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Affinity Chromatography definitions

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  • Affinity Chromatography
    A column technique that isolates proteins by exploiting their specific binding to ligands attached to a stationary phase.
  • Column Chromatography
    A method where mixtures are separated as they pass through a packed tube, allowing for purification based on molecular properties.
  • Protein Purification
    The process of isolating a target protein from a complex mixture, often using selective binding strategies.
  • Ligand
    A small molecule covalently linked to a stationary phase, designed to bind specifically to a biomolecule such as a protein.
  • Stationary Phase
    The immobile material inside a column, often linked to ligands, which facilitates selective binding of target molecules.
  • Mobile Phase
    The solution that flows through the column, carrying unbound proteins and enabling separation and elution.
  • Target Protein
    The specific biomolecule intended for isolation, chosen for its unique binding affinity to a ligand.
  • Soluble Ligand
    A ligand added to the mobile phase with higher affinity for the target protein, used to elute it from the stationary phase.
  • Elution
    The process of releasing bound molecules from the stationary phase, often achieved by adding a competing ligand or salt.
  • Specificity
    The degree to which a purification method selectively isolates the desired protein, enhanced by precise ligand-protein interactions.
  • Salt
    An economical agent used in the mobile phase to weaken protein-ligand interactions and facilitate elution.
  • Proteomics
    The large-scale study of proteins, where advanced purification techniques like affinity chromatography are essential.
  • Covalent Linkage
    A strong chemical bond connecting ligands to the stationary phase, ensuring their stability during purification.
  • Complex
    A structure formed when a ligand binds to a biomolecule, such as a protein, during the purification process.
  • Charged Protein
    A protein with positive, negative, or neutral charge, influencing its behavior during separation in chromatography.