Fumaroylation: A New Hub Linking Metabolism and Epigenetic Regulation

Concept

Fumaroylation is a dynamic lysine acylation modification where a fumarate group is covalently attached to protein lysine residues. As a metabolite-driven epigenetic mark derived from the tricarboxylic acid (TCA) cycle intermediate fumarate, it directly couples cellular metabolic status to chromatin remodeling and gene expression. Governed by "writer," "eraser," and "reader" enzymes, fumaroylation acts as a critical molecular sensor bridging metabolism and epigenetics.

Research Frontier

Beyond classic acetylation and methylation, novel acylation modifications (succinylation, crotonylation, lactylation) are reshaping epigenetics. Fumaroylation has emerged as a hot frontier:

· Links TCA cycle metabolism to histone modification and transcription

· Regulates cellular stress responses (hypoxia, nutrient deprivation)

· Implicated in cancer, ischemia injury, and metabolic disorders

· Drives discovery of metabolite-based epigenetic drugs

Research Significance

Fumaroylation resolves a key biological question: how metabolic signals control gene expression. It:

· Neutralizes histone positive charge to relax chromatin and activate transcription

· Serves as a stress-responsive modification under hypoxia/nutrient stress

· Bridges metabolic dysregulation and disease pathogenesis

· Enables development of metabolism-targeted epigenetic therapies

Mechanisms and Product Applications

1. Writing, Erasing, and Reading Fumaroylation

· Writer: Putative acyltransferases (e.g., p300/CBP); fumaroyl-CoA as the acyl donor

· Eraser: SIRT5 (efficient defumaroylase)

· Reader: Specific binding proteins (under investigation)

2. Chromatin and Transcriptional Regulation

· Fumarate group neutralizes histone lysine positive charge → chromatin relaxation

· Correlates with active transcription (e.g., H3K9 fumaroylation)

· Regulates hypoxia-adaptive genes (angiogenesis, glycolysis)

3. Cellular Stress and Metabolic Adaptation

· Hypoxia: TCA block → fumarate accumulation → increased fumaroylation

· Nutrient stress: Modulates metabolic enzyme activity

· Mediates HIF and KEAP1-NRF2 signaling pathways

Brand Mission

ANT BIO PTE. LTD. advances metabolismepigenetics research via its Starter sub-brand. Our Fumaroyllysine Rabbit Polyclonal Antibody (S0B1322) enables specific detection of fumaroylated proteins, supporting stress response, disease mechanism, and modification omics studies.

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