Protein Dimer Elution
Protein Dimer Elution - Related Videos
11:38
CN-GELFrEE - Clear Native Gel-eluted Liquid Fraction Entrapment Electrophoresis
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Cited by 11 •
2016
This protocol describes how to prepare and perform clear native gel-eluted liquid fraction entrapment electrophoresis (CN-GELFrEE), a native separation technique for non-covalent biomolecular assemblies and proteins from heterogeneous samples that is compatible with various downstream protein analysis techniques.
10:53
Isolation of Cognate RNA-protein Complexes from Cells Using Oligonucleotide-directed Elution
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Cited by 3 •
2017
This manuscript describes an approach to isolate select cognate RNPs formed in eukaryotic cells via a specific oligonucleotide-directed enrichment. We demonstrate the applicability of this approach by isolating a cognate RNP bound to the retroviral 5' untranslated region that is composed of DHX9/RNA helicase A.
01:05
High-Performance Liquid Chromatography: Elution Process
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2024
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
03:41
DFE-Based Affinity Chromatography: A Technique for Purification of 2F5 Monoclonal Antibodies from a Crude Sample Using High Ionic Strength-Based Elution Conditions
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2025
This video describes an affinity chromatography technique for purifying 2F5 monoclonal antibodies using the DsRed-2F5-Epitope or DFE ligands. The purified 2F5 monoclonal antibodies are essential drugs in immunotherapy.
06:26
Rapid Assessment of Membrane Protein Quality by Fluorescent Size Exclusion Chromatography
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Cited by 2 •
2023
The present protocol describes a procedure to perform fluorescent size exclusion chromatography (FSEC) on membrane proteins to assess their quality for downstream functional and structural analysis. Representative FSEC results collected for several G-protein coupled receptors (GPCRs) under detergent-solubilized and detergent-free conditions are presented.
FAQs
Separation can rely on hydrodynamic size, affinity for a ligand, or charge. Hydrodynamic size reflects how a species behaves in the separation medium, while affinity and charge provide different bases for resolving protein forms. After separation, the elution step releases the resolved species, allowing researchers to examine whether the recovered material corresponds to a dimer rather than another oligomeric state.
The elution conditions can either maintain dimer formation or intentionally disrupt it, depending on the experimental goal. Preserving the dimer supports analysis of its native assembly, stability, purity, and activity. Disruption can help reveal how strongly subunits associate or whether the recovered material changes from a dimeric state, providing information about oligomerization behavior.
The recovered species can be assessed for assembly, stability, purity, and biological activity. Detecting a defined dimer after separation supports the interpretation that the oligomeric state remained intact during recovery. Conversely, evidence of monomers or larger complexes can indicate altered assembly or incomplete resolution, helping researchers evaluate the stability and composition of the protein preparation.
A typical workflow begins by applying the protein mixture to a separation medium and resolving species according to size, ligand affinity, or charge. Researchers then select elution conditions that release the separated fraction while either preserving or disrupting dimer formation. The recovered material can subsequently be examined for its oligomeric state, purity, stability, and activity.
This approach is useful when researchers need to isolate or characterize a defined oligomeric state. It supports studies of enzyme function, receptor signaling, structural biology, and protein engineering. In each setting, recovering the dimer separately from monomers or larger complexes helps connect protein assembly with properties such as biological activity, structural behavior, or engineered performance.
Separating and recovering the dimer allows researchers to relate a specific oligomeric state to biological activity. For enzymes, this can support examination of how assembly relates to function. For receptors, it can contribute to studies of signaling-related organization. The same strategy also provides a defined material for structural biology and protein-engineering investigations.