1
|
Mushroom Ligninolytic Enzymes―Features and Application of Potential Enzymes for Conversion of Lignin into Bio-Based Chemicals and Materials. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11136161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mushroom ligninolytic enzymes are attractive biocatalysts that can degrade lignin through oxido-reduction. Laccase, lignin peroxidase, manganese peroxidase, and versatile peroxidase are the main enzymes that depolymerize highly complex lignin structures containing aromatic or aliphatic moieties and oxidize the subunits of monolignol associated with oxidizing agents. Among these enzymes, mushroom laccases are secreted glycoproteins, belonging to a polyphenol oxidase family, which have a powerful oxidizing capability that catalyzes the modification of lignin using synthetic or natural mediators by radical mechanisms via lignin bond cleavage. The high redox potential laccase within mediators can catalyze the oxidation of a wide range of substrates and the polymerization of lignin derivatives for value-added chemicals and materials. The chemoenzymatic process using mushroom laccases has been applied effectively for lignin utilization and the degradation of recalcitrant chemicals as an eco-friendly technology. Laccase-mediated grafting has also been employed to modify lignin and other polymers to obtain novel functional groups able to conjugate small and macro-biomolecules. In this review, the biochemical features of mushroom ligninolytic enzymes and their potential applications in catalytic reactions involving lignin and its derivatives to obtain value-added chemicals and novel materials in lignin valorization are discussed.
Collapse
|
2
|
Sato T, Suzuki Y, Naito M, Minami A, Suzuki N, Yaegashi K, Hirano T. Overexpression of the laccase gene, lcc1, in Lentinula edodes using the pChG vector. MYCOSCIENCE 2019. [DOI: 10.1016/j.myc.2019.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
3
|
Sakamoto Y, Nakade K, Sato S, Yoshimi A, Sasaki K, Konno N, Abe K. Cell wall structure of secreted laccase-silenced strain in Lentinula edodes. Fungal Biol 2018; 122:1192-1200. [DOI: 10.1016/j.funbio.2018.09.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/17/2018] [Accepted: 09/25/2018] [Indexed: 12/31/2022]
|
4
|
Xu Z, Qin L, Cai M, Hua W, Jin M. Biodegradation of kraft lignin by newly isolated Klebsiella pneumoniae, Pseudomonas putida, and Ochrobactrum tritici strains. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:14171-14181. [PMID: 29524172 DOI: 10.1007/s11356-018-1633-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 02/28/2018] [Indexed: 05/21/2023]
Abstract
Bacterial systems have drawn an increasing amount of attention on lignin valorization due to their rapid growth and powerful environmental adaptability. In this study, Klebsiella pneumoniae NX-1, Pseudomonas putida NX-1, and Ochrobactrum tritici NX-1 with ligninolytic potential were isolated from leaf mold samples. Their ligninolytic capabilities were determined by measuring (1) the cell growth on kraft lignin as the sole carbon source, (2) the decolorization of kraft lignin and lignin-mimicking dyes, (3) the micro-morphology changes and transformations of chemical groups in kraft lignin, and (4) the ligninolytic enzyme activities of these three isolates. To the best of our knowledge, this is the first report that Ochrobactrum tritici species can depolymerize and metabolize lignin. Moreover, laccase, lignin peroxidase, and Mn-peroxidase showed high activities in P. putida NX-1. Due to their excellent ligninolytic capabilities, these three bacteria are important supplements to ligninolytic bacteria library and could be valuable in lignin valorization.
Collapse
Affiliation(s)
- Zhaoxian Xu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Ling Qin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Mufeng Cai
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Wenbo Hua
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Mingjie Jin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| |
Collapse
|
5
|
Häkkinen ST, Reuter L, Nuorti N, Joensuu JJ, Rischer H, Ritala A. Tobacco BY-2 Media Component Optimization for a Cost-Efficient Recombinant Protein Production. FRONTIERS IN PLANT SCIENCE 2018; 9:45. [PMID: 29434617 PMCID: PMC5791008 DOI: 10.3389/fpls.2018.00045] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 01/10/2018] [Indexed: 05/20/2023]
Abstract
Plant cells constitute an attractive platform for production of recombinant proteins as more and more animal-free products and processes are desired. One of the challenges in using plant cells as production hosts has been the costs deriving from expensive culture medium components. In this work, the aim was to optimize the levels of most expensive components in the nutrient medium without compromising the accumulation of biomass and recombinant protein yields. Wild-type BY-2 culture and transgenic tobacco BY-2 expressing green fluorescent protein-Hydrophobin I (GFP-HFBI) fusion protein were used to determine the most inexpensive medium composition. One particularly high-accumulating BY-2 clone, named 'Hulk,' produced 1.1 ± 0.2 g/l GFP-HFBI in suspension and kept its high performance during prolonged subculturing. In addition, both cultures were successfully cryopreserved enabling truly industrial application of this plant cell host. With the optimized culture medium, 43-55% cost reduction with regard to biomass and up to 69% reduction with regard to recombinant protein production was achieved.
