DsRed2
DsRed2 (Ex-Max 561 nm/Em-Max 587 nm)
DsRed-2 is a tetrameric fluorescent protein first isolated from sea anemone of the Discosoma genus. It has an excitation peak at 561 nm and an emisison peak at 587 nm.
Excitation & emission spectra
Key facts
- Excitation maximum
- 561 nm
- Emission maximum
- 587 nm
- Optimal laser line
- 561
- Optimal filter
- 585/40
- Extinction coefficient
- 52000
- Quantum yield
- 0.55
- Molecular weight
- 25800
DsRed2 has an excitation maximum at 561 nm and an emission maximum at 587 nm, a Stokes shift of 26 nm. Its extinction coefficient is 52000 M⁻¹cm⁻¹. It is optimally excited by the 561 laser line.
Frequently asked questions
- What is DsRed2?
- DsRed-2 is a tetrameric fluorescent protein first isolated from sea anemone of the Discosoma genus. It has an excitation peak at 561 nm and an emisison peak at 587 nm.
- What laser excites DsRed2?
- DsRed2 is optimally excited by the 561 laser line. Its excitation maximum is 561 nm.
- What filter should I use to detect DsRed2?
- A 585/40 filter captures the peak of the DsRed2 emission near 587 nm with minimal spillover.