mTurquoise2 is an advanced cyan fluorescent protein optimized for exceptional brightness and photostability, making it one of the premier choices for live-cell imaging and Förster Resonance Energy Transfer (FRET) applications. Developed through targeted evolution, mTurquoise2 addresses the limitations of earlier cyan fluorescent proteins, offering significantly improved performance across a range of imaging conditions.
Key features of mTurquoise2 include:
Exceptional Photostability: mTurquoise2 is designed to resist photobleaching, making it ideal for long-term imaging experiments where signal persistence is critical.
High Brightness: With a quantum yield of 0.93 and an extinction coefficient of 30,000 M⁻¹cm⁻¹, mTurquoise2 is one of the brightest cyan fluorescent proteins available, providing strong signal even at low expression levels.
Optimized for FRET: mTurquoise2 is widely regarded as the best donor for FRET experiments involving yellow-green acceptor proteins including Allele’s mNeonGreen.
Monomeric Structure: Its monomeric nature ensures minimal interference with the function of fusion partners, making it suitable for tagging proteins in both localization and interaction studies.
Improved Folding and Maturation: mTurquoise2 exhibits faster and more efficient maturation compared to previous cyan proteins, ensuring consistent fluorescence in diverse experimental settings.
Excitation and Emission Peaks: mTurquoise2 is excited optimally at 434 nm and emits at 474 nm, making it compatible with standard cyan excitation sources and filters.
mTurquoise2 is an excellent choice for researchers requiring high performance in FRET, super-resolution imaging, and time-lapse microscopy, offering a combination of brightness, photostability, and compatibility that sets it apart in the field of fluorescent proteins.
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