Collapse
|
6
|
Sato T, Irie T, Yoshino F. Heterologous expression of the Pleurotus ostreatus MnP3 gene by the laccase gene promoter in Lentinula edodes. Biosci Biotechnol Biochem 2017; 81:1553-1556. [DOI: 10.1080/09168451.2017.1332977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Abstract
Lentinula edodes (shiitake), which have a powerful ligninolytic system, is one of the most important edible mushrooms in Asia. In this study, we introduced the manganese peroxidase (MnP, EC 1.11.1.13) gene from Pleurotus ostreatus driven by L. edodes laccase 1 gene promoter into L. edodes for expression. The resulting transformant expressed the recombinant gene and showed a higher level of MnP activity than that of the wild-type strain.
Collapse
Affiliation(s)
- Toshitsugu Sato
- Iwate Biotechnology Research Center, Kitakami-shi, Japan
- Department of Biotechnology and Environmental Chemistry, National University Corporation Kitami Institute of Technology, Kitami, Japan
| | - Toshikazu Irie
- Iwate Biotechnology Research Center, Kitakami-shi, Japan
- Environmental Science Graduate School, The University of Shiga Prefecture, Hikone, Japan
| | - Fumihiko Yoshino
- Environmental Science Graduate School, The University of Shiga Prefecture, Hikone, Japan
| |
Collapse
|
7
|
Cai Y, Gong Y, Liu W, Hu Y, Chen L, Yan L, Zhou Y, Bian Y. Comparative secretomic analysis of lignocellulose degradation by Lentinula edodes grown on microcrystalline cellulose, lignosulfonate and glucose. J Proteomics 2017; 163:92-101. [PMID: 28483534 DOI: 10.1016/j.jprot.2017.04.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/13/2017] [Accepted: 04/26/2017] [Indexed: 11/18/2022]
Abstract
Lentinula edodes has the potential to degrade woody and nonwoody lignocellulosic biomass. However, the mechanism of lignocellulose degradation by L. edodes is unclear. The aim of this work is to explore the profiling of soluble secreted proteins involved in lignocellulose degradation in L. edodes. For that, we compared the secretomes of L. edodes grown on microcrystalline cellulose, cellulose with lignosulfonate and glucose. Based on nanoliquid chromatography coupled with tandem mass spectrometry of whole-protein hydrolysate, 230 proteins were identified. Label-free proteomic analysis showed that the most abundant carbohydrate-active enzymes involved in polysaccharide hydrolysis were endo-β-1,4-glucanase, α-galactosidase, polygalacturonase and glucoamylase in both cellulosic secretomes. In contrast, enzymes involved in lignin degradation were most abundant in glucose culture, with laccase 1 being the predominant protein (13.13%). When the cellulose and cellulose with lignosulfonate secretomes were compared, the abundance of cellulases and hemicellulases was higher in cellulose with lignosulfonate cultures, which was confirmed by enzyme activity assays. In addition, qRT-PCR analysis demonstrated that the expression levels of genes encoding cellulases and hemicellulases were significantly increased (by 32.2- to 1166.7-fold) when L. edodes was grown in cellulose with lignosulfonate medium. BIOLOGICAL SIGNIFICANCE In this article, the secretomes of L. edodes grown on three different carbon sources were compared. The presented results revealed the profiling of extracellular enzymes involved in lignocellulose degradation, which is helpful to further explore the mechanism of biomass bioconversion by L. edodes.
