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Updated: Jul 18, 2026

In vitro tRNA Methylation Assay with the Entamoeba histolytica DNA and tRNA Methyltransferase Dnmt2 (Ehmeth) Enzyme
Published on: October 19, 2010
S-Adenosylmethionine in protozoan parasites: functions, synthesis and regulation
Rosa M Reguera1, Carmen M Redondo, Yolanda Pérez-Pertejo
1Department of Pharmacology and Toxicology, University of León, Campus de Vegazana s/n, 24071 León, Spain.
Abstract:
S-adenosylmethionine is one of the most frequently used enzymatic substrates in all living organisms. It plays a role in all biological methyl transfer reactions in as much as it is a donor of propylamine groups in the synthesis of the polyamines spermidine and spermine, it participates in the trans-sulphuration pathway to cysteine one of the three amino acids involved in glutathione and trypanothione synthesis in trypanosomatids and finally it is a source of the 5-deoxyadenosyl radicals, which are involved in many reductive metabolic processes, biodegradative pathways, tRNA modification and DNA repair. This mini-review is an update of the progress on the S-adenosylmethionine synthesis in different representative protozoan parasites responsible for many of the most devastating so-called tropical diseases that have an enormous impact on global health.
Insights
S-adenosylmethionine (SAM) is vital for methyl transfers, polyamine synthesis, and radical generation in organisms. This review updates SAM synthesis in protozoan parasites causing tropical diseases.
Area of Science:
- Biochemistry
- Parasitology
- Molecular Biology
Background:
- S-adenosylmethionine (SAM) is a crucial universal biological methyl donor.
- SAM is involved in polyamine synthesis, trans-sulfuration pathways, and radical generation.
- Protozoan parasites causing tropical diseases rely on SAM for essential metabolic processes.
Purpose of the Study:
- To review recent advancements in S-adenosylmethionine synthesis.
- To focus on protozoan parasites responsible for significant global health burdens.
- To highlight the importance of SAM metabolism in parasitic diseases.
Main Methods:
- Literature review of recent research on SAM synthesis.
- Analysis of SAM metabolic pathways in various protozoan parasites.
- Comparative study of SAM synthesis across different parasitic species.
Main Results:
- Significant progress has been made in understanding SAM synthesis pathways in parasites.
- Key enzymes and regulatory mechanisms of SAM synthesis are being elucidated.
- Variations in SAM synthesis exist across different parasitic species, offering potential therapeutic targets.
Conclusions:
- Understanding SAM synthesis in protozoan parasites is critical for developing new anti-parasitic strategies.
- Targeting SAM metabolism could offer a novel approach to combatting tropical diseases.
- Further research into parasite-specific SAM pathways is warranted.
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