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Giap VD, Duc HT, Huong PTM, Hanh DT, Nghi DH, Duy VD, Quynh DT. Purification and characterization of lignin peroxidase from white-rot fungi Pleurotus pulmonarius CPG6 and its application in decolorization of synthetic textile dyes. J GEN APPL MICROBIOL 2023; 68:262-269. [PMID: 35781262 DOI: 10.2323/jgam.2022.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
From the biotechnological point of view, enzymes are powerful tools that help sustain a clean environment in several ways. The enzymatic biodegradation of synthetic dyes is a promising goal since it reduces pollution caused by textile dyeing factory wastewater. Lignin peroxidase (EC 1.11.1.14, LiP) has high redox potential; thus, it is great for application in various industrial fields (e.g., paper- waste treatment and textile dyeing wastewater treatment). In the present study, a LiP from an isolated strain Pleurotus pulmonarius CPG6 (PpuLiP) was successfully purified with a specific activity of 6.59 U mg -1. The enzyme was purified by using three-step column chromatography procedures including DEAE, Sephadex G-75, and HiTrapTM Q FF columns with 17.8-fold purity. The enzyme with a molecular weight of 40 kDa exhibited enhanced pH stability in the acidic range. The activity retention was over 75% at a pH of 3.0 for more than 6 hours. Purified PpuLiP was able to oxidize a variety of substrates including veratryl alcohol, 2,4-DCP, n propanol, and guaiacol. The effect of metal ions on PpuLiP activity was analyzed. The study will provide a ground to decolorize dyes from various groups of PpuLiP. Purified PpuLiP could decolorize 35% Acid blue 25 (AB25), 50% Acid red 129 (AB129), 72% Acid blue 62 (NY3), 85% Acid blue 113 (AB113), 55% Remazol Brilliant blue R (RBBR), and 100% Reactive red 120 (RR120) for 12 hours. Most of the dyes were decolorized, but the heat-denatured enzyme used as negative control obviously did not decolorize the tested dyes. These results indicate that the PpuLiP has potential application in enzyme-based decolorization of synthetic dyes. Keywords: Decolorization; lignin peroxidase; Pleurotus pulmonarius; textile dyes.
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Affiliation(s)
- Vu Dinh Giap
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST).,HaUI Institute of Technology, Hanoi University of Industry (HaUI)
| | - Hoang Thanh Duc
- HaUI Institute of Technology, Hanoi University of Industry (HaUI)
| | | | - Do Thi Hanh
- Department of Chemical Technology, Hanoi University of Industry (HaUI)
| | - Do Huu Nghi
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST).,Institute of Natural Products Chemistry, VAST
| | | | - Dang Thu Quynh
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST).,Institute of Natural Products Chemistry, VAST
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2
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Maijala P, Harrington TC, Raudaskoski M. A peroxidase gene family and gene trees inHeterobasidionand related genera. Mycologia 2017. [DOI: 10.1080/15572536.2004.11833106] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Pekka Maijala
- Department of Applied Chemistry and Microbiology, P.O. Box 56, 00014 University of Helsinki, Finland
| | - Thomas C. Harrington
- Department of Plant Pathology, 351 Bessey Hall, Iowa State University, Ames, Iowa 50011, USA
| | - Marjatta Raudaskoski
- Department of Biosciences, Division of Plant Physiology, P.O. Box 56, 00014 University of Helsinki, Finland
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3
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Aro N, Pakula T, Penttilä M. Transcriptional regulation of plant cell wall degradation by filamentous fungi. FEMS Microbiol Rev 2004; 29:719-39. [PMID: 16102600 DOI: 10.1016/j.femsre.2004.11.006] [Citation(s) in RCA: 274] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2004] [Revised: 10/29/2004] [Accepted: 11/01/2004] [Indexed: 11/22/2022] Open
Abstract
Plant cell wall consists mainly of the large biopolymers cellulose, hemicellulose, lignin and pectin. These biopolymers are degraded by many microorganisms, in particular filamentous fungi, with the aid of extracellular enzymes. Filamentous fungi have a key role in degradation of the most abundant biopolymers found in nature, cellulose and hemicelluloses, and therefore are essential for the maintenance of the global carbon cycle. The production of plant cell wall degrading enzymes, cellulases, hemicellulases, ligninases and pectinases, is regulated mainly at the transcriptional level in filamentous fungi. The genes are induced in the presence of the polymers or molecules derived from the polymers and repressed under growth conditions where the production of these enzymes is not necessary, such as on glucose. The expression of the genes encoding the enzymes is regulated by various environmental and cellular factors, some of which are common while others are more unique to either a certain fungus or a class of enzymes. This review summarises our current knowledge on the transcriptional regulation, focusing on the recently characterized transcription factors that regulate genes coding for enzymes involved in the breakdown of plant cell wall biopolymers.
