Part:BBa_K2328019
smURFP I + Linker A
Sequence and Features
- 10INCOMPATIBLE WITH RFC[10]Illegal EcoRI site found at 411
- 12INCOMPATIBLE WITH RFC[12]Illegal EcoRI site found at 411
- 21INCOMPATIBLE WITH RFC[21]Illegal EcoRI site found at 411
- 23INCOMPATIBLE WITH RFC[23]Illegal EcoRI site found at 411
- 25INCOMPATIBLE WITH RFC[25]Illegal EcoRI site found at 411
Illegal AgeI site found at 279 - 1000COMPATIBLE WITH RFC[1000]
Usage
smURFP (small ultra-red FP) is an important part in our group. It is desirable for our in-vivo imaging because with it molecule less light is scattered, absorbed, or re-emitted by endogenous biomolecules compared with cyan, green, yellow and orange FPs. smURFP can covalently attaches a biliverdin(BV) chromophore without a lyase, and has 642/670 nm excitation - emission peaks, a large extinction coefficient and quantum yield, and photostability comparable to that of eGFP.
Biology
In order to fluoresce, smURFP must be combined with biliverdin (BV) .We have two solutions to make in-vivo imaging come true. The first one is co-expression system and the other one is surface display system. To construct the co-expression system, the gene of fluorescent protein---smURFP and the gene of the precursor of biliverdin---HO-1 should be connected to the same expression vector and then transferred to our target bacteria. The precursor of biliverdin will be transferred to biliverdin through a series of conversion, and then fluorescent protein will combine with biliverdin directly in our target bacteria and glow in the bacteria. To construct the surface display system, the gene of fluorescent protein---smURFP and the gene of the anchoring protein should be connected to the same expression vector. After the recombinant plasmid is transferred to the target bacteria, the fluorescent protein and anchoring protein will express at the same time and become fusion protein, and then the fluorescent protein will be carried to the cell surface by anchoring protein. With the added biliverdin, fluorescent protein will combine with biliverdin and glow on the cell surface. Linker A is used to separate smURFP from other core parts.
Reference
[1] Rodriguez EA,Tran GN , Gross LA, et al. A far-red fluorescent protein evolved from a cyanobacterial phycobiliprotein .[J].NATURE METHODS,2016:763-769.
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