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Wang H, Yao L, Chen J, Ding Z, Ou X, Zhang C, Zhao J, Han Y. Antifungal Peptide P852 Effectively Controls Fusarium oxysporum, a Wilt-Causing Fungus, by Affecting the Glucose Metabolism and Amino Acid Metabolism as well as Damaging Mitochondrial Function. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:19638-19651. [PMID: 38015891 DOI: 10.1021/acs.jafc.3c07953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Fusarium oxysporum causes wilt disease, which causes huge economic losses to a wide range of agricultural cash crops. Antifungal peptide P852 is an effective biocide. However, the mechanism of direct inhibition of pathogenic fungus needs to be explored. The proteomics and transcriptomics results showed that P852 mainly affected intracellular pathways such as glucose metabolism, amino acid metabolism, and oxidoreductase activity in F. oxysporum. P852 disrupts the intracellular oxidative equilibrium in F. oxysporum, and transmission electron microscopy observed mitochondrial swelling, disruption of membrane structure, and leakage of contents. Decreased mitochondrial membrane potential, mitochondrial cytochrome c leakage, and reduced ATP production were also detected. These results suggest that P852 is able to simultaneously inhibit intracellular metabolism and disrupt the mitochondrial function of F. oxysporum, exerting its inhibitory effects in multiple pathways together. The present study provides some insights into the multitargeted mechanism of fungus inhibition of antifungal lipopeptide substances produced by Bacillus spp.
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Affiliation(s)
- Hongji Wang
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
| | - Lan Yao
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
| | - Jie Chen
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
| | - Zeran Ding
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
| | - Xuan Ou
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
| | - Chaowen Zhang
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
| | - Jianjun Zhao
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
| | - Yuzhu Han
- College of Animal Science and Technology, Southwest University, Chongqing 402460, China
- Immunology Research Center, Institute of Medicine, Southwest University, Chongqing 402460, China
- Chongqing Key Laboratory of Herbivore Science, Chongqing 402460, China
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Dilshan MAH, Omeka WKM, Udayantha HMV, Liyanage DS, Rodrigo DCG, Hanchapola HACR, Kodagoda YK, Lee J, Lee S, Jeong T, Kim KM, Han HJ, Wan Q, Lee J. Molecular features, antioxidant potential, and immunological expression assessment of thioredoxin-like protein 1 (TXNL1) in yellowtail clownfish (Amphiprion clarkii). FISH & SHELLFISH IMMUNOLOGY 2023; 141:109009. [PMID: 37598735 DOI: 10.1016/j.fsi.2023.109009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
Thioredoxin-like protein 1 (TXNL1) is a redox-active protein belonging to the thioredoxin family, which mainly controls the redox status of cells. The TXNL1 gene from Amphiprion clarkii (AcTXNL1) was obtained from a pre-established transcriptome database. The AcTXNL1 is encoded with 289 amino acids and is predominantly localized in the cytoplasm and nucleus. The TXN domain of AcTXNL1 comprises a34CGPC37 motif with redox-reactive thiol (SH-) groups. The spatial distribution pattern of AcTXNL1 mRNA was examined in different tissues, and the muscle was identified as the highest expressed tissue. AcTXNL1 mRNA levels in the blood and gills were significantly increased in response to different immunostimulants. In vitro antioxidant capacity of the recombinant AcTXNL1 protein (rACTXNL1) was evaluated using the ABTS free radical-scavenging activity assay, cupric ion reducing antioxidant capacity assay, turbidimetric disulfide reduction assay, and DNA nicking protection assay. The potent antioxidant activity of rAcTXNL1 exhibited a concentration-dependent manner in all assays. Furthermore, in the cellular environment, overexpression of AcTXNL1 increased cell viability under H2O2 stress and reduced nitric oxide (NO) production induced by lipopolysaccharides (LPS). Collectively, the experimental results revealed that AcTXNL1 is an antioxidant and immunologically important gene in A. clarkii.
