PMID- 25058513 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20161230 IS - 1549-7828 (Electronic) IS - 1040-841X (Linking) VI - 42 IP - 2 DP - 2016 TI - Microbial degradation of 2,4-dichlorophenoxyacetic acid: Insight into the enzymes and catabolic genes involved, their regulation and biotechnological implications. PG - 194-208 LID - 10.3109/1040841X.2014.917068 [doi] AB - A considerable progress has been made to understand the mechanisms of biodegradation of 2,4-dichlorophenoxyacetic acid (2,4-D). 2,4-D biodegradation pathway has been elucidated in many microorganisms including Cupriavidus necator JMP134 (previously known as Wautersia eutropha, Ralstonia eutropha and Alcaligenes eutrophus) and Pseudomonas strains. It generally involves the side chain removal of 2,4-D by alpha-ketoglutarate-dependent 2,4-D dioxygenase (tfdA) to form 2,4-dichlorophenol (2,4-DCP); hydroxylation of 2,4-DCP by 2,4-DCP hydroxylase (tfdB) to form dichlorocatechol; ortho or meta cleavage of dichlorocatechol by chlorocatechol 1,2-dioxygenase (tfdC) to form 2,4-dichloro-cis,cis-muconate; conversion of 2,4-dichloro-cis,cis-muconate to 2-chlorodienelactone by chloromuconate cycloisomerase (tfdD); conversion of 2-chlorodienelactone to 2-chloromaleylacetate by chlorodienelactone hydrolase (tfdE) and, finally, conversion of 2-chloromaleylacetate to 3-oxoadepate via maleylacetate by chloromaleylacetate reductase and maleylacetate reductase (tfdF), respectively, which is funnelled to the tricarboxylic acid cycle. The latest review on microbial breakdown of 2,4-D, other halogenated aromatic pesticides, and related compounds was compiled by Haggblom, however, a considerable progress has been made in this area of research since then. Thus, this review focuses on the recent advancement on 2,4-D biodegradation, the enzymes, and genes involved and their biotechlogical implications. FAU - Kumar, Ajit AU - Kumar A AD - a Department of Microbiology , School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu Natal , Westville Campus , Durban , South Africa and. FAU - Trefault, Nicole AU - Trefault N AD - b Centro de Genomicay Bioinformatica, Instituto de Biotecnologia, Universidad Mayor, Campus Huechuraba, Camino a La Piramide , Santiago , Chile. FAU - Olaniran, Ademola Olufolahan AU - Olaniran AO AD - a Department of Microbiology , School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu Natal , Westville Campus , Durban , South Africa and. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20140724 PL - England TA - Crit Rev Microbiol JT - Critical reviews in microbiology JID - 8914274 RN - 2577AQ9262 (2,4-Dichlorophenoxyacetic Acid) RN - 4EMM3U5P3K (4-chlorophenoxyacetic acid) SB - IM MH - 2,4-Dichlorophenoxyacetic Acid/analogs & derivatives/*metabolism MH - Bacteria/genetics/metabolism MH - *Biodegradation, Environmental MH - *Biotechnology/methods MH - Evolution, Molecular MH - Fungi/genetics/metabolism MH - Gene Expression Regulation MH - Gene Expression Regulation, Enzymologic MH - Humans MH - Metabolic Networks and Pathways MH - *Microbiological Techniques/methods MH - Nanoparticles OTO - NOTNLM OT - Cupriviadus necator JMP134, 2-chloromaleylacetate, dichlorocatechol, dichlorophenol, 2,4-dichloro-cis,cis-muconate, 2,4-dichlorophenoxyacetic acid, maleylacetate, tfd genes EDAT- 2014/07/25 06:00 MHDA- 2016/12/15 06:00 CRDT- 2014/07/25 06:00 PHST- 2014/07/25 06:00 [entrez] PHST- 2014/07/25 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] AID - 10.3109/1040841X.2014.917068 [doi] PST - ppublish SO - Crit Rev Microbiol. 2016;42(2):194-208. doi: 10.3109/1040841X.2014.917068. Epub 2014 Jul 24.