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Han J, Jiang S, Zhou Z, Lin M, Wang J. Artificial Proteins Designed from G3LEA Contribute to Enhancement of Oxidation Tolerance in E. coli in a Chaperone-like Manner. Antioxidants (Basel) 2023; 12:1147. [PMID: 37371877 DOI: 10.3390/antiox12061147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/12/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
G3LEA is a family of proteins that exhibit chaperone-like activity when under distinct stress. In previous research, DosH was identified as a G3LEA protein from model extremophile-Deinococcus radiodurans R1 with a crucial core HD domain consisting of eight 11-mer motifs. However, the roles of motifs participating in the process of resistance to stress and their underlying mechanisms remain unclear. Here, eight different proteins with tandem repeats of the same motif were synthesized, named Motif1-8, respectively, whose function and structure were discussed. In this way, the role of each motif in the HD domain can be comprehensively analyzed, which can help in finding possibly crucial amino acid sites. Circular dichroism results showed that all proteins were intrinsically ordered in phosphate buffer, and changed into more α-helical ordered structures with the addition of trifluoroethanol and glycerol. Transformants expressing artificial proteins had significantly higher stress resistance to oxidation, desiccation, salinity and freezing compared with the control group; E. coli with Motif1 and Motif8 had more outstanding performance in particular. Moreover, enzymes and membrane protein protection viability suggested that Motif1 and Motif8 had more positive influences on various molecules, demonstrating a protective role in a chaperone-like manner. Based on these results, the artificial proteins synthesized according to the rule of 11-mer motifs have a similar function to wildtype protein. Regarding the sequence in all motifs, there are more amino acids to produce H bonds and α-helices, and more amino acids to promote interaction between proteins in Motif1 and Motif8; in addition, considering linkers, there are possibly more amino acids forming α-helix and binding substrates in these two proteins, which potentially provides some ideas for us to design potential ideal stress-response elements for synthetic biology. Therefore, the amino acid composition of the 11-mer motif and linker is likely responsible for its biological function.
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Affiliation(s)
- Jiahui Han
- Key Laboratory of Agricultural Microbiome (MARA), Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shijie Jiang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Zhengfu Zhou
- Key Laboratory of Agricultural Microbiome (MARA), Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Min Lin
- Key Laboratory of Agricultural Microbiome (MARA), Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jin Wang
- Key Laboratory of Agricultural Microbiome (MARA), Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Loi P, Anzalone DA, Palazzese L, Dinnyés A, Saragusty J, Czernik M. Dry storage of mammalian spermatozoa and cells: state-of-the-art and possible future directions. Reprod Fertil Dev 2021; 33:82-90. [PMID: 38769676 DOI: 10.1071/rd20264] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
This review provides a snapshot of the current state-of-the-art of drying cells and spermatozoa. The major successes and pitfalls of the most relevant literature are described separately for spermatozoa and cells. Overall, the data published so far indicate that we are closer to success in spermatozoa, whereas the situation is far more complex with cells. Critical for success is the presence of xeroprotectants inside the spermatozoa and, even more so, inside cells to protect subcellular compartments, primarily DNA. We highlight workable strategies to endow gametes and cells with the right combination of xeroprotectants, mostly sugars, and late embryogenesis abundant (LEA) or similar 'intrinsically disordered' proteins to help them withstand reversible desiccation. We focus on the biological aspects of water stress, and in particular cellular and DNA damage, but also touch on other still unexplored issues, such as the choice of both dehydration and rehydration methods or approaches, because, in our view, they play a primary role in reducing desiccation damage. We conclude by highlighting the need to exhaustively explore desiccation strategies other than lyophilisation, such as air drying, spin drying or spray drying, ideally with new prototypes, other than the food and pharmaceutical drying strategies currently used, tailored for the unique needs of cells and spermatozoa.