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Affiliation(s)
- M A H Dilshan
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea
| | - W K M Omeka
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju, 63333, Republic of Korea
| | - H M V Udayantha
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju, 63333, Republic of Korea
| | - D S Liyanage
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju, 63333, Republic of Korea
| | - D C G Rodrigo
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea
| | - H A C R Hanchapola
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea
| | - Y K Kodagoda
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea
| | - Jihun Lee
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea
| | - Sukkyoung Lee
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju, 63333, Republic of Korea
| | - Taehyug Jeong
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju, 63333, Republic of Korea
| | - Kyong Min Kim
- Jeju Fisheries Research Institute, National Institute Fisheries Science, Jeju, 63068, Republic of Korea
| | - Hyun-Ja Han
- Jeju Fisheries Research Institute, National Institute Fisheries Science, Jeju, 63068, Republic of Korea
| | - Qiang Wan
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju, 63333, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Center for Genomic Selection in Korean Aquaculture, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju, 63333, Republic of Korea.
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Cloning, Functional Characterization and Response to Cadmium Stress of the Thioredoxin-like Protein 1 Gene from Phascolosoma esculenta. Int J Mol Sci 2021; 23:ijms23010332. [PMID: 35008758 PMCID: PMC8745482 DOI: 10.3390/ijms23010332] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/16/2021] [Accepted: 12/23/2021] [Indexed: 12/26/2022] Open
Abstract
Cadmium (Cd) is a heavy metal toxicant and is widely distributed in aquatic environments. It can cause excessive production of reactive oxygen species (ROS) in the organism, which in turn leads to a series of oxidative damages. Thioredoxin (Trx), a highly conserved disulfide reductase, plays an important role in maintaining the intracellular redox homeostasis in eukaryotes and prokaryotes. Phascolosoma esculenta is an edible marine worm, an invertebrate that is extensively found on the mudflats of coastal China. To explore the molecular response of Trx in mudflat organisms under Cd stress, we identified a new Trx isoform (Trx-like protein 1 gene) from P. esculenta for the first time, designated as PeTrxl. Molecular and structural characterization, as well as multiple sequence and phylogenetic tree analysis, demonstrated that PeTrxl belongs to the Trx superfamily. PeTrxl transcripts were found to be ubiquitous in all tissues, and the highest expression level occurred in the coelomic fluid. Exposure to three sublethal concentrations of Cd resulted in the upregulation and then downregulation of PeTrxl expression levels over time in coelomic fluid of P. esculenta. The significant elevation of PeTrxl expression after 12 and 24 h of Cd exposure at 6 and 96 mg/L, respectively, might reflect its important role in the resistance to Cd stress. Recombinant PeTrxl (rPeTrxl) showed prominent dose-dependent insulin-reducing and ABTS free radical-scavenging abilities. After exposure to 96 mg/L Cd for 24 h, the ROS level increased significantly in the coelomic fluid, suggesting that Cd induced oxidative stress in P. esculenta. Furthermore, the injection of rPeTrxl during Cd exposure significantly reduced the ROS in the coelomic fluid. Our data suggest that PeTrxl has significant antioxidant capacity and can protect P. esculenta from Cd-induced oxidative stress.
