Methylation cycle

The methylation cycle is a biochemical pathway that involves the transfer of methyl groups and plays critical roles in various cellular processes including gene expression regulation and cell proliferation.

Studies have highlighted the importance of methylation in different contexts, such as its role in mercury methylation in estuarine sediments and its contribution to cell cycle progression and proliferation through protein modifications. Additionally, research has shown that DNA methylation patterns can change during cell division in bacteria like Caulobacter, influencing gene activity. In yeast, misregulation of methylation at centromeres can lead to chromosomal instability.

This pathway connects closely with cellular processes involving gene regulation and cell cycle control, as well as environmental interactions where methyl groups are involved in the transformation of substances like mercury. Understanding these connections helps in grasping broader impacts on health and environment.

The evidence base is still developing, particularly regarding direct human health implications beyond basic biological functions.

Sources

• Role of sulfur biogeochemical cycle in mercury methylation in estuarine sediments: A review. (PMID:34523493)
• Methylation of KSHV vCyclin by PRMT5 contributes to cell cycle progression and cell proliferation. (PMID:39255317)
• DNA methylation in Caulobacter and other Alphaproteobacteria during cell cycle progression. (PMID:24894626)
• Misregulation of cell cycle-dependent methylation of budding yeast CENP-A contributes to chromosomal instability. (PMID:37436802)
• Methylation-specific PCR: a novel PCR assay for methylation status of CpG islands. (PMID:8790415)
• The origin of methyl group in methanogen-mediated mercury methylation: From the Wolfe cycle. (PMID:39382993)

_Worker-drafted node, Hermes writer enrichment, pending editorial review._