ArticleMicrobial biotechnology2008
Bacterial decolorization of textile dyes is an extracellular process requiring a multicomponent electron transfer pathway.
Article in Microbial biotechnology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 76 citations in OpenAlex.
- Menaquinone synthesis genes are critical for the decolorization of acid yellow 36 inMicrobiology spectrum · 2026Article
- Azurins With Tunable Reduction Potentials as Redox Mediators for Extracellular Electron Transfer.Chembiochem : a European journal of chemical biology · 2026Article
- Recent progress in treatment of dyes wastewater using microbial-electro-Fenton technology.RSC advances · 2022Review
- Adaptive Responses ofApplied and environmental microbiology · 2019Article
- Function of Biohydrogen Metabolism and Related Microbial Communities in Environmental Bioremediation.Frontiers in microbiology · 2019Review
- Hollow Palladium Nanoparticles Facilitated Biodegradation of an Azo Dye by Electrically Active Biofilms.Materials (Basel, Switzerland) · 2016Article
- 16SrRNA sequencing of Dye decolorizing bacteria isolated from Soil.Bioinformation · 2015Article
- Toxicological significance of azo dye metabolism by human intestinal microbiota.Frontiers in bioscience (Elite edition) · 2012Review
- Physiology and biochemistry of reduction of azo compounds by Shewanella strains relevant to electron transport chain.Applied microbiology and biotechnology · 2010Review
- Metabolism of azo dyes by human skin microbiota.Journal of medical microbiology · 2010Article
- The Escherichia coli azoreductase AzoR Is involved in resistance to thiol-specific stress caused by electrophilic quinones.Journal of bacteriology · 2009Article
- New avenues for Microbial Biotechnology: the beginning of a golden era.Microbial biotechnology · 2008Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Many studies have reported microorganisms as efficient biocatalysts for colour removal of dye-containing industrial wastewaters. We present the first comprehensive study to identify all molecular components involved in decolorization by bacterial cells. Mutants from the model organism Shewanella oneidensis MR-1, generated by random transposon and targeted insertional mutagenesis, were screened for defects in decolorization of an oxazine and diazo dye. We demonstrate that decolorization is an extracellular reduction process requiring a multicomponent electron transfer pathway that consists of cytoplasmic membrane, periplasmic and outer membrane components. The presence of melanin, a redox-active molecule excreted by S. oneidensis, was shown to enhance the dye reduction rates. Menaquinones and the cytochrome CymA are the crucial cytoplasmic membrane components of the pathway, which then branches off via a network of periplasmic cytochromes to three outer membrane cytochromes. The key proteins of this network are MtrA and OmcB in the periplasm and outer membrane respectively. A model of the complete dye reduction pathway is proposed in which the dye molecules are reduced by the outer membrane cytochromes either directly or indirectly via melanin.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.