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Proteomic analysis of Sporothrix schenckii cell wall reveals proteins involved in oxidative stress response induced by menadione. Microb Pathog 2020; 141:103987. [PMID: 31962184 DOI: 10.1016/j.micpath.2020.103987] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 10/25/2019] [Accepted: 01/17/2020] [Indexed: 12/19/2022]
Abstract
Sporotrichosis is an emergent subcutaneous mycosis that is a threat to both humans and other animals. Sporotrichosis is acquired by the traumatic implantation of species of the Sporothrix genus. Added to the detoxification systems, pathogenic fungi possess different mechanisms that allow them to survive within the phagocytic cells of their human host during the oxidative burst. These mechanisms greatly depend from the cell wall (CW) since phagocytic cells recognize pathogens through specific receptors associated to the structure. To date, there are no studies addressing the modulation of the expression of S. schenckii CW proteins (CWP) in response to reactive oxygen species (ROS). Therefore, in this work, a proteomic analysis of the CW of S. schenckii in response to the oxidative agent menadione (O2•-) was performed. Proteins that modulate their expression were identified which can be related to the fungal survival mechanisms within the phagocyte. Among the up-regulated CWP in response to the oxidative agent, 13 proteins that could be involved in the mechanisms of oxidative stress response in S. schenckii were identified. The proteins identified were thioredoxin1 (Trx1), superoxide dismutase (Sod), GPI-anchored cell wall protein, β-1,3-endoglucanase EglC, glycoside hydrolase (Gh), chitinase, CFEM domain protein, glycosidase crf1, covalently-linked cell wall protein (Ccw), 30 kDa heat shock protein (Hsp30), lipase, trehalase (Treh), fructose-bisphosphate aldolase (Fba1) and citrate synthase (Cs). The identification of CWP that modulates their expression in response to superoxide ion (O2•-) in S. schenckii is a useful approach to understand how the fungus defends itself against ROS, in order to evade the phagocytic cells from the host and cause the infection.
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EsTrx-2, the mitochondrial thioredoxin from Antarctic microcrustacean (Euphausia superba): Cloning and functional characterization. Comp Biochem Physiol B Biochem Mol Biol 2019; 231:52-58. [DOI: 10.1016/j.cbpb.2019.01.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 01/07/2023]
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Thioredoxin H (TrxH) contributes to adversity adaptation and pathogenicity of Edwardsiella piscicida. Vet Res 2019; 50:26. [PMID: 30992061 PMCID: PMC6466703 DOI: 10.1186/s13567-019-0645-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/26/2019] [Indexed: 12/11/2022] Open
Abstract
Thioredoxins (Trxs) play an important role in defending against oxidative stress and keeping disulfide bonding correct to maintain protein function. Edwardsiella piscicida, a severe fish pathogen, has been shown to encode several thioredoxins including TrxA, TrxC, and TrxH, but their biological roles remain unknown. In this study, we characterized TrxH of E. piscicida (named TrxHEp) and examined its expression and function. TrxHEp is composed of 125 residues and possesses typical thioredoxin H motifs. Expression of trxHEp was upregulated under conditions of oxidative stress, iron starvation, low pH, and during infection of host cells. trxHEp expression was also regulated by ferric uptake regulator (Fur), an important global regulatory of E. piscicida. Compared to the wild type TX01, a markerless trxHEp in-frame mutant strain TX01∆trxH exhibited markedly compromised tolerance of the pathogen to hydrogen peroxide, acid stress, and iron deficiency. Deletion of trxHEp significantly retarded bacterial biofilm growth and decreased resistance against serum killing. Pathogenicity analysis shows that the inactivation of trxHEp significantly impaired the ability of E. piscicida to invade host cells, reproduce in macrophages, and infect host tissues. Introduction of a trans-expressed trxH gene restored the lost virulence of TX01∆trxH. There is likely to be a complex relationship of functional complementation or expression regulation between TrxH and another two thioredoxins, TrxA and TrxC, of E. piscicida. This is the first functional report of TrxH in fish pathogens, and the findings suggest that TrxHEp is essential for coping with adverse circumstances and contributes to host infection of E. piscicida.