Collapse
Affiliation(s)
- Yingli Cai
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yuhua Gong
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Wei Liu
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yue Hu
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Lianfu Chen
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Lianlian Yan
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yan Zhou
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yinbing Bian
- Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University,Wuhan, Hubei, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China.
| |
Collapse
|
8
|
Lentinula edodes Genome Survey and Postharvest Transcriptome Analysis. Appl Environ Microbiol 2017; 83:AEM.02990-16. [PMID: 28314725 DOI: 10.1128/aem.02990-16] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/07/2017] [Indexed: 12/22/2022] Open
Abstract
Lentinula edodes is a popular, cultivated edible and medicinal mushroom. Lentinula edodes is susceptible to postharvest problems, such as gill browning, fruiting body softening, and lentinan degradation. We constructed a de novo assembly draft genome sequence and performed gene prediction for Lentinula edodesDe novo assembly was carried out using short reads from paired-end and mate-paired libraries and by using long reads by PacBio, resulting in a contig number of 1,951 and an N50 of 1 Mb. Furthermore, we predicted genes by Augustus using transcriptome sequencing (RNA-seq) data from the whole life cycle of Lentinula edodes, resulting in 12,959 predicted genes. This analysis revealed that Lentinula edodes lacks lignin peroxidase. To reveal genes involved in the loss of quality of Lentinula edodes postharvest fruiting bodies, transcriptome analysis was carried out using serial analysis of gene expression (SuperSAGE). This analysis revealed that many cell wall-related enzymes are upregulated after harvest, such as β-1,3-1,6-glucan-degrading enzymes in glycoside hydrolase (GH) families GH5, GH16, GH30, GH55, and GH128, and thaumatin-like proteins. In addition, we found that several chitin-related genes are upregulated, such as putative chitinases in GH family 18, exochitinases in GH20, and a putative chitosanase in GH family 75. The results suggest that cell wall-degrading enzymes synergistically cooperate for rapid fruiting body autolysis. Many putative transcription factor genes were upregulated postharvest, such as genes containing high-mobility-group (HMG) domains and zinc finger domains. Several cell death-related proteins were also upregulated postharvest.IMPORTANCE Our data collectively suggest that there is a rapid fruiting body autolysis system in Lentinula edodes The genes for the loss of postharvest quality newly found in this research will be targets for the future breeding of strains that keep fresh longer than present strains. De novoLentinula edodes genome assembly data will be used for the construction of a complete Lentinula edodes chromosome map for future breeding.
Collapse
|
9
|
Abstract
Laccases are multi-copper oxidoreductases which catalyze the oxidation of a wide range of substrates during the simultaneous reduction of oxygen to water. These enzymes, originally found in fungi, plants, and other natural sources, have many industrial and biotechnological applications. They are used in the food, textile, pulp, and paper industries, as well as for bioremediation purposes. Although natural hosts can provide relatively high levels of active laccases after production optimization, heterologous expression can bring, moreover, engineered enzymes with desired properties, such as different substrate specificity or improved stability. Hence, diverse hosts suitable for laccase production are reviewed here, while the greatest emphasis is placed on yeasts which are commonly used for industrial production of various proteins. Different approaches to optimize the laccase expression and activity are also discussed in detail here.
Collapse
Affiliation(s)
- Zuzana Antošová
- Department of Membrane Transport, Institute of Physiology, Czech Academy of Sciences (CAS), Vídeňská 1083, 142 20, Prague 4, Czech Republic.
| | - Hana Sychrová
- Department of Membrane Transport, Institute of Physiology, Czech Academy of Sciences (CAS), Vídeňská 1083, 142 20, Prague 4, Czech Republic.
| |
Collapse
|
10
|
Sakamoto Y, Nakade K, Yoshida K, Natsume S, Miyazaki K, Sato S, van Peer AF, Konno N. Grouping of multicopper oxidases in Lentinula edodes by sequence similarities and expression patterns. AMB Express 2015; 5:63. [PMID: 26384343 PMCID: PMC4573974 DOI: 10.1186/s13568-015-0151-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 09/08/2015] [Indexed: 11/30/2022] Open
Abstract
The edible white rot fungus Lentinula edodes possesses a variety of lignin degrading enzymes such as manganese peroxidases and laccases. Laccases belong to the multicopper oxidases, which have a wide range of catalytic activities including polyphenol degradation and synthesis, lignin degradation, and melanin formation. The exact number of laccases in L. edodes is unknown, as are their complete properties and biological functions. We analyzed the draft genome sequence of L. edodes D703PP-9 and identified 13 multicopper oxidase-encoding genes; 11 laccases in sensu stricto, of which three are new, and two ferroxidases. lcc8, a laccase previously reported in L. edodes, was not identified in D703PP-9 genome. Phylogenetic analysis showed that the 13 multicopper oxidases can be classified into laccase sensu stricto subfamily 1, laccase sensu stricto subfamily 2 and ferroxidases. From sequence similarities and expression patterns, laccase sensu stricto subfamily 1 can be divided into two subgroups. Laccase sensu stricto subfamily 1 group A members are mainly secreted from mycelia, while laccase sensu stricto subfamily 1 group B members are expressed mainly in fruiting bodies during growth or after harvesting but are lowly expressed in mycelia. Laccase sensu stricto subfamily 2 members are mainly expressed in mycelia, and two ferroxidases are mainly expressed in the fruiting body during growth or after harvesting, and are expressed at very low levels in mycelium. Our data suggests that L. edodes laccases in same group share expression patterns and would have common biological functions.