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Affiliation(s)
- Nina Aro
- VTT Biotechnology, Espoo, Finland.
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4
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Senczuk AM, Machwe A, Kapoor M. High constitutive peroxidase activity and constitutive thermotolerance in Neurospora crassa. MYCOSCIENCE 2003. [DOI: 10.1007/s10267-003-0095-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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5
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de la Rubia T, Linares A, Pérez J, Muñoz-Dorado J, Romera J, Martínez J. Characterization of manganese-dependent peroxidase isoenzymes from the ligninolytic fungus Phanerochaete flavido-alba. Res Microbiol 2002; 153:547-54. [PMID: 12437216 DOI: 10.1016/s0923-2508(02)01357-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phanerochaete flavido-alba is able to decolorize and detoxify olive oil wastewater (OMW) in a process in which simple and polymeric phenols are removed. An unusual acidic MnP is accumulated during the degradation course. This microorganism produces two families of MnPs. MnP1 has an apparent molecular weight of 45 kDa and is secreted as a mixture of isoenzymes with pI ranging from 5.6 to 4.75. MnP2, which is produced as an unique isoenzyme, has an apparent molecular weight of 55.6 Mr and an unusual acidic pI lower than 2.8. The higher specific peroxidase activity for purified MnP2 was for Mn2+ oxidation. Hydroquinone and methylhydroquinone oxidation by MnP2 was Mn2+ dependent, in reaction mixtures without exogenous H2O2. Conversely, ABTS oxidation was Mn2+ independent. Two different DNA fragments (mnpA and mnpB), amplified by PCR, using MnP2 N-terminal sequence and oligonucleotides deduced from two conserved sequences of other MnPs, code for MnPs that belong to the P. chrysosporium mnp2 subfamily on the basis of intron position. The structure of mnpA and mnpB seems to be related to known manganese peroxidase genes, but mnpA encodes an Alanine instead of a Serine (Ser168) regarded as invariant within typical MnPs.
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Affiliation(s)
- Teresa de la Rubia
- Departamento de Microbiología, Facultad de Farmacia, Universidad de Granada, Spain
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6
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Johansson T, Nyman PO, Cullen D. Differential regulation of mnp2, a new manganese peroxidase-encoding gene from the ligninolytic fungus Trametes versicolor PRL 572. Appl Environ Microbiol 2002; 68:2077-80. [PMID: 11916737 PMCID: PMC123858 DOI: 10.1128/aem.68.4.2077-2080.2002] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A peroxidase-encoding gene, mnp2, and its corresponding cDNA were characterized from the white-rot basidiomycete Trametes versicolor PRL 572. We used quantitative reverse transcriptase-mediated PCR to identify mnp2 transcripts in nutrient-limited stationary cultures. Although mnp2 lacks upstream metal response elements (MREs), addition of MnSO(4) to cultures increased mnp2 transcript levels 250-fold. In contrast, transcript levels of an MRE-containing gene of T. versicolor, mnp1, increased only eightfold under the same conditions. Thus, the manganese peroxidase genes in T. versicolor are differentially regulated, and upstream MREs are not necessarily involved. Our results support the hypothesis that fungal and plant peroxidases arose through an ancient duplication and folding of two structural domains, since we found the mnp1 and mnp2 polypeptides to have internal homology.
