RNA-TAG Mediated Protein-RNA Conjugation

Area of Science:

• Chemical Biology
• Molecular Biology
• Biotechnology

Background:

• Biological macromolecules like nucleic acids and proteins are crucial for cellular processes.
• Combining these molecules offers precise control but requires advanced conjugation methods.
• Existing methods lack site-specificity for creating diverse biomolecular conjugates.

Purpose of the Study:

• To develop a novel, fully enzymatic strategy for site-specific conjugation of nucleic acids and proteins.
• To demonstrate the versatility of this method for creating SNAP-tag - RNA conjugates.
• To apply the conjugation strategy for targeted RNA degradation using recruited endonucleases.

Main Methods:

• Utilized SNAP-tag and RNA-TAG (transglycosylation at guanosine) technologies.
• Employed a bifunctional preQ1-benzylguanine small molecule probe for conjugation.
• Demonstrated enzymatic assembly of SNAP-tag - RNA conjugates with varying RNA lengths.

Main Results:

• Successfully created site-specific SNAP-tag - RNA conjugates using the enzymatic strategy.
• Showcased the method's robustness with RNAs of different lengths.
• Recruited an endonuclease to a target RNA for degradation, validating the approach.

Conclusions:

• The developed enzymatic strategy enables predictable engineering of novel macromolecular complexes.
• This method advances chemical biology by providing precise control over biomolecular assemblies.
• Facilitates targeted manipulation of cellular processes through custom conjugate formation.