Resources

Proteomics Databases



Metabolomics Databases

• • Protein Mass Spectrometry: Comprehensive Comparison of Methods for Peptide Purity Detection

  Proteins are vital components of living organisms and are vital in the study of biological functions and drug development. As the building blocks of proteins, the purity detection of peptides is crucial for ensuring the accuracy of experimental results and the safety of drugs.

• • How Does the Order of Protein Mass Spectrometry Injection Affect the Identification of Peptide Structures?

  Proteins are one of the most important molecules in biological organisms, playing a key role in cellular functions and biological processes. Understanding the structure and function of proteins is of great significance in the study of biology and the development of biopharmaceuticals. Proteomic mass spectrometry is a common technique used to identify protein sequences and structures.

• • Quantification of Free Sulfhydryl Groups in Recombinant Protein Vaccines

  Recombinant protein vaccines are prepared using genetic engineering technology, with the aim of eliciting an immune response by expressing and producing specific proteins of pathogens. These vaccines do not contain complete active pathogens but select specific proteins or parts of the pathogens as antigens. In the structure of proteins, mercapto mainly exists in cysteine, playing a key role in protein folding and stability.

• • Mechanism of 2D-DIGE-Based Protein Quantification

  In proteomics research, accurate protein quantification is a fundamental task. Traditional protein quantification methods, such as one-dimensional polyacrylamide gel electrophoresis (1D-PAGE), often face limitations in resolution and sensitivity, making it difficult to distinguish and quantify proteins in complex samples precisely.

• • Workflow of 2D-DIGE-Based Protein Quantification

  Two-Dimensional Difference Gel Electrophoresis (2D-DIGE) is a powerful proteomics technique for the simultaneous separation and quantification of proteins from different biological samples. This technique significantly improves the accuracy and sensitivity of protein quantification by labeling and separating multiple samples on the same gel.

• • Application of 2D-DIGE-Based Protein Quantification

  Two-Dimensional Difference Gel Electrophoresis (2D-DIGE) is a powerful tool that combines traditional two-dimensional electrophoresis with fluorescent dye labeling technology, widely used for protein separation and quantitative analysis in proteomics. This technique has seen extensive application in studying protein expression changes under different conditions, protein-protein interactions, and identifying disease-related biomarkers.

• • Advantages and Disadvantages of 2D-DIGE-Based Protein Quantification

  Two-Dimensional Difference Gel Electrophoresis (2D-DIGE) is a crucial technique in proteomics research. It combines Two-Dimensional Electrophoresis (2DE) with fluorescent dye labeling, enabling the simultaneous analysis of protein expression levels from multiple samples on the same gel. The unique advantage of 2D-DIGE lies in its efficiency and accuracy in comparing differential protein expression under various conditions. However, there are also some limiting factors associated with this technique.

• • Principle of 2D-DIGE-Based Protein Quantification

  Two-dimensional difference gel electrophoresis (2D-DIGE) is a widely utilized technique in proteomics, particularly for the quantitative analysis of protein expression. 2D-DIGE merges the high-resolution separation capability of two-dimensional gel electrophoresis (2-DE) with the sensitivity of fluorescent dye labeling, enabling simultaneous analysis of multiple samples and allowing for the precise quantification of protein expression differences under various conditions.

• • Mechanism of DIA in Protein Quantification

  In modern proteomics research, protein quantification techniques have become essential tools. Data-Independent Acquisition (DIA) technology is rapidly emerging as a leading method in protein quantification due to its high throughput and precision.

• • Application of DIA in Protein Quantification

  Data-Independent Acquisition (DIA) technology has gained widespread attention in the field of proteomics in recent years. As a high-throughput protein quantification technology, DIA overcomes the limitations of traditional Data-Dependent Acquisition (DDA) technology by providing higher reproducibility and more comprehensive proteome coverage.