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Affiliation(s)
- Tomas Johansson
- Forest Product Laboratory, USDA Forest Service, Madison, Wisconsin 53705, USA
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7
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Martı́nez AT. Molecular biology and structure-function of lignin-degrading heme peroxidases. Enzyme Microb Technol 2002. [DOI: 10.1016/s0141-0229(01)00521-x] [Citation(s) in RCA: 321] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Camarero S, Ruiz-Dueñas FJ, Sarkar S, Martínez MJ, Martínez AT. The cloning of a new peroxidase found in lignocellulose cultures of Pleurotus eryngii and sequence comparison with other fungal peroxidases. FEMS Microbiol Lett 2000; 191:37-43. [PMID: 11004397 DOI: 10.1111/j.1574-6968.2000.tb09316.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
We report cloning and sequencing of gene ps1 encoding a versatile peroxidase combining catalytic properties of lignin peroxidase (LiP) and manganese peroxidase (MnP) isolated from lignocellulose cultures of the white-rot fungus Pleurotus eryngii. The gene contains 15 putative introns, and the deduced amino acid sequence consists of a 339-residue mature protein with a 31-residue signal peptide. Several putative response elements were identified in the promoter region. Amino acid residues involved in oxidation of Mn(2+) and aromatic substrates by direct electron transfer to heme and long-range electron transfer from superficial residues as predicted by analogy with Phanerochaete chrysosporium MnP and LiP, respectively. A dendrogram is presented illustrating sequence relationships between 29 fungal peroxidases.
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Affiliation(s)
- S Camarero
- Centro de Investigaciones Biológicas, CSIC, Velázquez 144, E-28006, Madrid, Spain
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9
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Shin KS, Lee YJ. A novel extracellular peroxidase of the white-rot basidiomycete Coriolus hirsutus. Mycologia 2000. [DOI: 10.1080/00275514.2000.12061190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Kwang Soo Shin
- Department of Microbiology, College of Sciences, Taejon University, Taejon, 300-716, Republic of Korea
| | - Yeo Jin Lee
- Department of Microbiology, College of Sciences, Taejon University, Taejon, 300-716, Republic of Korea
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Kesarwani M, Azam M, Natarajan K, Mehta A, Datta A. Oxalate decarboxylase from Collybia velutipes. Molecular cloning and its overexpression to confer resistance to fungal infection in transgenic tobacco and tomato. J Biol Chem 2000; 275:7230-8. [PMID: 10702293 DOI: 10.1074/jbc.275.10.7230] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Oxalic acid is present as nutritional stress in many crop plants like Amaranth and Lathyrus. Oxalic acid has also been found to be involved in the attacking mechanism of several phytopathogenic fungi. A full-length cDNA for oxalate decarboxylase, an oxalate-catabolizing enzyme, was isolated by using 5'-rapid amplification of cDNA ends-polymerase chain reaction of a partial cDNA as cloned earlier from our laboratory (Mehta, A., and Datta, A. (1991) J. Biol. Chem. 266, 23548-23553). By screening a genomic library from Collybia velutipes with this cDNA as a probe, a genomic clone has been isolated. Sequence analyses and comparison of the genomic sequence with the cDNA sequence revealed that the cDNA is interrupted with 17 small introns. The cDNA has been successfully expressed in cytosol and vacuole of transgenic tobacco and tomato plants. The transgenic plants show normal phenotype, and the transferred trait is stably inherited to the next generation. The recombinant enzyme is partially glycosylated and shows oxalate decarboxylase activity in vitro as well as in vivo. Transgenic tobacco and tomato plants expressing oxalate decarboxylase show remarkable resistance to phytopathogenic fungus Sclerotinia sclerotiorum that utilizes oxalic acid during infestation. The result presented in the paper represents a novel approach to develop transgenic plants resistant to fungal infection.
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Affiliation(s)
- M Kesarwani
- National Center for Plant Genome Research, Jawaharlal Nehru University Campus and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110 067, India
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11
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Tello M, Corsini G, Larrondo LF, Salas L, Lobos S, Vicuña R. Characterization of three new manganese peroxidase genes from the ligninolytic basidiomycete Ceriporiopsis subvermispora. BIOCHIMICA ET BIOPHYSICA ACTA 2000; 1490:137-44. [PMID: 10786628 DOI: 10.1016/s0167-4781(99)00227-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Three new genes (Cs-mnp2A, Cs-mnp2B and Cs-mnp3) coding for manganese-dependent peroxidase (MnP) have been identified in the white-rot basidiomycete Ceriporiopsis subvermispora. The mature proteins contain 366 (MnP2A and MnP2B) and 364 (MnP3) amino acids, which are preceded by leader sequences of 21 and 24 amino acids, respectively. Cs-mnp2A and Cs-mnp2B appear to be alleles, since the corresponding protein sequences differ in only five residues. The upstream region of Cs-mnp2B contains a TATA box, AP-1 and AP-2 sites, as well as sites for transcription regulation by metals (two), cAMP (two) and xenobiotics (one). Some of these elements are also found in the regulatory region of Cs-MnP3. Transcription of Cs-mnp2A and Cs-mnp2B, but not that of Cs-mnp3, is activated by manganese.