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Affiliation(s)
- P Loi
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, TE 64100, Italy; and Corresponding author
| | - D A Anzalone
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, TE 64100, Italy
| | - L Palazzese
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, TE 64100, Italy
| | - A Dinnyés
- BioTalentum Ltd, Gödöllo, 2100 Gödöllo, Hungary; and HCEMM-USZ, StemCell Research Group, University of Szeged, Szeged, Hungary; and Sichuan University, College of Life Sciences, Chengdu, China
| | - J Saragusty
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, TE 64100, Italy
| | - M Czernik
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, TE 64100, Italy; and Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, Jastrzebiec, Poland
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Kijak H, Ratajczak E. What Do We Know About the Genetic Basis of Seed Desiccation Tolerance and Longevity? Int J Mol Sci 2020; 21:E3612. [PMID: 32443842 PMCID: PMC7279459 DOI: 10.3390/ijms21103612] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 01/02/2023] Open
Abstract
Long-term seed storage is important for protecting both economic interests and biodiversity. The extraordinary properties of seeds allow us to store them in the right conditions for years. However, not all types of seeds are resilient, and some do not tolerate extreme desiccation or low temperature. Seeds can be divided into three categories: (1) orthodox seeds, which tolerate water losses of up to 7% of their water content and can be stored at low temperature; (2) recalcitrant seeds, which require a humidity of 27%; and (3) intermediate seeds, which lose their viability relatively quickly compared to orthodox seeds. In this article, we discuss the genetic bases for desiccation tolerance and longevity in seeds and the differences in gene expression profiles between the mentioned types of seeds.
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Affiliation(s)
- Hanna Kijak
- Institute of Dendrology, Polish Academy of Sciences, 62-035 Kórnik, Poland;
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Nishimoto T, Takahashi Y, Miyama S, Furuta T, Sakurai M. Replica exchange molecular dynamics simulation study on the mechanism of desiccation-induced structuralization of an intrinsically disordered peptide as a model of LEA proteins. Biophys Physicobiol 2019; 16:196-204. [PMID: 31984172 PMCID: PMC6975979 DOI: 10.2142/biophysico.16.0_196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 06/03/2019] [Indexed: 02/04/2023] Open
Abstract
Group 3 late embryogenesis abundant (G3LEA) proteins, which act as a well-characterized desiccation protectant in anhydrobiotic organisms, are structurally disordered in solution, but they acquire a predominantly α-helical structure during drying. Thus, G3LEA proteins are now accepted as intrinsically disordered proteins (IDPs). Their functional regions involve characteristic 11-mer repeating motifs. In the present study, to elucidate the origin of the IDP property of G3LEA proteins, we applied replica exchange molecular dynamics (REMD) simulation to a model peptide composed of two tandem repeats of an 11-mer motif and its counterpart peptide whose amino acid sequence was randomized with the same amino acid composition as that of the 11-mer motif. REMD simulations were performed for a single α-helical chain of each peptide and its double-bundled strand in a wide water content ranging from 5 to 78.3 wt%. In the latter case, we tested different types of arrangement: 1) the dipole moments of the two helices were parallel or anti-parallel and 2) due to the amphiphilic nature of the α-helix of the 11-mer motif, two types of the side-to-side contact were tested: hydrophilic-hydrophilic facing or hydrophobic-hydrophobic facing. Here, we revealed that the single chain alone exhibits no IDP-like properties, even if it involves the 11-mer motif, and the hydrophilic interaction of the two chains leads to the formation of a left-handed α-helical coiled coil in the dry state. These results support the cytoskeleton hypothesis that has been proposed as a mechanism by which G3LEA proteins work as a desiccation protectant.
