Publications by authors named "Hongzhe Dong"
The origin of methyl group in methanogen-mediated mercury methylation: From the Wolfe cycle.
Proc Natl Acad Sci U S A
October 2024
Article Synopsis
- - Methylmercury (MeHg) is a harmful neurotoxin produced by specific microorganisms, with methanogens playing a key role in its synthesis; understanding the source of the methyl group for this process is essential but still unclear.
- - This research focused on the methanogen JF-1, demonstrating that the methylation of mercury is primarily linked to its methanogenesis process, and found that the methyl groups come mainly from the Wolfe cycle instead of the previously thought acetyl-coenzyme A pathway.
- - The study suggests that the Wolfe cycle-dependent mechanism for Hg methylation may be common among other mercury-methylating methanogens, providing insights that could aid in predicting and managing MeHg production and
Article Synopsis
- This study focuses on sulfate-reducing bacteria (SRB) and their crucial role in transforming mercury (Hg), highlighting a lack of understanding of their full response mechanisms to Hg exposure.
- The research constructed the first comprehensive protein-protein interaction (PPI) network for SRB under Hg stimuli, revealing widespread proteomic changes including aspects of microbial metabolism, nucleic acid repair, and antibiotic resistance.
- Findings suggest that Hg not only affects the biotransformation processes of SRB but also enhances their metabolic activities, impacting the carbon, nitrogen, and sulfur cycles at a cellular level.
Transformation of Mercuric Ions to Mercury Nanoparticles in Diatom .
Environ Sci Technol
December 2023
Particulate HgS play crucial roles in the mercury (Hg) cycle. Approximately 20-90% of dissolved Hg can be transformed into particulate HgS by algae. However, detailed knowledge regarding these particles, including sizes and distribution, remains unknown.
View Article and Find Full Text PDFFish consumption is one of the major ways through which humans receive exposure to mercury (Hg). The existing forms of Hg in food, particularly Hg bound to proteins, may affect the absorption of Hg by humans and subsequently its potentially toxic effects. However, the knowledge regarding Hg-binding proteins in edible fish muscle is scarce.
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