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Zhai N, Jia H, Ma M, Chao Y, Guo X, Li H. Characteristics of AccSTIP1 in Apis cerana cerana and its role during oxidative stress responses. Cell Stress Chaperones 2018; 23:1165-1176. [PMID: 30128723 PMCID: PMC6237692 DOI: 10.1007/s12192-018-0920-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 05/21/2018] [Accepted: 05/24/2018] [Indexed: 10/28/2022] Open
Abstract
Various environmental stresses, such as heat shock, heavy metals, ultraviolet (UV) radiation and different pesticides, induce a cellular oxidative stress response. The cellular oxidative stress response is usually regulated by heat shock proteins (Hsps) acting as molecular chaperones. Stress-induced phosphoprotein 1 (STIP1), one of the most widely studied co-chaperones, functions as an adaptor that directs Hsp90 to Hsp70-client protein complexes. However, the biological functions of STIP1 remain poorly understood in honeybee (Apis cerana cerana). In this study, AccSTIP1 was identified in Apis cerana cerana. AccSTIP1 transcription was found to be induced by heat (42 °C), HgCl2, H2O2 and different pesticides (emamectin benzoate, thiamethoxam, hexythiazox and paraquat) and inhibited by CdCl2, UV and kresoxim-methyl. Moreover, western blot analysis indicated that the expression profiles of AccSTIP1 were consistent with its transcriptional expression levels. The disc diffusion assay showed that chemically competent transetta (DE3) bacteria expressing a recombinant AccSTIP1 protein displayed the smaller death zones than did control bacteria after exposure to paraquat and HgCl2. The DNA nicking assay suggested that recombinant purified AccSTIP1 protected supercoiled pUC19 plasmid DNA from damage caused by a thiol-dependent mixed-function oxidation (MFO) system. After knocking down AccSTIP1 gene expression via RNA interference (RNAi), the transcript levels of antioxidation-related genes were obviously lower in dsAccSTIP1 honeybees compared with those in the uninjected honeybees. Collectively, these results demonstrated that AccSTIP1 plays an important role in counteracting oxidative stress. This study lays a foundation for revealing the mechanism of AccSTIP1 in the Apis cerana cerana antioxidant system.
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Affiliation(s)
- Na Zhai
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Haihong Jia
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Manli Ma
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Yuzhen Chao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Han Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China.
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Frantzeskakis L, Kracher B, Kusch S, Yoshikawa-Maekawa M, Bauer S, Pedersen C, Spanu PD, Maekawa T, Schulze-Lefert P, Panstruga R. Signatures of host specialization and a recent transposable element burst in the dynamic one-speed genome of the fungal barley powdery mildew pathogen. BMC Genomics 2018; 19:381. [PMID: 29788921 PMCID: PMC5964911 DOI: 10.1186/s12864-018-4750-6] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/02/2018] [Indexed: 12/30/2022] Open
Abstract
Background Powdery mildews are biotrophic pathogenic fungi infecting a number of economically important plants. The grass powdery mildew, Blumeria graminis, has become a model organism to study host specialization of obligate biotrophic fungal pathogens. We resolved the large-scale genomic architecture of B. graminis forma specialis hordei (Bgh) to explore the potential influence of its genome organization on the co-evolutionary process with its host plant, barley (Hordeum vulgare). Results The near-chromosome level assemblies of the Bgh reference isolate DH14 and one of the most diversified isolates, RACE1, enabled a comparative analysis of these haploid genomes, which are highly enriched with transposable elements (TEs). We found largely retained genome synteny and gene repertoires, yet detected copy number variation (CNV) of secretion signal peptide-containing protein-coding genes (SPs) and locally disrupted synteny blocks. Genes coding for sequence-related SPs are often locally clustered, but neither the SPs nor the TEs reside preferentially in genomic regions with unique features. Extended comparative analysis with different host-specific B. graminis formae speciales revealed the existence of a core suite of SPs, but also isolate-specific SP sets as well as congruence of SP CNV and phylogenetic relationship. We further detected evidence for a recent, lineage-specific expansion of TEs in the Bgh genome. Conclusions The characteristics of the Bgh genome (largely retained synteny, CNV of SP genes, recently proliferated TEs and a lack of significant compartmentalization) are consistent with a “one-speed” genome that differs in its architecture and (co-)evolutionary pattern from the “two-speed” genomes reported for several other filamentous phytopathogens. Electronic supplementary material The online version of this article (10.1186/s12864-018-4750-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lamprinos Frantzeskakis
