Resources

Proteomics Databases



Metabolomics Databases

• • MtoZ Biolabs: Comprehensive Proteomics Services

  Proteomics is the large-scale study of proteins, the vital executors of life processes, which are responsible for a range of biological functions, from cellular structure to signal transduction and metabolism. Our proteomics services at MtoZ Biolabs aim to analyze and quantify the entire set of proteins expressed by a cell, tissue, or organism. We provide solutions for identifying proteins, elucidating their structure, post-translational modifications, and interactions, offering deep insights into biologica

• • Detection of Glycosylation Modifications in Proteins

  Glycosylation refers to the attachment of carbohydrate moieties (glycans) to proteins, significantly influencing their structure, stability, and function. There are two main types of glycosylation: N-linked glycosylation, where glycans are attached to the nitrogen atom of asparagine residues, and O-linked glycosylation, where glycans are attached to the oxygen atom of serine or threonine residues.

• • Procedure for Ubiquitin Proteomics Analysis

  Ubiquitin proteomics involves identifying and quantifying ubiquitinated proteins within a biological sample. This comprehensive analysis helps elucidate the dynamics of ubiquitination and its impact on cellular functions. The workflow for ubiquitin proteomics is complex and involves several critical steps, including sample preparation, ubiquitin enrichment, mass spectrometry analysis, and data interpretation.

• • Analysis of Protein-Protein Interactions Using Pull-Down Assays

  Pull-down assays are in vitro techniques used to study and validate PPIs. These assays rely on the affinity purification principle, where a bait protein is used to "pull down" a prey protein from a mixture, allowing for the identification and analysis of protein complexes. The method is versatile and can be used to confirm known interactions or discover novel ones.

• • Workflow for Phospho Proteomics Analysis

  Phospho proteomics involves the identification and quantification of phosphorylated proteins and peptides. This analysis provides insights into the dynamics of phosphorylation and its role in cellular functions. The workflow for phospho proteomics is complex and involves several critical steps, including sample preparation, protein digestion, phosphopeptide enrichment, mass spectrometry analysis, and data interpretation.

• • Procedure for Protein Identification Using LC-MS/MS

  Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is a highly sophisticated and powerful technique used for protein identification and characterization. LC-MS/MS combines liquid chromatography (LC) with tandem mass spectrometry (MS/MS), allowing for the separation, detection, and identification of complex protein mixtures. LC separates peptides based on their physical and chemical properties, while MS/MS provides detailed information about the peptides' mass and structure.

• • Procedure for Protein Mass Measurement Using MALDI-TOF

  MALDI-TOF MS combines two technologies: matrix-assisted laser desorption/ionization (MALDI) and time-of-flight (TOF) mass spectrometry. This technique is known for its high sensitivity, speed, and ability to analyze large biomolecules, making it particularly suitable for protein analysis. MALDI-TOF MS is widely used in proteomics for protein identification, characterization, and quantification.

• • Procedure for Mass Spectrometry-Based Protein Identification

  Mass spectrometry is an analytical technique that measures the mass-to-charge ratio (m/z) of ions to identify and quantify molecules. In proteomics, MS is used to analyze protein samples, enabling the identification of proteins, determination of their post-translational modifications (PTMs), and elucidation of their structural and functional properties.

• • Impurity Detection Based on SEC and RPLC Methods

  In protein purity analysis, detecting impurities is crucial for assessing the quality of the sample. Reverse-phase high-performance liquid chromatography (RP-HPLC) and size exclusion chromatography (SEC) are widely used techniques, each offering specific advantages in detecting and separating impurities in protein samples.

• • Detection and Analysis of Protein Post-Translational Modifications

  Protein post-translational modifications (PTMs) are crucial for the regulation of cellular processes and the functional diversification of proteins. PTMs occur after protein biosynthesis, altering protein properties such as activity, localization, stability, and interactions. Understanding PTMs is essential for comprehending cellular mechanisms and disease pathogenesis.