Collapse
|
11
|
Zelena K, Eisele N, Berger RG. Escherichia coli as a production host for novel enzymes from basidiomycota. Biotechnol Adv 2014; 32:1382-95. [DOI: 10.1016/j.biotechadv.2014.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/14/2014] [Accepted: 08/25/2014] [Indexed: 01/14/2023]
|
12
|
Kurose T, Saito Y, Kimata K, Nakagawa Y, Yano A, Ito K, Kawarasaki Y. Secretory expression of Lentinula edodes intracellular laccase by yeast high-cell-density system: Sub-milligram production of difficult-to-express secretory protein. J Biosci Bioeng 2014; 117:659-63. [DOI: 10.1016/j.jbiosc.2013.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 11/18/2013] [Accepted: 11/19/2013] [Indexed: 11/29/2022]
|
13
|
Wong KS, Cheung MK, Au CH, Kwan HS. A novel Lentinula edodes laccase and its comparative enzymology suggest guaiacol-based laccase engineering for bioremediation. PLoS One 2013; 8:e66426. [PMID: 23799101 PMCID: PMC3683064 DOI: 10.1371/journal.pone.0066426] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 05/09/2013] [Indexed: 11/18/2022] Open
Abstract
Laccases are versatile biocatalysts for the bioremediation of various xenobiotics, including dyes and polyaromatic hydrocarbons. However, current sources of new enzymes, simple heterologous expression hosts and enzymatic information (such as the appropriateness of common screening substrates on laccase engineering) remain scarce to support efficient engineering of laccase for better "green" applications. To address the issue, this study began with cloning the laccase family of Lentinula edodes. Three laccases perfectio sensu stricto (Lcc4A, Lcc5, and Lcc7) were then expressed from Pichia pastoris, characterized and compared with the previously reported Lcc1A and Lcc1B in terms of kinetics, stability, and degradation of dyes and polyaromatic hydrocarbons. Lcc7 represented a novel laccase, and it exhibited both the highest catalytic efficiency (assayed with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) [ABTS]) and thermostability. However, its performance on "green" applications surprisingly did not match the activity on the common screening substrates, namely, ABTS and 2,6-dimethoxyphenol. On the other hand, correlation analyses revealed that guaiacol is much better associated with the decolorization of multiple structurally different dyes than are the two common screening substrates. Comparison of the oxidation chemistry of guaiacol and phenolic dyes, such as azo dyes, further showed that they both involve generation of phenoxyl radicals in laccase-catalyzed oxidation. In summary, this study concluded a robust expression platform of L. edodes laccases, novel laccases, and an indicative screening substrate, guaiacol, which are all essential fundamentals for appropriately driving the engineering of laccases towards more efficient "green" applications.
Collapse
Affiliation(s)
- Kin-Sing Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Man-Kit Cheung
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Chun-Hang Au
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Hoi-Shan Kwan
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong
| |
Collapse
|
14
|
Bao S, Teng Z, Ding S. Heterologous expression and characterization of a novel laccase isoenzyme with dyes decolorization potential from Coprinus comatus. Mol Biol Rep 2012; 40:1927-36. [PMID: 23076537 DOI: 10.1007/s11033-012-2249-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 10/10/2012] [Indexed: 12/01/2022]
Abstract
Two new laccase genes, named lac1 and lac2, were cloned from the edible basidiomycete Coprinus comatus. Comparison of the deduced amino acid sequences revealed two laccases showed 66.12 % identity and clustered with lac2 and lac3 from Coprinopsis cinerea in same phylogenetic group. Lac1 and lac2 encode proteins of 517 and 523 amino acids preceded by 18 and 21-residue signal peptides, respectively. Lac1 was functionally expressed in Pichia pastoris. The optimum pHs of recombinant Lac1 were 3.0, 6.0, 5.5 and 6.0 and the optimum temperatures were 65, 55, 70 and 50 °C for ABTS, guaiacol, 2,6-dimethylphenol and syringaldazine, respectively. The Km values of Lac1 were 34, 4,317, 7,611 and 14 μM, and the corresponding kcat values were 465.79, 7.67, 1.15 and 0.60 (s(-1) mM), for ABTS, guaiacol, 2,6-dimethylphenol and syringaldazine, respectively. The enzyme activity was completely inhibited by sodium azide (NaN(3)) and 1,4-dithiothreitol (DTT) at the concentration of 5 mM. Laccase activity was also inhibited by several metal ions, especially Fe(2+), while K(+) and NH(4) (+) slightly enhanced laccase activity. Twelve synthetic dyes belonging to anthraquinone, azo and triphenylmethane dyes were decolorized by the recombinant Lac1 at different extents. The recombinant Lac1 decolorized azo dye Reactive Dark Blue KR up to 90 % without any mediator and increasing to 96 % with mediator, indicating its potential in the treatment of industrial effluent containing some recalcitrant synthetic dyes.
