Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for Bioremediation

Halogenated compounds are extensively utilized in different industrial applications such as pesticides and herbicides and cause severe environmental problems because of their toxicity and persistence. Degradation of these compounds by the biological methodis a significant method to red...

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Main Authors: Sefatullah Zakary, Habeebat Adekilekun Oyewusi, Fahrul Huyop
Format: Article
Language:English
Published: University of Brawijaya 2021-02-01
Series:Journal of Tropical Life Science
Subjects:
Online Access:https://jtrolis.ub.ac.id/index.php/jtrolis/article/view/1598/pdf
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author Sefatullah Zakary
Habeebat Adekilekun Oyewusi
Fahrul Huyop
author_facet Sefatullah Zakary
Habeebat Adekilekun Oyewusi
Fahrul Huyop
author_sort Sefatullah Zakary
collection DOAJ
description Halogenated compounds are extensively utilized in different industrial applications such as pesticides and herbicides and cause severe environmental problems because of their toxicity and persistence. Degradation of these compounds by the biological methodis a significant method to reduce these recalcitrant. Mesorhizobium lotiis im-portant for nitrogen fixation in legume roots.Up to now, there is no report to indicate M.loti can produce dehalogenase enzymes. Thus,a total of twenty-five genomes ofM.lotistrains from the National Center for Biotechnology Information (NCBI) were an-alyzed. These strains notably carrydehalogenase genes and were further investigated. The relative ratio ofhaloalkane and haloacid dehalogenase type II orL-type from all twenty-five genomes was 26% and 74%, respectively, suggesting type II dehalogen-ase is common. Surprisingly, only M.lotistrain TONO carries four dehalogenases and therefore it was further characterized. The chromosome of M.lotistrain TONO con-tains four haloacid dehalogenase type II genes namely, dehLt1(MLTONO_2099),dehLt2(MLTONO_3660), dehLt3(MLTONO_4143), anddehLt4(MLTONO_6945), and their corresponding enzymes were designated as DehLt1, DehLt2, DehLt3, and DehLt4, respectively. The only haloalkane dehalogen-ase gene (MLTONO_4828) was located upstream of thedehLt3gene and its amino acid share 88% identity with DmlA of Mesorhizobium japonicumMAFF 303099. The putative haloacid permease gene designated asdehrPt(MLTONO_0284) was located downstream of thedehLt1and its amino acids show 69% identity with haloacid per-mease ofRhizobiumsp. RC1. The gene encoding helix-turn-helix (HTH) motif family DNA-binding protein regulator and LysR family transcriptional regulator genes were also identified, possibly for regulatory functions. The genomic studies as such, have good potential to be screened for new type of dehalogenases based on basic molecular structure and functions analysis
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spelling doaj.art-d04ebeea772c4a0dad026ff3806da9812023-12-03T08:54:26ZengUniversity of BrawijayaJournal of Tropical Life Science2087-55172021-02-011116777http://dx.doi.org/10.11594/jtls.11.01.09Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for BioremediationSefatullah Zakary0Habeebat Adekilekun Oyewusi1Fahrul Huyop2Department of Biosciences, Faculty of Sciences, Universiti Teknologi Malaysia, JohorBahru81310, MalaysiaDepartment of Botany, Faculty of Biology, Kabul University, Dehburi, Kabul 1006, AfghanistanDepartment of Biochemistry, School of Science and Computer Studies, Federal Polytechnic Ado Ekiti, Ado Ekiti PMB 5351, Ekiti State, NigeriaHalogenated compounds are extensively utilized in different industrial applications such as pesticides and herbicides and cause severe environmental problems because of their toxicity and persistence. Degradation of these compounds by the biological methodis a significant method to reduce these recalcitrant. Mesorhizobium lotiis im-portant for nitrogen fixation in legume roots.Up to now, there is no report to indicate M.loti can produce dehalogenase enzymes. Thus,a total of twenty-five genomes ofM.lotistrains from the National Center for Biotechnology Information (NCBI) were an-alyzed. These strains notably carrydehalogenase genes and were further investigated. The relative ratio ofhaloalkane and haloacid dehalogenase type II orL-type from all twenty-five genomes was 26% and 74%, respectively, suggesting type II dehalogen-ase is common. Surprisingly, only M.lotistrain TONO carries four dehalogenases and therefore it was further characterized. The chromosome of M.lotistrain TONO con-tains four haloacid dehalogenase type II genes namely, dehLt1(MLTONO_2099),dehLt2(MLTONO_3660), dehLt3(MLTONO_4143), anddehLt4(MLTONO_6945), and their corresponding enzymes were designated as DehLt1, DehLt2, DehLt3, and DehLt4, respectively. The only haloalkane dehalogen-ase gene (MLTONO_4828) was located upstream of thedehLt3gene and its amino acid share 88% identity with DmlA of Mesorhizobium japonicumMAFF 303099. The putative haloacid permease gene designated asdehrPt(MLTONO_0284) was located downstream of thedehLt1and its amino acids show 69% identity with haloacid per-mease ofRhizobiumsp. RC1. The gene encoding helix-turn-helix (HTH) motif family DNA-binding protein regulator and LysR family transcriptional regulator genes were also identified, possibly for regulatory functions. The genomic studies as such, have good potential to be screened for new type of dehalogenases based on basic molecular structure and functions analysishttps://jtrolis.ub.ac.id/index.php/jtrolis/article/view/1598/pdfgenomic analysishaloacid dehalogenasehaloacid permeasehalogen-ated organic compoundsmesorhizobium loti
spellingShingle Sefatullah Zakary
Habeebat Adekilekun Oyewusi
Fahrul Huyop
Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for Bioremediation
Journal of Tropical Life Science
genomic analysis
haloacid dehalogenase
haloacid permease
halogen-ated organic compounds
mesorhizobium loti
title Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for Bioremediation
title_full Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for Bioremediation
title_fullStr Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for Bioremediation
title_full_unstemmed Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for Bioremediation
title_short Genomic Analysisof Mesorhizobium lotiStrain TONOReveals Dehalogenases for Bioremediation
title_sort genomic analysisof mesorhizobium lotistrain tonoreveals dehalogenases for bioremediation
topic genomic analysis
haloacid dehalogenase
haloacid permease
halogen-ated organic compounds
mesorhizobium loti
url https://jtrolis.ub.ac.id/index.php/jtrolis/article/view/1598/pdf
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AT fahrulhuyop genomicanalysisofmesorhizobiumlotistraintonorevealsdehalogenasesforbioremediation