- Institute for Biology I, Unit of Plant Molecular Cell Biology, RWTH Aachen University, Worringerweg 1, 52056, Aachen, Germany
| | - Barbara Kracher
- Max Planck Institute for Plant Breeding Research, Department of Plant-Microbe Interactions, Carl-von-Linné-Weg 10, 50829, Cologne, Germany
| | - Stefan Kusch
- Institute for Biology I, Unit of Plant Molecular Cell Biology, RWTH Aachen University, Worringerweg 1, 52056, Aachen, Germany
| | - Makoto Yoshikawa-Maekawa
- Max Planck Institute for Plant Breeding Research, Department of Plant-Microbe Interactions, Carl-von-Linné-Weg 10, 50829, Cologne, Germany
| | - Saskia Bauer
- Max Planck Institute for Plant Breeding Research, Department of Plant-Microbe Interactions, Carl-von-Linné-Weg 10, 50829, Cologne, Germany
| | - Carsten Pedersen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Pietro D Spanu
- Imperial College, Department of Life Sciences, Sir Alexander Fleming Building, London, SW7 2AZ, UK
| | - Takaki Maekawa
- Max Planck Institute for Plant Breeding Research, Department of Plant-Microbe Interactions, Carl-von-Linné-Weg 10, 50829, Cologne, Germany.
| | - Paul Schulze-Lefert
- Max Planck Institute for Plant Breeding Research, Department of Plant-Microbe Interactions, Carl-von-Linné-Weg 10, 50829, Cologne, Germany.
| | - Ralph Panstruga
- Institute for Biology I, Unit of Plant Molecular Cell Biology, RWTH Aachen University, Worringerweg 1, 52056, Aachen, Germany.
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Liyanage DS, Omeka WKM, Godahewa GI, Lee J. Molecular characterization of thioredoxin-like protein 1 (TXNL1) from big-belly seahorse Hippocampus abdominalis in response to immune stimulation. FISH & SHELLFISH IMMUNOLOGY 2018; 75:181-189. [PMID: 29427717 DOI: 10.1016/j.fsi.2018.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/29/2018] [Accepted: 02/06/2018] [Indexed: 06/08/2023]
Abstract
Thioredoxin is a highly conserved protein found in both prokaryotes and eukaryotes. Reactive oxygen species (ROS) are produced in response to metabolic processes, radiation, metal oxidation, and pathological infections. High levels of ROS lead to cell death via autophagy. However, thioredoxin acts as an active regulatory enzyme in response to excessive ROS. Here, we performed in-silico analysis, immune challenge experiments, and functional assays of seahorse thioredoxin-like protein 1 (ShTXNL1). Evolutionary identification showed that ShTXNL1 protein belongs to the thioredoxin superfamily comprising 289 amino acids. It possesses an N-terminal active thioredoxin domain and C-terminal proteasome-interacting thioredoxin domain (PITH) of ShTXNL1 which is a component of 26S proteasome and binds to the matrix or cell. Pairwise alignment results showed 99.0% identity and 99.7% similarity with the sequence of Hippocampus species. Conserved thiol-disulfide cysteine residue containing Cys-X-X-Cys motif may be found in the first few amino acids in the second beta sheet starting from the N-terminus. This motif can be discovered in ShTXNL1 as 14CRPC17 and comprised two N-linked glycosylation sites at 72NISA75 and 139NESD142. According to the quantitative real-time polymerase chain reaction analysis from healthy seahorses, highest ShTXNL1 mRNA expression was observed in muscle, followed by ovary, brain, gill, and blood tissues. Moreover, significant temporal expression of ShTXNL1 was observed in gill and blood tissues after bacterial stimuli. Thus, the ShTXNL1 gene may be identified as an immunologically important gene in seahorse.
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Affiliation(s)
- D S Liyanage
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - W K M Omeka
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - G I Godahewa
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea.
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