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Lysine succinylation in protein is one type of post-translational modifications (PTMs). Succinylation is associated with some diseases and succinylated sites data just has been found in recent years in experiments. It is highly desired to develop computational methods to identify the candidate proteins and their sites. In view of this, a new predictor called iSuc-PseAAC was proposed by incorporating the peptide position-specific propensity into the general form of pseudo amino acid composition. The accuracy is 79.94%, sensitivity 51.07%, specificity 89.42% and MCC 0.431 in leave-one-out cross validation with support vector machine algorithm. It demonstrated by rigorous leave-one-out on stringent benchmark dataset that the new predictor is quite promising and may become a useful high throughput tool in this area. Meanwhile a user-friendly web-server for iSuc-PseAAC is accessible at http://app.aporc.org/iSuc-PseAAC/. Users can easily obtain their desired results without the need to understand the complicated mathematical equations presented in this paper just for its integrity.
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http://dx.doi.org/10.1038/srep10184 | DOI Listing |
Cancers (Basel)
August 2025
Institute of Biochemistry, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Lysine succinylation is a recently discovered post-translational protein modification, the process of which requires the participation of various enzymes. The close association between cancer and protein post-translational modifications (PTMs), such as acetylation and phosphorylation, has been extensively investigated and well-established. In recent years, growing attention has been directed toward the role of succinylation in cancer progression.
View Article and Find Full Text PDFInt J Surg
August 2025
Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China.
Lysine succinylation is the covalent modification of succinyl groups (-CO-CH ₂ -CH ₂ -COOH) to lysine residues of target proteins, which causes conformational changes and regulates their functional states. In this figure, mitochondria are used as the metabolic hub to summarize the production and consumption of succinyl-CoA in the TCA cycle and mediate the succinylation of key enzymes and transcription factors such as PDH, SDH, GLUD1, HMGCS2, and FEN1. The central region showed the negative regulation of SIRT5/SIRT7 and the positive regulation of KAT2A, alpha-KGDH, CPT1A, HAT1, and other acyltransferases.
View Article and Find Full Text PDFMol Oral Microbiol
August 2025
State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
Lysine succinylation (Ksuc) is a novel post-translational modification (PTM), which regulates biological functions in bacteria. Streptococcus mutans has been identified as a predominant cariogenic pathogen responsible for the initiation and progression of dental caries. However, lysine succinylation in S.
View Article and Find Full Text PDFArch Biochem Biophys
August 2025
Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, Ch
Lysine succinylation is a major post-translational modification affecting diverse proteins, and its excessive occurrence can lead to protein misfolding and aggregation-hallmarks of various proteinopathies, such as amyloid-β and Tau tangle formation in Alzheimer's disease and islet amyloid polypeptide aggregation in type 2 diabetes. Here, we investigated the inhibitory effects of bile acid metabolites (deoxycholic acid, glycocholic acid, and taurocholic acid sodium) and natural polyphenols (anthocyanin and salidroside) on succinylation and succinylation-induced amyloid aggregation. Succinylation levels were evaluated using the ninhydrin assay before and after treatment, and aggregation behavior and structural alterations were characterized by SDS-PAGE, inverted fluorescence microscopy, and intrinsic fluorescence spectroscopy.
View Article and Find Full Text PDFPLoS One
August 2025
Department of Orthopedics, Tongren Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Background: Ferroptosis of chondrocytes plays a crucial role in the progression of osteoarthritis (OA). This study aimed to explore the role of curcumin (Cur) in interfering with chondrocyte ferroptosis in OA.
Methods: Rat chondrocytes were treated with 10 ng/mL interleukin-1β (IL-1β) for 48 hours to mimic the OA microenvironment.