putative Interaction Proteins of the Ubiquitin Ligase Hrd1 in Magnaporthe oryzae. Evol Bioinform Online 2018; 14:1176934318810990. [PMID: 30559593 PMCID: PMC6291861 DOI: 10.1177/1176934318810990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 09/12/2018] [Indexed: 12/22/2022] Open
Abstract
The endoplasmic reticulum (ER) is the entry portal of the conventional secretory pathway where the newly synthesized polypeptides fold, modify, and assemble. The ER responses to the unfolded proteins in its lumen (ER stress) by triggering intracellular signal transduction pathways include the ER-associated degradation (ERAD) pathway and the unfolded protein response (UPR) pathway. In yeast and mammals, the ubiquitin ligase Hrd1 is indispensable for the ERAD pathway, and also Hrd1-mediated ERAD pathway plays a crucial role in maintaining homeostasis and metabolism of human beings. However, the underlying physiological roles and regulatory mechanism of the Hrd1-involved ERAD pathway in the plant pathogenic fungi are still unclear. Here, we identified the Hrd1 orthologous proteins from 9 different fungi and noticed that these Hrd1 orthologs are conserved. Through identification of MoHrd1 putative interacting proteins by co-immunoprecipitation assays and enrichment analysis, we found that MoHrd1 is involved in the secretory pathway, energy synthesis, and metabolism. Taken together, our results suggest that MoHrd1 is conserved among fungi and play an important role in cellular metabolism and infection-related development. Our finding helps uncover the mechanism of Hrd1-involved ERAD pathway in fungi and sheds a new light to understand the pathogenic mechanism of Magnaporthe oryzae.
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Affiliation(s)
- Haolang Jiang
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Lianyu Lin
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Life Sciences, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Wei Tang
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Xuehang Chen
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Qiaojia Zheng
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Jun Huang
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Tao Yang
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Li Su
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | | | - Baohua Wang
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
| | - Zonghua Wang
- Fujian University Key Laboratory for
Plant-Microbe Interaction and College of Plant Protection, Fujian Agriculture and
Forestry University, Fuzhou, China
- Institute of Oceanography, Minjiang
University, Fuzhou, China
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