Lysine Succinylation: A Metabolic PTM Switch Regulating Mitochondrial Energy Homeostasis
Core Biochemical Definition & Discovery Background of Lysine Succinylation
Lysine succinylation (Ksucc) is a novel covalent post-translational modification first documented in a landmark 2011 Nature Chemical Biology study led by Zhao Yingming’s research group. This chemical reaction attaches negatively charged succinyl groups to lysine side chains, drastically altering substrate protein electrostatic properties compared to acetylation or methylation. Succinyl-CoA, the modification’s exclusive metabolic donor, originates from mitochondrial tricarboxylic acid (TCA cycle) flux, establishing a direct molecular bridge between cellular nutrient status and proteomic function. Early mechanistic research identified dual regulatory modes for this PTM: spontaneous non-enzymatic tagging driven by high succinyl-CoA concentrations, and catalyzed reactions mediated by writer enzymes including p300/CBP and α-KGDHC complexes. SIRT5 and SIRT7 act as primary desuccinylase erasers to dynamically reverse succinylation marks and maintain metabolic signal balance within mammalian cell compartments.
Multi-Tissue Regulatory Roles of Succinylation Across Preclinical Disease Models
Succinylation acts as a universal metabolic signaling switch with divergent functional outputs across tumor, hepatic, neurological and metabolic disease experimental systems. In glioblastoma nuclear compartments, KAT2A-α-KGDHC complexes deposit H3K79 succinylation to activate proliferative oncogenic transcription programs and accelerate xenograft tumor expansion. Hepatocellular carcinoma models show OXCT1-mediated LACTB K284 succinylation inhibits protease activity, stabilizing mitochondrial respiratory chains to sustain malignant energy production. Lung adenoma SUCLG2 succinylation blocks ubiquitin-dependent degradation cascades, rewiring glycolysis-TCA crosstalk to support rapid tumor cell division. Hepatic tissue SIRT5 deletion elevates ASS1 K112 succinylation and impairs urea cycle ammonia detoxification pathways, forming a core mechanistic model for hyperammonemia basic research. Acetaminophen-induced liver injury assays confirm SIRT5-dependent ALDH2 desuccinylation restores antioxidant enzyme activity and suppress mitochondrial oxidative stress signaling.
Succinylation-Mediated Pathogenesis in Neurodegenerative & Cardiac Research
Alzheimer’s disease preclinical specimens display perturbed succinylation profiles on Tau and APP proteins, correlating with progressive neuronal dysfunction and plaque aggregation phenotypes. Cadmium toxicology research demonstrates SIRT5 removes RAB7A succinylation to preserve intact autophagic flux and mitigate heavy metal-triggered neurodegeneration. Diabetic cardiomyopathy experimental systems reveal SIRT5 catalyzed CPT2 desuccinylation restores fatty acid oxidation enzyme function, alleviating myocardial lipotoxicity and contractile impairment under hyperglycemic culture conditions. Plant stress biology extends this modification’s conserved regulatory function: cotton GhPSB27 dual lysine succinylation and lactylation balances photosynthetic efficiency alongside reactive oxygen species clearance during Verticillium pathogen infection cycles.
Inter-PTM Crosstalk & Systemic Succinylome Research Paradigms
Modern succinylation research has evolved from single-protein site validation toward full-proteome network analysis focused on PTM crosstalk events. A well-characterized regulatory loop involves SUCLG2 succinylation suppressing K48-linked polyubiquitination, elevating enzyme half-life and reshaping overall TCA cycle throughput. Systematic pan-succinylome profiling relies on two interconnected experimental pipelines: antibody-based enrichment followed by LC-MS/MS mass spectrometry and semi-quantitative Western blot comparative screening across treated/control sample cohorts. Pan-succinyllysine antibodies serve as the foundational frontline tool for unbiased global modification landscape mapping before targeted site-specific mechanistic validation experiments.
Standard Experimental Workflows Utilizing Pan-Succinyllysine Antibodies
Three standardized multi-omics pipelines depend on high-specificity succinylation detection reagents for reproducible metabolic PTM profiling. Whole-cell Western blot screening quantifies global succinylation abundance shifts after metabolite supplementation or SIRT inhibitor compound incubation to identify candidate regulatory proteins. Immunoprecipitation coupled with LC-MS/MS leverages pan-succinyl antibodies to pull down all succinylated peptide pools, enabling unbiased identification of modified metabolic enzymes and histones. Tissue multiplex immunohistochemistry visualizes spatial succinylation gradients within heterogeneous tumor and hepatic lesion microdomains to link modification levels with pathological staging metrics. ChIP-seq applications utilize the same reagent to map succinylated histone enrichment at active gene enhancer loci governing metabolic transcriptional circuits.
Core Performance Specifications of S0B1272 Succinyllysine Rabbit Polyclonal Antibody
ANT BIO PTE. LTD. S0B1272 Succinyllysine Rabbit Polyclonal Antibody is produced using purified succinylated synthetic peptide immunogens with rigorous multi-layer specificity validation protocols. Peptide competition dot blot testing confirms negligible cross-recognition against acetyl, lactyl and crotonyl lysine PTM epitopes, eliminating off-target band interference during complex lysate analysis. Protein A affinity chromatography delivers high-purity IgG preparations with consistent lot-to-lot signal uniformity for long-term serial tissue microarray screening campaigns. Validated working dilutions are defined for WB (1:1000–1:2000), FFPE IHC (1:1500) and immunoprecipitation workflows. Unconjugated liquid storage in glycerol-supplemented PBS maintains stable epitope binding affinity for 12 months under -20°C cryogenic preservation conditions.
Fundamental Research Applications of ANT BIO PTE. LTD. Succinylation Antibody
Tumor metabolism screening utilizes S0B1272 to profile dynamic succinylation remodeling after SIRT5 or SUCLG2 genetic manipulation across glioma, liver and lung carcinoma cell lines. Hepatic injury comparative blots quantify ALDH2 and ASS1 succinylation shifts under oxidative toxin stimulation to dissect liver protective signaling axes. Neurodegeneration tissue IHC maps Tau/APP succinylation distribution within murine hippocampal neuronal compartments for aging mechanism research. Cardiac metabolic pathway assays track CPT2 succinylation fluctuations under high-glucose culture to model diabetic cardiomyopathy metabolic reprogramming. Plant pathogen response Western blot compares GhPSB27 succinylation levels between infected and healthy cotton tissue extracts for crop stress resistance mechanism analysis.
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