Hydrolytic endonucleolytic ribozyme (HYER): Systematic identification, characterization and potential application in...

Area of Science:

• Molecular Biology
• Genetics
• Biochemistry

Background:

• Group II introns are mobile genetic elements that usually require both RNA and protein components for transposition.
• Recent findings suggest some bacterial Group II introns can propagate without protein factors.

Purpose of the Study:

• To systematically identify and characterize novel Group II introns lacking protein components.
• To investigate the DNA cleavage and manipulation capabilities of these protein-less introns.
• To introduce the term HYdrolytic Endonucleolytic Ribozymes (HYERs) for these functional elements.

Main Methods:

• Bioinformatic analysis for identifying potential HYER candidates in bacterial genomes.
• In vitro assays to confirm hydrolytic DNA cleavage activity.
• Functional assays in bacterial and mammalian cells to demonstrate DNA manipulation capabilities.

Main Results:

• Identified bacterial Group II introns that exist in multiple copies without associated proteins.
• Demonstrated that these identified introns possess active hydrolytic DNA cleavage functions.
• Confirmed the capability of these HYERs to manipulate DNA in both bacterial and mammalian cellular contexts.

Conclusions:

• Protein-less Group II introns, termed HYERs, exhibit intrinsic DNA cleavage and manipulation abilities.
• HYERs represent a novel class of ribozymes with potential applications in nucleic acid engineering.
• The study provides a protocol for HYER discovery and characterization, paving the way for their biotechnological use.