Comparison among bright green fluorescent proteins in C. elegans
1Graduate Program in Cell and Developmental Biology, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada.
We compared brightness and photostability of Green Fluorescent Protein (GFP) variants in C. elegans. mStayGold demonstrated superior brightness and photostability compared to eGFP, GFPnovo2, and mNeonGreen.
Area of Science:
- Biochemistry
- Cell Biology
- Genetics
Background:
- Green fluorescent proteins (GFPs) are essential for biological imaging.
- Enhanced GFPs (e.g., eGFP, GFPnovo2, mNeonGreen, mStayGold) aim for improved brightness and photostability.
Purpose of the Study:
- To generate and compare single-copy knock-in C. elegans strains for multiple GFP variants.
- To evaluate the brightness and photostability of mStayGold against other GFP variants.
Main Methods:
- Generation of single-copy knock-in C. elegans strains for eGFP, GFPnovo2, mNeonGreen, and mStayGold.
- Direct comparison of fluorescence brightness and photostability across these GFP variants in vivo.
Main Results:
- mStayGold exhibited significantly higher brightness compared to eGFP, GFPnovo2, and mNeonGreen.
- mStayGold demonstrated enhanced photostability over the other tested GFP variants.
Conclusions:
- mStayGold offers advantages in brightness and photostability for C. elegans imaging.
- This finding suggests mStayGold is a valuable tool for demanding fluorescence microscopy applications.
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