Biodegradation, Biotransformation, and Biocatalysis (B3)

Parales, Rebecca E.; Bruce, Neil C.; Schmid, Andreas; Wackett, Lawrence P.

doi:10.1128/aem.68.10.4699-4709.2002

Cited by 102 publications

(43 citation statements)

References 100 publications

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“…There are other specific organisms that are capable of degrading the diesel oil. These include Bacillus subtilis, Bacillus sp., Alcaligenes sp., Flavobacterium sp.,Micrococcus roseus, Corynebacterium sp., Citrobacter freundii, Klebsiella, Arthrobacter, Acromobacter, Alcaligenes, Nocardia and actinomycetes (Amund, 2000;Wackett and Hershberger 2001;Parales et al 2002). Chikere et al (2009) reported that the experimental and edaphic variation existed between the temperate and of tropical environments.…”

Section: Introductionmentioning

confidence: 99%

Characterization of diesel degrading bacterial species from contaminated tropical ecosystem

Nwinyi

Kanu

Tunde

et al. 2014

Braz. arch. biol. technol.

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Section: Introductionmentioning

confidence: 99%

Characterization of diesel degrading bacterial species from contaminated tropical ecosystem

Nwinyi

Kanu

Tunde

et al. 2014

Braz. arch. biol. technol.

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“…sBMO belongs to a family of bacterial multicomponent monooxygenases which includes soluble methane monooxygenases (sMMOs), phenol hydroxylases (PHs) and aromatic/alkene monooxygenases (TMOs) (Leahy et al, 2003;Sluis et al, 2002). Due to their unusually large substrate ranges, these powerful oxidizers are of particular interest for their potential in bioremediation (Enzien et al, 1994;Halsey et al, 2007;Parales et al, 2002;Smith & Dalton, 2004) and their ability to serve as industrial biocatalysts (Burton, 2003;Parales et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Kinetic characterization of the soluble butane monooxygenase from Thauera butanivorans, formerly ‘Pseudomonas butanovora’

et al. 2009

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Soluble butane monooxygenase (sBMO), a three-component di-iron monooxygenase complex expressed by the C 2 -C 9 alkane-utilizing bacterium Thauera butanivorans, was kinetically characterized by measuring substrate specificities for C 1 -C 5 alkanes and product inhibition profiles. sBMO has high sequence homology with soluble methane monooxygenase (sMMO) and shares a similar substrate range, including gaseous and liquid alkanes, aromatics, alkenes and halogenated xenobiotics. Results indicated that butane was the preferred substrate (defined by k cat : K m ratios). Relative rates of oxidation for C 1 -C 5 alkanes differed minimally, implying that substrate specificity is heavily influenced by differences in substrate K m values. The low micromolar K m for linear C 2 -C 5 alkanes and the millimolar K m for methane demonstrate that sBMO is two to three orders of magnitude more specific for physiologically relevant substrates of T. butanivorans. Methanol, the product of methane oxidation and also a substrate itself, was found to have similar K m and k cat values to those of methane. This inability to kinetically discriminate between the C 1 alkane and C 1 alcohol is observed as a steady-state concentration of methanol during the two-step oxidation of methane to formaldehyde by sBMO. Unlike methanol, alcohols with chain length C 2 -C 5 do not compete effectively with their respective alkane substrates. Results from product inhibition experiments suggest that the geometry of the active site is optimized for linear molecules four to five carbons in length and is influenced by the regulatory protein component B (butane monooxygenase regulatory component; BMOB). The data suggest that alkane oxidation by sBMO is highly specialized for the turnover of C 3 -C 5 alkanes and the release of their respective alcohol products. Additionally, sBMO is particularly efficient at preventing methane oxidation during growth on linear alkanes ¢C 2, despite its high sequence homology with sMMO. These results represent, to the best of our knowledge, the first kinetic in vitro characterization of the closest known homologue of sMMO.

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“…Due to high xenobiotic load of chemicals into the environment, i.e., habitat of microbes, some microorganisms and microbial communities have developed the ability to process them. They process xenobiotics that do not form part of their central metabolism and transform them into compounds that can enter into their central metabolism, e.g., degrading dye and dye derivatives of textile processing effluent into simpler forms (Parales et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the impact of textile effluents on microbial diversity in Tirupur district, Tamil Nadu

et al. 2016

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The expedited advent of urbanization and industrialization for economic growth has adversely affected the biological diversity, which is one of the major concerns of the developing countries. Microbes play a crucial role in decontaminating polluted sites and degrades pollution load of textile effluent. The present study was based on identification of microbial diversity along the Noyaal river of Tirupur area. River water samples from industrial and non-industrial sites and effluent samples of before and after treatment were tested and it was found that microbial diversity was higher in the river water at the industrial site (Kasipalayam) as compared to the non-industrial site (Perur). Similarly, the microbial populations were found to be high in the untreated effluent as compared to the treated one by conventional treatment systems. Similar trends were observed for MBR treatment systems as well. Pseudomonas sp., Achromobacter sp. (bacterial species) and Aspergillus fumigates (fungal species), found exclusively at the industrial site have been reported to possess decolorization potential of dye effluent, thus can be used for treatment of dye effluent. The comparison of different microbial communities from different dye wastewater sources and textile effluents was done, which showed that the microbes degrade dyestuffs, reduce toxicity of wastewaters, etc. From the study, it can be concluded that the microbial community helps to check on the pollutants and minimize their affect. Therefore, there is a need to understand the systematic variation in microbial diversity with the accumulation of pollution load through monitoring.

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Biodegradation, Biotransformation, and Biocatalysis (B3)

Cited by 102 publications

References 100 publications

Characterization of diesel degrading bacterial species from contaminated tropical ecosystem

Characterization of diesel degrading bacterial species from contaminated tropical ecosystem

Kinetic characterization of the soluble butane monooxygenase from Thauera butanivorans, formerly ‘Pseudomonas butanovora’

Assessment of the impact of textile effluents on microbial diversity in Tirupur district, Tamil Nadu

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