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Affiliation(s)
- M Tello
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago
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12
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Collins PJ, O'Brien MM, Dobson AD. Cloning and characterization of a cDNA encoding a novel extracellular peroxidase from Trametes versicolor. Appl Environ Microbiol 1999; 65:1343-7. [PMID: 10049906 PMCID: PMC91187 DOI: 10.1128/aem.65.3.1343-1347.1999] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The white rot basidiomycete Trametes versicolor secretes a large number of peroxidases which are believed to be involved in the degradation of polymeric lignin. These peroxidases have been classified previously as lignin peroxidases or manganese peroxidases (MnP). We have isolated a novel extracellular peroxidase-encoding cDNA sequence from T. versicolor CU1, the transcript levels of which are repressed by low concentrations of Mn2+ and induced by nitrogen and carbon but not induced in response to a range of stresses which have been reported to induce MnP expression.
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Affiliation(s)
- P J Collins
- Microbiology Department, University College Cork, Cork, Ireland
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13
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Ruiz-Dueñas FJ, Martínez MJ, Martínez AT. Molecular characterization of a novel peroxidase isolated from the ligninolytic fungus Pleurotus eryngii. Mol Microbiol 1999; 31:223-35. [PMID: 9987124 DOI: 10.1046/j.1365-2958.1999.01164.x] [Citation(s) in RCA: 166] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A haem peroxidase different from other microbial, plant and animal peroxidases is described. The enzyme is secreted as two isoforms by dikaryotic Pleurotus eryngii in peptone-containing liquid medium. The corresponding gene, which presents 15 introns and encodes a 361-amino-acid protein with a 30-amino-acid signal peptide, was isolated as two alleles corresponding to the two isoforms. The alleles differ in three amino acid residues and in a seven nucleotide deletion affecting a single metal response element in the promoter. When compared with Phanerochaete chrysosporium peroxidases, the new enzyme appears closer to lignin peroxidase (LiP) than to Mn-dependent peroxidase (MnP) isoenzymes (58-60% and 55% identity respectively). The molecular model built using crystal structures of three fungal peroxidases as templates, also showed high structural affinity with LiP (C alpha-distance 1.2 A). However, this peroxidase includes a Mn2+ binding site formed by three acidic residues (E36, E40 and D175) near the haem internal propionate, which accounts for the ability to oxidize Mn2+. Its capability to oxidize aromatic substrates could involve interactions with aromatic residues at the edge of the haem channel. Another possibility is long-range electron transfer, e.g. from W164, which occupies the same position of LiP W171 recently reported as involved in the catalytic cycle of LiP.
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Affiliation(s)
- F J Ruiz-Dueñas
- Department of Molecular Microbiology, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
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14
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Rajarathnam S, Shashirekha MN, Bano Z. Biodegradative and biosynthetic capacities of mushrooms: present and future strategies. Crit Rev Biotechnol 1998; 18:91-236. [PMID: 9674114 DOI: 10.1080/0738-859891224220] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- S Rajarathnam
- Central Food Technological Research Institute, Mysore, India
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15
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Sarkar S, Martínez AT, Martínez MJ. Biochemical and molecular characterization of a manganese peroxidase isoenzyme from Pleurotus ostreatus. BIOCHIMICA ET BIOPHYSICA ACTA 1997; 1339:23-30. [PMID: 9165096 DOI: 10.1016/s0167-4838(96)00201-4] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this study we purified and investigated the catalytic properties of a manganese peroxidase isoenzyme produced by the fungus Pleurotus ostreatus in liquid medium with peptone as nitrogen source. The isoenzyme was purified to homogeneity by chromatography on Bio-Rad Q-cartridge, Sephacryl S-200 and Mono-Q with activity yield of 59% and a purification factor of 36. The P. ostreatus MnP obtained had the same pI (3.75) and N-terminal sequence as MnP-1 of Pleurotus eryngii produced in the same medium (both exhibiting Mn-independent activities on phenolic and non-phenolic substrates). However, the N-terminal sequence of this P. ostreatus isoenzyme differed from a previous published sequence of MnP from this fungus. The results obtained show the importance of media composition in the production of different isoenzymes within the same fungal species. We have also demonstrated by Southern blots that the different isoenzymes are probably encoded by different genes, and that the MnP genes in both Pleurotus species are similar but different to those of Phanerochaete chrysosporium.
