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Affinity chromatography with biotinylated RNAs.

S W Ruby, S E Goelz, Z Hostomsky

    Methods in Enzymology
    |January 1, 1990
    PubMed
    Summary
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    Reversibly biotinylated RNAs offer a versatile method for purifying RNA-binding proteins using affinity chromatography. A disulfide bond in the linker allows for mild elution of the purified components.

    Area of Science:

    • Biochemistry
    • Molecular Biology
    • Biotechnology

    Background:

    • Affinity chromatography is a powerful technique for purifying biomolecules.
    • RNA-binding proteins play crucial roles in various cellular processes.
    • Efficient methods for isolating RNA-binding proteins are essential for research.

    Purpose of the Study:

    • To develop versatile ligands for the affinity purification of RNA-binding components.
    • To create a method for reversible immobilization of RNA onto solid supports.
    • To enable mild elution conditions for captured RNA-binding molecules.

    Main Methods:

    • Synthesis of small, reversibly biotinylated RNAs.
    • Immobilization of biotinylated RNAs onto avidin-coated solid supports.

    Related Experiment Videos

  • Utilizing disulfide bond chemistry for controlled dissociation of the RNA-avidin complex.

    • Main Results:

    • Demonstrated the utility of biotinylated RNAs as ligands in affinity chromatography.
    • Established conditions for effective binding and subsequent mild elution of RNA and associated binding partners.
    • Showcased the reversibility of the biotin-RNA linkage via disulfide bond cleavage.

    Conclusions:

    • Reversibly biotinylated RNAs are effective and versatile ligands for affinity purification.
    • The disulfide bond linker allows for mild elution, preserving the integrity of captured molecules.
    • This approach is applicable to other reversibly biotinylated molecules beyond RNA.