Expanded Analyte Isolation of Weakly- or Transiently-Bound Species through ESP™ and the Gilson EXTRACTMAN<sup>®</sup>

20 Dec 2017

Most proteins perform their function through interaction with other molecules, including other proteins. These protein-protein complexes may occur constitutively or transiently with varying levels of affinity. Identifying the proteins that form these functional complexes may help researchers to understand a process or disease. One approach for identifying protein-protein interactions is co-immuno-precipitation (Co-IP). This application note describes how Gilson’s EXTRACTMAN® was used to isolate a previously undetected protein-protein complex.

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Western BlottingWestern blotting equipment is used to transfer and identify specific proteins within a sample, reveal protein modifications, as well as give a semi-quantitative estimation of their concentration. Western blotting equipment includes all apparatus necessary to transfer proteins from gel to membrane and subsequent processing steps. Protein transfer can be performed by electroblotting with wet, semi-dry and dry transfer systems onto nitrocellulose and PVDF membranes. Blocking, washing and labeling of membranes follows, involving buffers, blocking reagents, blotting / incubation trays, labeling reagents, immunoblotting assays, antibodies and conjugates. Automated equipment for these steps is available to accelerate your lab workflow. Finally, detection and imaging of proteins can be conducted using gel documentation and imaging systems. Find the best western blotting equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.ProteomicsProteomics is the systemic bioinformatics study of proteins and amino acids, including their structure, size, function and identification. Tools used in proteomics include chromatography, blotting and gels, protein arrays, mass spectrometry and ELISA and associated analysis software. Analyzers and proteomic systems should be sensitive, high resolution, fast and may be automated for high-throughput.Cell-Based AssaysCell-based assays are used to monitor the presence, quantity and activities of a desired cellular analyte including drug molecules or biomarkers. This can reveal information on cell health (apoptosis, cytotoxicity, viability and proliferation assays), cell metabolism, cell migration and cell signaling mechanisms. Find the best cell-based assay products, kits and equipment with our peer reviewed product directory: compare products, check customer reviews and receiving pricing direct from manufacturers.Protein PurificationProtein purification is a vital step in drug discovery, therapeutics, biotech and life science research. The purification process typically involves subcellular or membrane protein extraction with cell lysis kits, separation of proteins from cell debris by filtration or spin columns, and the isolation of proteins of interest from other proteins and impurities with affinity purification (including fusion protein tags and antibody binding proteins A, G and L), immunoprecipitation or chromatographic methods, such as ion exchange, size exclusion and immobilized metal affinity chromatography. All purification methods come in multiple formats for your laboratory needs, including agarose or magnetic beads, resins, columns and filter plates. Find the best protein purification equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Bioprocessing / FermentationBioprocessing is the use of biological materials to perform commercial, scientific or medical research processes. Biological materials used include cells, enzymes and organisms. Usually bioprocessing requires a batch or continuous bioreactor such as a fermentor or cell culture system. The advantages of using a reactor include high productivity, easy configuration, adjustable values and automation.Protein ExpressionProtein InteractionsProtein interactions are essential for understanding cellular processes, as proteins work together to carry out biological functions. Studying protein interactions can provide insights into disease mechanisms, drug development, and cell signaling pathways. Explore the best tools for protein interaction research in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.ImmunoprecipitationProteomicsProteomics refers to the analysis of proteins through a variety of different experiments in order to understand structure and functionality. Typical techniques include protein purification and mass spectrometry.
Expanded Analyte Isolation of Weakly- or Transiently-Bound Species through ESP™ and the Gilson EXTRACTMAN<sup>®</sup>