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Affiliation(s)
- Tatsushi Nishimoto
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Yuta Takahashi
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Shohei Miyama
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Tadaomi Furuta
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Minoru Sakurai
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
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Gu W, Zhang A, Sun H, Gu Y, Chao J, Tian R, Duan JA. Identifying resurrection genes through the differentially expressed genes between Selaginella tamariscina (Beauv.) spring and Selaginella moellendorffii Hieron under drought stress. PLoS One 2019; 14:e0224765. [PMID: 31721818 PMCID: PMC6853609 DOI: 10.1371/journal.pone.0224765] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 10/21/2019] [Indexed: 02/06/2023] Open
Abstract
Selaginella tamariscina (Beauv.) spring, a primitive vascular resurrection plant, can survive extreme drought and recover when water becomes available. To identify drought-inducible genes and to clarify the molecular mechanism of drought tolerance, a comparative transcriptional pattern analysis was conducted between S. tamariscina and Selaginella moellendorffii Hieron (drought sensitive). 133 drought related genes were identified, including 72 functional genes and 61 regulatory genes. And several drought responsive reactions, such as antioxidant activity, osmotic balance, cuticle defense and signal transduction were highlighted in S. tamariscina under drought. Notably, besides peroxidase, catalase and L-ascorbate oxidase genes, DEGs associated with phenylalanine metabolism and polyamine catabolism could be alternative ways to enhance antioxidant ability in S. tamariscina. DEGs related to soluble carbohydrate metabolism, late embryogenesis abundant protein (LEA) and aquaporin protein (AQP) confirmed that osmotic adjustment could resist drought during desiccation. DEGs involved in xyloglucan metabolic process, pectin metabolic process and cutin biosynthesis may also contribute to drought tolerance of S. tamariscina by cuticle defense. Drought-responsive genes encoding protein kinases, calcium sensors, transcription factors (TFs) and plant hormones also help to drought resistance of S. tamariscina. The preliminary validation experiments were performed and the results were consistent with our hypothetical integrated regulatory network. The results of this study provide candidate resurrection genes and an integrated regulatory network for further studies on the molecular mechanisms of stress tolerance in S. tamariscina.
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Affiliation(s)
- Wei Gu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
| | - Aqin Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hongmei Sun
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yuchen Gu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jianguo Chao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Rong Tian
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jin-Ao Duan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
- * E-mail:
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Liu H, Liu H, Yang S, Wang R, Wang T. Improved Expression and Optimization of Trehalose Synthase by Regulation of P glv in Bacillus subtilis. Sci Rep 2019; 9:6585. [PMID: 31036837 PMCID: PMC6488592 DOI: 10.1038/s41598-019-43172-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 04/08/2019] [Indexed: 01/08/2023] Open
Abstract
Trehalose synthase (TreS) converts maltose to trehalose, which has several important functions; therefore, enhancing TreS expression is desirable. Here, a recombinant Bacillus subtilis W800N (ΔamyE)-Pglv strain was constructed to achieve enhanced expression of TreS. Process optimization strategies were developed to improve the expression level of TreS in B. subtilis W800N (ΔamyE)-Pglv. Intracellular activity of TreS was induced using 60 g/L of maltose in shake flask culture. The protein activity reached 5211 ± 134 U/g at 33 °C and pH 7.0 in Luria-Bertani medium. A fed-batch fermentation strategy was applied in a 30 L fermenter containing 18 L terrific broth to achieve high cell density by replacing glycerol with high maltose syrup as a carbon source and an inducer. After 32 h of fermentation, recombinant B. subtilis W800N (ΔamyE)-Pglv activity reached 6850 ± 287 U/g dry cell weight. Our results demonstrate the efficiency of the Pglv promoter in increasing the expression of TreS in B. subtilis W800N (ΔamyE)-Pglv.
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Affiliation(s)
- Hongling Liu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology(Shandong Academy of Sciences), Jinan, Shandong, 250353, China.,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, China.,Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science &Technology), Ministry of Education, Tianjin, 300457, China
| | - Hao Liu
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science &Technology), Ministry of Education, Tianjin, 300457, China
| | - Shaojie Yang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology(Shandong Academy of Sciences), Jinan, Shandong, 250353, China.,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology(Shandong Academy of Sciences), Jinan, Shandong, 250353, China.,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, China
| | - Tengfei Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology(Shandong Academy of Sciences), Jinan, Shandong, 250353, China. .,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, China.
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