Collapse
Affiliation(s)
- Songyuan Bao
- Department of Biological Engineering, Nanjing Forestry University, Nanjing, 210037, Jiangsu, People's Republic of China
| | | | | |
Collapse
|
15
|
Kimata K, Yamaguchi M, Saito Y, Hata H, Miyake K, Yamane T, Nakagawa Y, Yano A, Ito K, Kawarasaki Y. High cell-density expression system: A novel method for extracellular production of difficult-to-express proteins. J Biosci Bioeng 2012; 113:154-9. [DOI: 10.1016/j.jbiosc.2011.10.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 09/04/2011] [Accepted: 10/12/2011] [Indexed: 11/15/2022]
|
16
|
Wong KS, Huang Q, Au CH, Wang J, Kwan HS. Biodegradation of dyes and polyaromatic hydrocarbons by two allelic forms of Lentinula edodes laccase expressed from Pichia pastoris. BIORESOURCE TECHNOLOGY 2012; 104:157-164. [PMID: 22130082 DOI: 10.1016/j.biortech.2011.10.097] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 10/26/2011] [Accepted: 10/28/2011] [Indexed: 05/31/2023]
Abstract
Laccases from basidiomycetes are efficient enzymes in the degradation of xenobiotics. In this study we aimed to provide an industrially relevant expression system for Lentinula edodes laccases, to characterize their enzymatic properties, and to evaluate their potential in bioremediation. Two 1573-bp allelic laccase genes from L. edodes L54 were cloned based on gene models in the genome sequence. A novel upstream consensus (GCTCCGA/CCGGAG) was proposed as an alternative signature sequence for laccases. Both alleles were overexpressed in Pichia pastoris, purified, and verified by zymograms. Kinetic analyses suggested an order of catalytic efficiency of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)>2,6-dimethoxyphenol>guaiacol>l-3,4-dihydroxyphenylalanine>catechol, and a stable range of working temperature below 40 °C. With the appropriate mediators, 1-hydroxybenzotriazole and 2,2,6,6-tetramethylpiperidine-1-oxyl, the recombinant enzymes could catalyze a 70-100% decolorization of selected dyes and a complete degradation of anthracene. These results laid a solid foundation for the use of L. edodes laccases in bioremediations and for improvement with protein engineering.
Collapse
Affiliation(s)
- Kin-Sing Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong.
| | | | | | | | | |
Collapse
|
17
|
Piscitelli A, Pezzella C, Giardina P, Faraco V, Giovanni S. Heterologous laccase production and its role in industrial applications. Bioeng Bugs 2011; 1:252-62. [PMID: 21327057 DOI: 10.4161/bbug.1.4.11438] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 01/25/2010] [Accepted: 01/27/2010] [Indexed: 02/04/2023] Open
Abstract
Laccases are blue multicopper oxidases, catalyzing the oxidation of an array of aromatic substrates concomitantly with the reduction of molecular oxygen to water. These enzymes are implicated in a variety of biological activities. Most of the laccases studied thus far are of fungal origin. The large range of substrates oxidized by laccases has raised interest in using them within different industrial fields, such as pulp delignification, textile dye bleaching, and bioremediation. Laccases secreted from native sources are usually not suitable for large-scale purposes, mainly due to low production yields and high cost of preparation/purification procedures. Heterologous expression may provide higher enzyme yields and may permit to produce laccases with desired properties (such as different substrate specificities, or improved stabilities) for industrial applications. This review surveys researches on heterologous laccase expression focusing on the pivotal role played by recombinant systems towards the development of robust tools for greening modern industry.
