A monomeric StayGold fluorescent protein
Esther Ivorra-Molla1, Dipayan Akhuli1,2, Martin B L McAndrew3,4
1Centre for Mechanochemical Cell Biology and Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK.
Researchers developed mStayGold, a monomeric version of the bright and photostable StayGold fluorescent protein. This advancement overcomes limitations of the original dimer, enabling broader applications for fluorescent protein tagging.
Area of Science:
- Biochemistry
- Structural Biology
- Molecular Biology
Background:
- StayGold is a highly bright and photostable fluorescent protein.
- Its utility as a fluorescent tag is limited by its natural dimeric form.
Purpose of the Study:
- To determine the structure of StayGold.
- To engineer a monomeric derivative of StayGold with retained fluorescence properties.
Main Methods:
- X-ray crystallography to determine the 1.6 Å structure of StayGold.
- Protein engineering to create a monomeric variant.
Main Results:
- The 1.6 Å crystal structure of StayGold was elucidated.
- A monomeric derivative, mStayGold, was successfully generated.
- mStayGold preserves the brightness and photostability of the original StayGold protein.
Conclusions:
- The structural insights enabled the engineering of a monomeric fluorescent protein.
- mStayGold offers an improved alternative to StayGold for applications requiring monomeric fluorescent tags.
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