Endogenous expression and localization of HIS-72::mTurquoise2 in C. elegans

Area of Science:

• Molecular Biology
• Genetics
• Cell Biology

Background:

• Histones are crucial for DNA packaging and gene regulation.
• Fluorescently tagged histones are valuable tools for observing chromatin dynamics in vivo.
• Previous histone tagging in C. elegans used red/green fluorescent proteins.

Purpose of the Study:

• To generate a novel, non-red/green fluorescent fusion histone protein in C. elegans.
• To validate the localization pattern of the new HIS-72::mTurquoise2 fusion protein.

Main Methods:

• Utilized CRISPR gene editing technology.
• Generated a C-terminal mTurquoise2 tag for the HIS-72 gene.
• Targeted the endogenous HIS-72 locus in C. elegans.

Main Results:

• Successfully generated a HIS-72::mTurquoise2 fusion protein.
• Observed that HIS-72::mTurquoise2 exhibits a localization pattern comparable to the established HIS-72::GFP strain.
• Demonstrated a non-red/green fluorescent option for histone visualization.

Conclusions:

• The HIS-72::mTurquoise2 fusion protein is a viable tool for C. elegans research.
• This new tag provides an alternative to red/green fluorescent proteins for histone studies.
• CRISPR-mediated tagging at endogenous loci is effective for generating novel fluorescent protein tools.