Collapse
Affiliation(s)
- Alessandra Piscitelli
- Dipartimento di Chimica Organica e Biochimica, Complesso Universitario Monte S. Angelo, Napoli, Italy.
| | | | | | | | | |
Collapse
|
18
|
Gene silencing of the Lentinula edodes lcc1 gene by expression of a homologous inverted repeat sequence. Microbiol Res 2011; 166:484-93. [DOI: 10.1016/j.micres.2010.09.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2010] [Accepted: 09/25/2010] [Indexed: 11/23/2022]
|
19
|
Saeki N, Takeda H, Tanesaka E, Yoshida M, Takeda H. Induction of manganese peroxidase and laccase by Lentinula edodes under liquid culture conditions and their isozyme detection by enzymatic staining on native-PAGE. MYCOSCIENCE 2011. [DOI: 10.1007/s10267-010-0076-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
20
|
Nakagawa Y, Sakamoto Y, Kikuchi S, Sato T, Yano A. A chimeric laccase with hybrid properties of the parental Lentinula edodes laccases. Microbiol Res 2010; 165:392-401. [PMID: 19853427 DOI: 10.1016/j.micres.2009.08.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 08/20/2009] [Accepted: 08/23/2009] [Indexed: 11/28/2022]
Abstract
We created a chimeric laccase from two different laccases, Lcc1 and Lcc4, from Lentinula edodes. Lcc1 is a secretory lignin-degrading enzyme produced in liquid cultures of L. edodes. Lcc4 is a tissue-accumulating-type enzyme, which is thought to be involved in melanin synthesis in fruiting body after harvesting. Lcc1 and Lcc4 differ in their Km values for some substrates, especially beta-(3,4-dihydroxyphenyl) alanine (L-DOPA) and catechol. The novel chimeric laccase, Lcc4/1, has properties that are a hybrid of those of Lcc1 and Lcc4. Lcc4/1 acts upon both Lcc1 and Lcc4 substrates and most of its Km values are lower than those of Lcc1 and Lcc4. Homology modeling indicates that the deduced shape of the substrate-binding pocket of the chimeric laccase is larger than that of Lcc1 and similar to that of Lcc4. The other biochemical properties, such as temperature and pH dependency, are intermediate between those of Lcc1 and Lcc4.
Collapse
Affiliation(s)
- Yuko Nakagawa
- Iwate Biotechnology Research Center, 22-174-4 Narita, Kitakami-shi, Iwate 024-0003 Japan
| | | | | | | | | |
Collapse
|
21
|
Yano A, Kikuchi S, Nakagawa Y, Sakamoto Y, Sato T. Secretory expression of the non-secretory-type Lentinula edodes laccase by Aspergillus oryzae. Microbiol Res 2009; 164:642-9. [PMID: 19230633 DOI: 10.1016/j.micres.2008.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2008] [Revised: 11/25/2008] [Accepted: 12/01/2008] [Indexed: 11/19/2022]
Abstract
The shiitake mushroom, Lentinula edodes, has an extracelluar secretory-type laccase, Lcc1, and a fruiting-body-accumulation-type laccase, Lcc4. We previously reported the production of Lcc1 by plant cells, but had difficulty producing Lcc4. Here, we report the production of Lcc1 and Lcc4 by Aspergillus oryzae and the extracellular secretory production of Lcc4 using a modified secretion signal peptide (SP) from Lcc1. Sp-Lcc4 produced by A. oryzae had biochemical activities similar to Lcc4 produced by L. edodes. Lcc1 did not react with beta-(3,4-dihydroxyphenol) alanine (DOPA), but Lcc4 from L. edodes and A. oryzae could oxidize DOPA. K(M) values for the substrates 2,2'-azino-di-(3-ethylbenzthiazolinsulfonate), 2,6-dimethoxyphenol, guaiacol, pyrogallol, and catechol were similar for Lcc4 and Sp-Lcc4. In conclusion, a non-secretory-type fungal laccase is secreted into the culture media with its original enzymatic properties by exploiting modified secretory signal peptide.
Collapse
Affiliation(s)
- Akira Yano
- Iwate Biotechnology Research Center, 22-174-4 Narita, Kitakami, Iwate 024-0003, Japan.
| | | | | | | | | |
Collapse
|