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Affiliation(s)
- S Sarkar
- Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
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Abstract
This review highlights significant recent advances in the molecular genetics of white-rot fungi and identifies areas where information remains sketchy. The development of critical experimental tools such as genetic mapping techniques is described. A major portion of the text focuses on the structure, genomic organization and transcriptional regulation of the genes encoding peroxidases, laccases and glyoxal oxidase. Finally, recent efforts on heterologous expression of lignin-degrading enzymes are discussed.
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Affiliation(s)
- D Cullen
- Institute for Microbial and Biochemical Technology, Forest Products Laboratory, Madison, WI 53705, USA
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17
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Archibald F, Bourbonnais R, Jurasek L, Paice M, Reid I. Kraft pulp bleaching and delignification by Trametes versicolor. J Biotechnol 1997. [DOI: 10.1016/s0168-1656(97)01675-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Johansson T, Nyman PO. A cluster of genes encoding major isozymes of lignin peroxidase and manganese peroxidase from the white-rot fungus Trametes versicolor. Gene 1996; 170:31-8. [PMID: 8621085 DOI: 10.1016/0378-1119(95)00846-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A gene cluster from the white-rot basidiomycete Trametes (Coriolus) versicolor (Tv) PRL 572 containing three structural genes, LPGIII, LPGIV and MPGI, was characterized. The genes are arranged in the same transcriptional direction, within a 10-kb region, and found to encode quantitatively dominant isozymes of lignin peroxidase (LP) and manganese peroxidase (MP). The second gene in sequence, LPGIV, predicts a 346-amino-acid (aa) mature polypeptide (36.9 kDa, pI 4.31) which is identical with the partial aa sequence information available on the LP12 isozyme (43.1 kDa, pI 3.27). The first gene, LPGIII, encodes a 341-aa polypeptide (36.1 kDa, pI 3.93) which has not been identified at the protein level. However, the similarity of LPGIV would suggest that the predicted product is an LP-type enzyme. LPGIII and LPGIV are homologous to the tandemly arranged genes LPGII and LPGI, respectively, recently described by Jönsson and Nyman [Biochim. Biophys. Acta 1218 (1994) 408-412]. The homologous genes, LPGIII/LPGII and LPGIV/LPGI, are 99% and 96% identical in sequence, respectively, and are predicted to encode identical polypeptides, since base substitutions in the predicted exons are all synonymous. The third gene, MPGI, is different in intron-exon organization and predicted to be disrupted by five rather than six introns, as are the LP genes. The deduced polypeptide, 339 aa in size (35.9 kDa, pI 4.07), is identical with the partial aa sequence information available for isozyme MP2 (44.5 kDa, pI 3.09). The MPGI- and LPGIV-encoded polypeptides are 70% identical in sequence which suggests that MP and LP from Tv may be regarded as members of the same family within the plant peroxidase superfamily. Most importantly, this study identifies a gene encoding the MP2 isozyme, and further shows that genes encoding MP and LP can be closely linked on the chromosome and may be coordinately transcribed.
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Affiliation(s)
- T Johansson
- Department of Biochemistry, Lund University, Sweden.
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Asada Y, Watanabe A, Irie T, Nakayama T, Kuwahara M. Structures of genomic and complementary DNAs coding for Pleurotus ostreatus manganese (II) peroxidase. BIOCHIMICA ET BIOPHYSICA ACTA 1995; 1251:205-9. [PMID: 7669812 DOI: 10.1016/0167-4838(95)00102-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
To study the mechanism of regulation and structure/function relationship of the Pleurotus ostreatus manganese (II) peroxidase (MnP), we amplified the full-length genomic and complementary DNAs for the major isozyme of the MnP mainly by the cassette-primer PCR technique and then sequenced them. The cDNA contained an open reading frame of 1083 bp encoding for a polypeptide of 361 amino-acid residues, including the suggested signal peptide of 29 amino-acid residues with a prepro structure. The predicted amino-acid sequence of the protein shared several common characteristics with those of fungal lignin and manganese (II) peroxidases. We could find a suggested metal response element and two heat-shock element-like sequences in the 5'-flanking region of the structural gene. The structural gene contained 15 introns, many of which lie identical to those in lignin peroxidase genes rather than to those in the known MnP genes.
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Affiliation(s)
- Y Asada
- Department of Bioresource Science, Faculty of Agriculture, Kagawa University, Japan
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