ArticleApplied and environmental microbiology2014
A novel (S)-6-hydroxynicotine oxidase gene from Shinella sp. strain HZN7.
Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.
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Who cites it
16 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.
- Insights into Pharmacological Activities of Nicotine and 6-Hydroxy-L-nicotine, a Bacterial Nicotine Derivative: A Systematic Review.Biomolecules · 2023Pooled it
- Biotechnological potential of Paenarthrobacter nicotinovorans ATCC 49919 for the microbial conversion of nicotine and tobacco extracts into 6-hydroxynicotine.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2026Article
- Dehydrogenases in the Flavoprotein Amine Oxidoreductase Superfamily.Biochemistry · 2025Article
- Ancestral evolution of oxidase activity in a class of (S)-nicotine and (S)-6-hydroxynicotine-degrading flavoenzymes.The Journal of biological chemistry · 2025Article
- Bacillus sp. YC7 from intestines of Lasioderma serricorne degrades nicotine due to nicotine dehydrogenase.AMB Express · 2023Article
- 6-Hydroxypseudooxynicotine Dehydrogenase Delivers Electrons to Electron Transfer Flavoprotein during Nicotine Degradation by Agrobacterium tumefaciens S33.Applied and environmental microbiology · 2019Article
- The enzymes of microbial nicotine metabolism.Beilstein journal of organic chemistry · 2018Review
- Periplasmic Nicotine Dehydrogenase NdhAB Utilizes Pseudoazurin as Its Physiological Electron Acceptor in Agrobacterium tumefaciens S33.Applied and environmental microbiology · 2017Article
- Genomic and transcriptomic analyses of Agrobacterium tumefaciens S33 reveal the molecular mechanism of a novel hybrid nicotine-degrading pathway.Scientific reports · 2017Article
- A Shinella β-N-acetylglucosaminidase of glycoside hydrolase family 20 displays novel biochemical and molecular characteristics.Extremophiles : life under extreme conditions · 2017Article
- Characterization and Genome Analysis of a Nicotine and Nicotinic Acid-Degrading Strain Pseudomonas putida JQ581 Isolated from Marine.Marine drugs · 2017Article
- Biodegradation of Picolinic Acid by a Newly Isolated Bacterium Alcaligenes faecalis Strain JQ135.Current microbiology · 2017Article
- Green route to synthesis of valuable chemical 6-hydroxynicotine from nicotine in tobacco wastes using genetically engineeredBiotechnology for biofuels · 2017Article
- Nicotine Dehydrogenase Complexed with 6-Hydroxypseudooxynicotine Oxidase Involved in the Hybrid Nicotine-Degrading Pathway in Agrobacterium tumefaciens S33.Applied and environmental microbiology · 2016Article
- The Complete Genome Sequence of the Nicotine-Degrading Bacterium Shinella sp. HZN7.Frontiers in microbiology · 2016Article
- Molybdenum-containing nicotine hydroxylase genes in a nicotine degradation pathway that is a variant of the pyridine and pyrrolidine pathways.Applied and environmental microbiology · 2015Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nicotine is an important environmental toxicant in tobacco waste. Shinella sp. strain HZN7 can metabolize nicotine into nontoxic compounds via variations of the pyridine and pyrrolidine pathways. However, the catabolic mechanism of this variant pathway at the gene or enzyme level is still unknown. In this study, two 6-hydroxynicotine degradation-deficient mutants, N7-M9 and N7-W3, were generated by transposon mutagenesis. The corresponding mutant genes, designated nctB and tnp2, were cloned and analyzed. The nctB gene encodes a novel flavin adenine dinucleotide-containing (S)-6-hydroxynicotine oxidase that converts (S)-6-hydroxynicotine into 6-hydroxy-N-methylmyosmine and then spontaneously hydrolyzes into 6-hydroxypseudooxynicotine. The deletion and complementation of the nctB gene showed that this enzyme is essential for nicotine or (S)-6-hydroxynicotine degradation. Purified NctB could also convert (S)-nicotine into N-methylmyosmine, which spontaneously hydrolyzed into pseudooxynicotine. The kinetic constants of NctB toward (S)-6-hydroxynicotine (Km = 0.019 mM, kcat = 7.3 s(-1)) and nicotine (Km = 2.03 mM, kcat = 0.396 s(-1)) indicated that (S)-6-hydroxynicotine is the preferred substrate in vivo. NctB showed no activities toward the R enantiomer of nicotine or 6-hydroxynicotine. Strain HZN7 could degrade (R)-nicotine into (R)-6-hydroxynicotine without any further degradation. The tnp2 gene from mutant N7-W3 encodes a putative transposase, and its deletion did not abolish the nicotine degradation activity. This study advances the understanding of the microbial diversity of nicotine biodegradation.
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