fwYellow, yellow chromoprotein
This chromoprotein (also known as FezziwigYFP) naturally exhibits strong color when expressed. Compared to many other chromoproteins, such as amilCP (BBa_K592009), amilGFP (BBa_K592010), spisPink (BBa_K1033932), asPink (BBa_K1033933) and aeBlue (BBa_K864401), the color development is slower. The color is readily observed in both LB or on agar plates after 24-64 hours of incubation.
Usage and Biology
This part is useful as a reporter.
iGEM13_Uppsala: Expression of chromoproteins. The images above show E coli constitutively expressing meffRed BBa_K1033922, aeBlue BBa_K1033929, tsPurple BBa_K1033905, asPink (asCP) BBa_K1033927, fwYellow BBa_K1033910, meffBlue BBa_K1033902, meffRed BBa_K1033922 and scOrange BBa_K1033913.
Sequence and Features
- 10COMPATIBLE WITH RFC
- 12COMPATIBLE WITH RFC
- 21COMPATIBLE WITH RFC
- 23COMPATIBLE WITH RFC
- 25Illegal AgeI site found at 109
- 1000Illegal SapI.rc site found at 486
Characterization: NWU-China 2019
The NWU-China team overexpressed fwYellow protein in E. coli and extracted and purified. The maximum absorbance was measured in a 96-well plate using a microplate reader (Synergy 2).
At the same time, fwYellow can emit strong fluorescence under blue light excitation.
When we used the microplate reader to measure the excitation light and absorbed light, we found that the spectrum of fwYellow is too narrow. Due to the low precision of the instrument, it is impossible to accurately measure its excitation light and emission light. The excitation light is around 522 nm and the emission is about 536 nm.